The Application of FPC Flexible Circuit Board Covers Many Fields, and Its Application Prospect Is Ve

Application of FPC flexible circuit board

FPC flexible circuit board accounts for a large proportion in smart phones, which can meet the needs of mobile phone screen, battery and camera module. The emergence of multi-functional modules of smart phones in the 5g era, RF modules, folding screens and miniaturized models are inseparable from the connection of FPC flexible circuit boards. Therefore, in the process of the development of smart phones, the consumption of FPC flexible circuit boards is also increasing.

With the development trend of miniaturization of intelligent terminals, FPC flexible circuit board has the characteristics of portability and flexibility, which makes it account for more and more weight in the manufacturing of intelligent wearable devices. FPC flexible circuit board, as one of the main materials of intelligent wearable devices, has a broad market development space. It is expected to continue to rise in the future and become the beneficiary of the development of intelligent wearable devices.

In addition to consumer electronic products, the application of FPC flexible circuit board also covers many fields such as automobile, medical treatment, industrial control and so on.

FPC flexible circuit board is favored by people because of its lightweight, foldable, small spacing, multi pins, small volume, high integration and multi contacts. Therefore, professional connection test fixture should be selected in FPC test, otherwise there may be low test yield, broken pin and pin jamming. The high current shrapnel micro pin module (bladepin) developed by kaizhitong is used as the connection test module, It plays a good conduction role in FPC flexible circuit board test, and has obvious advantages in small pitch field and test service life:

The desirable value of high current shrapnel microneedle module in the field of small pitch is 0.15mm-0.4mm, which has strong adaptability. There will be no pin jamming and pin breakage in the middle of connection, and it has good performance in FPC connector test.

When the test needs to pass high current, the high current shrapnel microneedle module has stable current transmission in the range of 1-50a, no current attenuation and reliable connection.

The average service life of high current shrapnel microneedle module is 20W times, which can well meet the needs of high-frequency testing without frequent replacement, which not only saves time and material resources, but also improves the testing efficiency.

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Dalian Pinjia Group Promotes Infineon Intelligent Vehicle Motor Drive and Motor Control Solutions
On February 18, 2016, Dalian United holdings, a leading distributor of semiconductor components committed to the Asia Pacific market, announced that its Pinjia launched an on-board intelligent motor drive and control solution based on Infineon drive chips tle986x and tle987x.With the development of automotive electronics, intelligent motor is more and more widely used in automotive electronic system, and its advantages are very obvious. At present, there are an average of 28 motors per vehicle, which is expected to rise to 30 in two years. The motor is inseparable from the drive and control device. Infineon intelligent vehicle motor driver chip has been developed to the third generation tle986x and tle987x, which can cover DC motor and DC brushless motor.Figure 1 - photo of Infineon tle987x drive and control solution development board represented by Dalian PinjiaThe series chips of Infineon launched by Dalian Pinjia this time are integrated with cortex â„¢- M3 core MCU, NMOS driver (with chargpump), PWM / Lin transceiver and 10bit ADC current sampling; Wide range of working voltage, vs = 5.4v to 28V, suitable for automotive 12V system.Figure 2 - system framework diagram of Infineon tle986x and tle987x drive and control solutions of Dalian Pinjia agencyThe main devices in the drive and control solution launched by Dalian Pinjia include tle9877qxa40, tle9867qxa40 and ipd25n06s4l-30. Its product applications are HVAC, waterpump, FUELPUMP, window lift, BLDC motor and DC motor. It can provide technical support such as specifications, development platforms, development tools, schematic diagrams, demo boards, software routines, etc.Figure 3 - photos of Infineon tle986x and tle987x drive and control solutions represented by Dalian PinjiaAbout general United Holdings:As the world's largest distributor of semiconductor components and parts with a leading market share in the Asia Pacific region, Dagu holdings is headquartered in Taipei (TSE: 3702). It has Shiping, Pinjia, Quanding and Youshang, with nearly 6000 employees, more than 250 agent product suppliers, more than 120 distribution sites around the world (about 70 in the Asia Pacific region), with a turnover of US $14.9 billion (self settled) in 2014. (* market ranking based on Gartner data)Da Lianda holdings creates an industrial holding platform, continuously optimizes the front-end marketing and logistics support team, acts as a professional partner in the industrial supply chain, and provides value-added services such as demand creation, turnkey solution, technical support, warehousing logistics and IC e-commerce to meet the needs of original equipment manufacturers (OEMs) and original design manufacturers (ODMs) , electronic manufacturing service providers (EMS) and small and medium-sized enterprises. With international business scale and localized sales channels, it has been deeply rooted in the Asia Pacific market for a long time, and has been selected as the "best IC distributor in Asia" by professional media for many years.In order to improve the localization service quality of the general assembly and meet the differentiated needs of regional customers in Greater China, the six service areas of the general assembly (China) include China based manufacturers, Taiwan based manufacturers, electronic manufacturing service, Japanese based manufacturers and Korean based manufacturers And Hong Kong based manufacturers. In addition to providing customers with the best turnkey solution, the general assembly has specially established a dedicated small batch service team (SQS) to meet customers' procurement needs of small batch devices. The general assembly has established the General Assembly commerce and trade, the General Assembly commerce and trade (Shenzhen) and the General Assembly Electronics (Hong Kong) in the mainland and Hong Kong respectively. Taking "industry first choice. Channel benchmark" as the corporate vision, the general assembly has fully implemented the core values of "team, integrity, professionalism and efficiency", and achieved mutual benefit and win-win results for suppliers, customers and shareholders with professional services.
How to Take a Dog on a Float Trip
Float trips can be fun for the entire family, including the dog. It's sure to be an experience nobody will forget. Preparation for the trip will require basic dog training skills and considering your furry friend's needs and safety. In no time, everyone--including the dog--will be floating down the river having the time of their lives.InstructionsDifficulty: Moderately Easy Find out what is required to bring your dog on the float trip, if renting from a local outfitter. The outfitter may have particular requirements you'll need to meet before it will allow the dog on the river.Train your dog basic commands such as heel, stay, sit and to come when you call it. It's imperative you be able to control your dog while journeying on the river for its safety. You don't want the dog jumping into the water and drowning, getting lost or being attacked by another animal.Bring any safety gear that may be necessary for the dog. If the dog isn't a good swimmer, you might want to invest in a safety jacket for it. You should be able to find one at your local outdoor, pet supply store or online. Canine float jackets are relatively inexpensive. Make sure the dog is wearing a collar with I.D. tags, and bring a leash.Prepare a pet first aid kit to bring along on the journey. You'll want to include basic items such as gauze, bandages, first aid tape, an antiseptic, benadryl, aspirin and a sock. A sock pulled over a bandage will work quite well in keeping it in place. As in any outdoor trip where the dog is joining you, you'll want to be prepared in the event an accident occurs. Place all your first aid items in a waterproof container or plastic bag. If you'll be stopping and hiking in the woods, make sure your dog is wearing a flea and tick repellent.Pack supplies your dog may need such as food and water. If the trip will be overnight, you'll want to bring a blanket for the dog to stay warm at night. It might be a good idea to throw in an extra towel for the dog, even if the trip is only a day trip. Most of all have a safe and fun trip.ResourcesArticle Written By Joyce StarrJoyce Starr is a professional writer from Florida and owns a landscaping company and garden center. She has published articles about camping in Florida, lawn care and gardening and writes for a local gardening newsletter. She shares her love and knowledge of the outdoors and nature through her writing.
Will Iphone 5 Cover Case Be the Same As Iphone 4?
Who knows? There is even no announcement if the Iphone 5 will appear. If the dimensions of the Iphone 5 is exactly the same or is very close to the dimensions of the Iphone 4, only then will the case of the Iphone 5 fit the Iphone 41. Best iPhone to buy in 2021: Which top Apple phone should you buy?The Best iPhones to buy in 2021: Apple has a phone for every need! In the market for a new iPhone? The good news is Apple has a myriad of options, from the newest and most cutting-edge 5G, 5nm handsets to older devices that are still highly capable thanks to Apple's best-in-industry software updates. No matter your budget or need, there's bound to be an iPhone for you - after all, the iPhone is the most mainstream "default" phone. If you are looking for other options, we have recommendations on the best Android phones, and a combined recommendation list for the best phones. Best iPhone for most people: iPhone 12 Best iPhone for power users who do not like big screens: iPhone 12 Pro Best affordable iPhone for most people: iPhone 11 Best iPhone for most people: iPhone 12 The iPhone 12 is the iPhone to get for most people because it still offers the best Apple has to offer in crucial areas: that 5nm A14 Bionic SoC; the 6.1-inch OLED display; a very capable main and ultra-wide camera; and iOS 14. It lacks the telephoto zoom lens and stainless steel frame of Pro iPhones, but these are extra bells and whistles that the average joe would likely be glad to sacrifice to save $200. It's a great package overall, and many of us at XDA skipped over the Pro and Pro Max models to get the base iPhone 12 just because it did just about everything and was a better value for money phone in the 2020 lineup. There are plenty of large Android phones with a 6.7-inch screen, but the iPhone 12 Pro Max's 6.7-inches feels even bigger thanks to Apple's usage of a wider aspect ratio (19.5:9) and a completely flat display and body that does not taper off at the sides. The cameras here also gets several upgrades over other iPhone 12 models, including a larger image sensor for the main camera (47% larger than the iPhone 12 Pro's sensor), a longer telephoto zoom lens (65mm to the 52mm of the 12 Pro's); and a superior optical image stabilization system. Truth be told, these hardware upgrades bring only slightly superior performance over the standard iPhone 12 Pro, but it's still better if you need the absolute best camera Apple has to offer. Some of us here at XDA actually find this model a bit hard to use with one hand, but if you have large hands or do not mind using a second hand more often, because you want the largest most capable iPhone possible, then the iPhone 12 Pro Max is the one to get. Best iPhone for power users who do not like big screens: iPhone 12 Pro As we said, the iPhone 12 Pro Max technically has a slightly more capable camera than the standard iPhone 12, but the differences in photo/video quality are negligible in most cases. So that makes the iPhone 12 Pro still very close to the best hardware Apple has to offer, but it comes in a more manageable package. The 6.1-inch screen here is in our opinion the goldilocks size - it should be an easy hold for just about any adult or teen. You still get a very capable triple camera system, stainless steel sides, and all the other bits enjoyed by "Pro" iPhone users like a telephoto zoom lens. Best affordable iPhone for most people: iPhone 11 If saving money is a priority, it's worth buying an older iPhone, and the iPhone 11 is one of the best value options around in the Apple ecosystem. It's only a generation old, so its 7nm A13 Bionic chip and dual camera system are still very capable in 2021, and you are still getting a modern iPhone design with minimal bezels and Face ID. The iPhone 11 also comes in livelier colors (like the yellow you see above) than the iPhone 12 series, so that's another bonus if you want your phone in bold colors. There are two good reasons to get the iPhone 12 Mini: you want a really small phone that you can use with one-hand with ease; or you want the newest iPhone 12 series at the lowest price possible. On both fronts, Apple delivers. The iPhone 12 Mini is not just small, but downright petite. Most people should be able to palm the entire device and reach all four corners of the screen with their thumb easily. At $699, it's also the cheapest new iPhone in years. Do not be fooled by its dainty build, however. The iPhone 12 Mini still packs the same punch as the iPhone 12, so you are still getting a 5nm best-in-class SoC, and very good main and ultra-wide cameras. If you want the absolute cheapest iPhone possible (that's not used or several years old), the 2020 edition of the iPhone SE is the only sub-$400 iPhone around. It may lack the flashier all-screen design of the other iPhones listed here, but it comes in a petite size, and in this age of constant mask-wearing, having Touch ID instead of Face ID may actually be appealing to consumers. With this model you are still getting the 7nm Apple A13 Bionic, IP67 water-and dust-resistance (rare for a sub-$500 phone), and a good single camera with OIS. Released in 2017, the iPhone 8 is the oldest iPhone we can still recommend in 2021. It's just old enough that it has a price firmly in the budget territory, but not so old that performance will be frustratingly slow (which would be the case for an iPhone 6 or 7 in 2021). The Apple A11 Bionic used here is still decently powerful in 2021, and Apple's software optimization helps keep the phone running zippily. The iPhone 8 is also the last mainline iPhone to use the iconic circular home button, so this has some nostalgic value for iPhone fans or collectors too. No matter which iPhone you choose, you will be well served Even though we here at XDA have a soft spot for Android and all the customization the platform brings, we can concede that when it comes to providing software updates in a timely and long-term manner, Apple does a much better job with the iPhone. With the exception of the iPhone 8, every iPhone we listed here will be guaranteed to get iOS updates for at least four to five years, if not more. And of course, we are only in the first half of 2021; more iPhones will come this year, including the iPhone 13, and we will update this list accordingly - so check back often for the most up-to-date advice on which iPhone to get.2. What is better the iPhone 4 or the iPhone 5?iPhone 5 is better. Only reason is because it's faster, lighter, bigger screen, and a bit louder. There's not much difference though. I will stick with my 4S.3. Do Canadians prefer blackberry over iPhone and android devices because of being a Canadian brand and why?I think blackberry essentially worked for most because it had a keyboard. Going into an all touch system while android, and iphone are present is a bad idea. That's like the amazon fire OS, it's not going to work. They need to go back to the keyboard, and let those who want a keyboard use one. If RIM were going to die, they would be dead already. You can thank pakistan for that
Is My Proof Correct?(Proving Convergence of the $sum F'(n)$ )
You have to be careful because you cannot necessarily integrate $f'$.You had the right idea though. Here is how I would do to make it rigorous:Let $n geq 1$. $f$ is continuous on $n-1,n$ and differentiable on $n-1,n$ so by mean value theorem there exists $C_n in n-1,n$ such that $f(n) - f(n-1) f'(C_n)$. Therefore, since $f'$ is decreasing, we have$$f'(n) leq f'(C_n) f(n) - f(n-1).$$As a result, for all $N$,$$sum_n1^N f'(n) leq sum_n1^N f(n) - f(n-1) f(N) - f(0).$$Since $f$ is bounded, there exists $M$ such that $forall x in 0,infty,f(x) leq M$.Therefore$$sum_n1^N f'(n) leq M - f(0).$$Since all $f'(n)$ are positive and the partial sums of the series are bounded, the series $sum_n1^infty f'(n)$ converges by monotone convergence.$Q)$ Let differentiable $f : [0,infty) to mathbbR $ satisfying the conditions.$(1)$ $f'$ is decreasing on $[0,infty)$ and $f'(x) >0$,$ forall x in [0,infty)$$(2)$ $f $ is a bounded on $[0,infty)$Show $sum_n1^infty f'(n)$ is convergent. (Hint : $sum_n1^infty f(n1) - f(n)$)Though my book suggested the solution, But I tried different way. Here is the my trial.By Mean value thm, $exists C_n in (n,n1)$ $s.t.$ $f'(C_n) f(n1) - f(n)$Plus by the condition $(1)$, $f'(n)> f'(C_n) > f'(n1)$Then, $sum_n1^infty f'(n) f'(1)sum_n2^infty f'(n) 0)$ is decreasing to $0 $We can conclude $ sum_n1^infty f'(C_n) limlimits_n to infty int_2^n f'(x) dx limlimits_n to infty f(n)-f(2) 0$,$ forall x in [0,infty)$$(2)$ $f $ is a bounded on $[0,infty)$Show $sum_n1^infty f'(n)$ is convergent. (Hint : $sum_n1^infty f(n1) - f(n)$)Though my book suggested the solution, But I tried different way. Here is the my trial.By Mean value thm, $exists C_n in (n,n1)$ $s.t.$ $f'(C_n) f(n1) - f(n)$Plus by the condition $(1)$, $f'(n)> f'(C_n) > f'(n1)$Then, $sum_n1^infty f'(n) f'(1)sum_n2^infty f'(n) 0)$ is decreasing to $0 $We can conclude $ sum_n1^infty f'(C_n) limlimits_n to infty int_2^n f'(x) dx limlimits_n to infty f(n)-f(2)
Which Is Better Living on Post (schofield Barracks,HI) Or Off Post?
We were stationed there 1994-1998 and we first moved to Mililani. We had our house broken in only 20 minutes that my husband came to get me at work. This was at 5 PM. We were coming upon the time to renew our lease and decided to move on post at Wheeler's Army housing. This is between Mililani and Schofield. You have to leave your windows open because they do not put air conditioning in most home there. We lived in an almost new home in Mililani and it did not have air in it. The home intruders took 5 slats of glass out of the louver windows and came in and cleaned us out. They took all my valuable jewelry, VCRs, TV and our video camera. We must have come up on them still there because we found one of my diamond rings at the window where they escaped. If I were you all I would attempt to get post housing unless you find an up stairs apartment where it would be harder to get into your place. Even still they may have that figured out also. Also be careful if you go to the North Shore beach with a rental car. They will break into your car and clean you out. They watch for tourist to leave their car and know most people stay awhile at the beach. We had our own car broken into at a lookout. We just pulled off the side of the road and walked a short distant and the wind was blowing so cold that we headed back to the car and came up on two guys popping the lock out of our car door. They took off and we followed them but we lost them. Got their tag number and turned it into the police and never heard a thing from them. They look inside cars and see things like cell phones, cameras and purses. We were put on a waitng list for post housing when we got there. They did not have post housing when we got there but I have heard they have built a lot more. Good luck and if you any questions write me.1. Why always one post missingIt might be status issue. Try with:2. What is the difference between post and poste?Post on its own is a preposition, not an adverb, meaning that it describes a relationship between two entities (usually nouns or phrases). Poste is an adverb that modifies a verb. Examples:3. Medical school/ major/ post bacc?Step One is to try to improve your science grades. Yes, you can major in anything, but you need to have a solid grip on general and organic chemistry, general biology, and general physics. When you feel well prepared in those areas, try the American Association of Medical Colleges' "self-assessment" tests that simulate the MCAT exam. It costs money to get the self-assessment, so do not think about it until you believe you've mastered the subjects named above. Your MCAT scores can compensate to some degree for poor grades in the actual courses, but in the end, you must learn the material. The better schools also require a year of calculus or statistics and some credits in biochemistry, even if the MCATs do not address this material directly. It might be worth switching back to political science if that will get you out of undergraduate school sooner, and with a better record; but your conquest of basic sciences is the top priority. In addition to DO schools, you can consider offshore medical schools, e.g., in the Caribbean. So long as you can pass the US Medical Licensing Examination after your return, the fact of having attended a foreign medical school will not keep you out.4. Whats the best post to be stationed at?Your BAH is based on the cost of living of your current station, not your home5. Jimmy Johnson post race interview?Does not matter if there teammates, JJ will still race him hard the way he race Dale JR and J Gordon6. Query post with content onlyIf I understand your question fully, I believe this is what you are after.As far as I know... There is no WP_Query that you can use to accomplish this. However, you can use the $wpdb and make a custom query. Just replace the 'your_post_type' etc with your custom fields. Instead of p.post_content, you could also use pm.meta_value ' ' - this will retrieve only posts where the value of the meta field you've chosen is not empty.in which case, the Query would be:
Where Can You Buy Human Hair Tracks That Are Sewn in in an Extremely Bright Shade of Red?
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He is the author of Hair: A Human History, out now from Pegasus Books. The word "wig" is derived from the word "periwig," which is what the English thought they heard when the French introduced them to their word: "perruque." In the 17th and 18th centuries, "periwig" referred specifically to a wig worn by men, composed of white curled human or animal hair of variable length and style. Today, polite society most often softens references to wigs with such euphemisms as "hair covering" or "hairpiece," eschewing the historic terms "toupee" and "postiche." Since earliest times, humans have used hair-mimicking head covers for societal and political reasons. As recorded in ancient texts, sculptures and paintings, wig use was widespread in ancient Egypt, especially in the life of the royals and their court. It was common for both men and women of the higher classes to shave their heads and then wear full wigs made of human hair or date palm fibers. Not only did wigs decorate the top of the head, but they also embellished the pharaonic chin. Men, and occasionally women wore long, cylindrical chin wigs at court as a mark of authority; these chin-wigs varied in presentations from straight to elegantly-braided. Wig-wearing extended to the high societies of ancient Greece and Rome. So important were these wigs to social life that some noble Roman women kept blonde household slaves in order to assure an ample supply of flaxen hair for their own hairpieces. Wig use waned during the Middle Ages and did not return until 1624, when Louis XIII covered his prematurely balding scalp with a long, dark, wavy-locked hairpiece. Said to be the first wig in any royal court since ancient Egyptian times, the hairpiece kicked off a new fashion that persisted for almost 200 years, ending with the French Revolution when royal heads and wigs were separated from royal bodies. In that pre-revolutionary society, wigs broadcasted aristocracy and power. By the end of Louis XIII's reign in 1643, wigs were accepted as required dress for nobles all over Europe and, in order to supply those wigs, the first wig guild was founded in France in 1665. Wigs were popular in all social classes, though people at the top of the social scale wore the biggest. These massive wigs not only covered the head but also the back and shoulders. In the extreme, an attractive wig would have incorporated into it model ships, birdcages, and flags. These massive wigs were difficult to take care of, as their size prevented regular washing and the powder used to dust them-meant to add a pale patina and made of flour and starch-fed a whole host of bacteria residing on the sweaty scalp. The wig fashions of England in the 17th and 18th centuries paralleled those of the French court. One style, the macaroni, is particularly notable. In the 1760s, upper-class, young men who had taken the Grand Tour of Europe often returned home from Italy with a craving for macaroni pasta-a food new to the English of that time-and a novel hairstyle: a large white wig, very high in the front with a ribbon down the back. These dandies (essentially the predecessor to the metrosexual, with their fastidious eating, affected speech, and painstaking fashion choices) became known as "macaronis." Reference to this fashion appears in the "Yankee Doodle" song of American Revolutionary tradition where a fellow comes to town and all he need do is "put a feather in his cap" in order to become "macaroni." In modern times, wigs remain a booming business. The size of the industry is difficult to evaluate, since wig-making is a fragmented process and there are many participants-hair merchants, wholesalers, fiber manufacturers, wig designers, wig-knotters, and wig beauticians-but workers in the field estimate that the total world market approaches five billion dollars. And modern wigs are as varied as their costumers-whether created because of illness (to give the appearance of good health or to hide a hair disorder); religion (to cover hairstyles or baldness as obligated by tradition); social pressure (to comply with a style or convention); or theater (to look the part of a particular character). Most natural hair in the current market comes from South American and Asia. In Peru, hair merchants drive to villages, set up a tables in the central plaza, and buy hair from the women who line up-the vast majority of whom are very poor and reply upon these visits as a source of income. In India, women donate their hair as a votive offering to Venkateswara, an incarnation of Vishnu who has the power to absolve sins. It is estimated that a quarter of the 50,000 pilgrims who visit temples daily in the Andhra Pradesh region of India donate their hair. The temples then sell the hair-more than one ton per day- to merchants. This hair is the least expensive of the high-quality wig hair on the market today. Though many contemporary wigmakers tend to be uneasy about using synthetic hair in their wigs, there are some incredible advancements being developed for wig use. At Aderans Ltd., a billion-dollar Tokyo-based company that makes and sells wigs serving about 40 percent of the Japanese wig market, engineers are currently developing more realistic synthetic fibers. One new fiber is actually a fiber within a fiber; the internal layering imparts to it greater tensile strength. Another fiber has a roughened surface that acts like a cuticle, in that reflected light gives a more natural reflection. Still another fiber is able to intake water giving it some of the curling properties of natural hair. Such engineering advances suggest that synthetic fibers will increasingly become part of the future cosmetic wig. Futurists envision a new barbershop that will offer much more than our traditional barbering or salon experience; it will embrace the facilities of an all-round Cosmetic Center. It will be a one-stop, "holistic" beauty care community for men and women of all hair types, reminiscent of a food court with multiple stations in a large, easily-accessible area. There will be exercise and nutrition coaches alongside tattoo services, eye- and nail-care stations, hair removal stations (with support for both permanent and transient hair growth cessation), hair transplant stations with robot assistance-and, of course, computer-assisted wig weaving, fitting and repair. Wig production has evolved far beyond its ancient origins, but modern wig-wearers have much more in common with their counterparts from antiquity than meets the eye. The desire to achieve a particular cosmetic look binds Lady Gaga to the Egyptian pharaohs, even though they seem worlds apart. The wig manufacturing industry may be on the verge of even more radical changes, but their clientele wants the same thing from the product.2. 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(my extensions are dark brown & human hair)?you need bleach. ive done it before and leave the bleach on for up to an hour depending on how blonde you want it. they might turn out kind of orangey though so i would recommend getting platinum blonde extensions and use black hair dye to make the coon tails.
Desmodromic Valve - Wikipedia
Desmodromic valve - WikipediaBefore the days when valve drive dynamics could be analyzed by computer, desmodromic drive seemed to offer solutions for problems that were worsening with increasing engine speed. With proper analysis, problems relating to valve adjustment, hydraulic tappets, push rods, rocker arms, and above all, valve float, became things of the past without desmodromic drive.— — — — — —Can't find the gas shutoff valve for my dryer....?Best to call the gas co. There must be a valve outside, but it probably shuts everybodys gas off. I think you have to have a valve installed and they should have people to do it— — — — — —Rotary valve - WikipediaA rotary valve is a type of valve in which the rotation of a passage or passages in a transverse plug regulates the flow of liquid or gas through the attached pipes. The common stopcock is the simplest form of rotary valve. Rotary valves have been applied in numerous applications, including: • Controlling the steam and exhaust ports of steam engines, most notably in the Corliss steam engine. • Periodically reversing the flow of air and fuel across the open hearth furnace. • Certain types of two-stroke and four-stroke engines.— — — — — —1991 Honda civic sedan?If a valve was bent it would not "run fine"— — — — — —Variable Valve ControlVVC (Variable Valve Control) is an automobile variable valve timing technology developed by Rover and applied to some high performance variants of the company's K Series 1800cc engine— — — — — —Single compressor-individual expansion valveA two evaporator single compressor with individual expansion valves for each evaporator after passing through the back pressure valve enters into the compressors and hence there is a significant rise in temperature is observed. This system helps in dropping the pressure from high pressure evaporators with the help of back pressure valves. The high pressure ratio is obtained which necessarily compresses the vapor to high extent from the higher temperature evaporators to condenser temperature. This kind of refrigerator has greater application in load varying purpose. Moreover, high value of COP and better operating economy is observed. Mass flow rate through evaporators :- m1=Heat through evaporator 1(Q1)(specific enthalpy difference in evaporator 1) m2=Heat through evaporator 1(Q2)(specific enthalpy difference in evaporator 2)) The net work done is :- W = (Sum of masses through evaporator 1 and evaporator 2)*(specific enthalpy difference in compressor) W = (m1m2)*(h2-h1)— — — — — —Valve gearThere are many variations in the location of the valve gear. In British practice, inside valve gear is usually of the Stephenson type while outside valve gear is usually of the Walschaerts type. However, this is not a rigid rule and most types of valve gear are capable of being used either inside or outside. Joy valve gear was once popular, e.g. on the LNWR G Class. Inside cylindersOn inside-cylinder engines the valve gear is nearly always inside (between the frames), e.g. LMS Fowler Class 3F. Outside cylindersOn engines with outside cylinders there are three possible variations: Inside valve gear driving inside valves, e.g. NER Class T2 Inside valve gear driving outside valves through rocking shafts, e.g. GWR 4900 Class Outside valve gear driving outside valves, e.g. LSWR N15 ClassThree cylindersThere are three common variations: Three sets of valve gear (two outside, one inside), e.g. LNER Peppercorn Class A2 Outside valve gear driving the outside valves. Inside valve driven by Gresley conjugated valve gear, e.g. LNER Class A1/A3 Three sets of inside valve gear (all valves inside), e.g. NER Class T3Four cylindersThere are three common variations: Four sets of valve gear (two outside, two inside), e.g. SR Lord Nelson Class Inside valve gear driving the inside valves directly and the outside valves via rocking shafts, e.g. GWR 4073 Class Outside valve gear driving the outside valves directly and the inside valves via rocking shafts, e.g. LMS Princess Coronation Class— — — — — —Types of artificial heart valveThe three main types of artificial heart valves are mechanical, biological (bioprosthetic/tissue), and tissue-engineered valves. In the US, UK and the European Union, the most common type of artificial heart valve is the bioprosthetic valve. Mechanical valves are more commonly used in Asia and Latin America. Companies that manufacture heart valves include Edwards Lifesciences, Medtronic, Abbott (St. Jude Medical), LivaNova, CryoLife, and LifeNet Health. Mechanical valvesTypes of mechanical valvesMechanical valves come in three main types - caged ball, tilting-disc and bileaflet - with various modifications on these designs. Caged ball valves are no longer implanted, but many patients are still living with this type of valve. Bileaflet valves are the most common type of mechanical valve implanted in patients today. Caged ball valvesThe first artificial heart valve was the caged ball valve, a type of ball check valve, in which a ball is housed inside a cage. When the heart contracts and the blood pressure in the chamber of the heart exceeds the pressure on the outside of the chamber, the ball is pushed against the cage and allows blood to flow. When the heart finishes contracting, the pressure inside the chamber drops and the ball moves back against the base of the valve forming a seal. In 1952, Charles A. Hufnagel implanted caged ball heart valves into ten patients (six of whom survived the operation), marking the first long-term success in prosthetic heart valves. A similar valve was invented by Miles 'Lowell' Edwards and Albert Starr in 1960 (commonly referred to as the Starr-Edwards silastic ball valve). This consisted of a silicone ball enclosed in a methyl metacrylate cage welded to a ring. The Starr-Edwards valve was first implanted in a human on August 25, 1960, but was discontinued by Edwards Lifesciences in 2007. Caged ball valves are strongly associated with blood clot formation, so patients who have one required a high degree of anticoagulation, usually with a target INR of 3.0-4.5. Tilting-disc valvesIntroduced in 1969, the first clinically available tilting-disc valve was the Bjork-Shiley valve. Tiltingdisc valves, a type of swing check valve, are made of a metal ring covered by an ePTFE fabric. The metal ring holds, by means of two metal supports, a disc that opens when the heart beats to let blood flow through, then closes again to prevent blood flowing backwards. The disc is usually made of an extremely hard carbon material (pyrolytic carbon), enabling the valve to function for years without wearing out. Bileaflet valvesIntroduced in 1979, bileaflet valves are made of two semicircular leaflets that revolve around struts attached to the valve housing. With a larger opening than caged ball or tilting-disc valves, they carry a lower risk of blood clots. They are, however, vulnerable to blood backflow. Advantages of mechanical valvesThe major advantage of mechanical valves over bioprosthetic valves is their greater durability. Made from metal and/or pyrolytic carbon, they can last 20-30 years. Disadvantages of mechanical valvesBlood damageOne of the major drawbacks of mechanical heart valves is that they are associated with an increased risk of blood clots. Clots formed by red blood cell and platelet damage can block blood vessels leading to serious consequences. People with mechanical valves need to take anticoagulants (blood thinners), such as warfarin, for the rest of their life. Mechanical heart valves can also cause mechanical hemolytic anemia, a condition where the red blood cells are damaged as they pass through the valve. NoiseSome patients with mechanical valves can hear clicks as their valve closes, which some find disturbing. CavitationCavitation is the rapid formation of vaporous microbubbles in a fluid due to a local drop of pressure below the vaporization pressure at a given temperature. Cavitation in the blood can lead to mechanical heart valve failure, so cavitation testing is an essential part of the valve design verification process. Fluid mechanicsMany of the complications associated with mechanical heart valves can be explained through fluid mechanics. For example, blood clot formation is a side effect of high shear stresses created by the design of the valves. From an engineering perspective, an ideal heart valve would produce minimal pressure drops, have small regurgitation volumes, minimize turbulence, reduce prevalence of high stresses, and not create flow separations in the vicinity of the valve. Bioprosthetic (tissue) valvesBioprosthetic valves are usually made from animal tissue (heterograft/xenograft) mounted on a metal or polymer support. Bovine (cow) tissue is most commonly used, but some are made from porcine (pig) tissue. The tissue is treated to prevent rejection and calcification (where calcium builds up on the replacement valve and stops it working properly). Occasionally, alternatives to animal tissue valves are used: aortic homografts and pulmonary autografts. An aortic homograft is an aortic valve from a human donor, retrieved either after their death or from their heart if they are undergoing a heart transplant. A pulmonary autograft, also known as the Ross procedure is where the aortic valve is removed and replaced with the patient's own pulmonary valve (the valve between the right ventricle and the pulmonary artery). A pulmonary homograft (a pulmonary valve taken from a cadaver) is then used to replace the patient's own pulmonary valve. This procedure was first performed in 1967 and is used primarily in children, as it allows the patient's own pulmonary valve (now in the aortic position) to grow with the child. Advantages of bioprosthetic heart valvesBioprosthetic valves are less likely than mechanical valves to cause blood clots, so do not require lifelong anticoagulation. As a result, people with bioprosthetic valves have a lower risk of bleeding that those with mechanical valves. Disadvantages of bioprosthetic heart valvesTissue valves are less durable than mechanical valves, typically lasting 10-20 years. This means that people with bioprosthetic valves have a higher risk of requiring another aortic valve replacement in their lifetime. Bioprosthetic valves tend to deteriorate more quickly in younger patients. Recently, scientists have developed a new advanced tissue preservation technology, with the aim of improving the durability of bioprosthetic valves. In sheep and rabbit studies, tissue preserved using this new technology (called RESILIA tissue) had less calcification than control tissue. A valve containing this tissue is now marketed, but long-term durability data in patients are not yet available. Tissue-engineered valvesFor over 30 years researchers have been trying to grow heart valves in vitro. These tissueengineered valves involve seeding human cells on to a scaffold. The two main types of scaffold are natural scaffolds, such as decellularized tissue, or scaffolds made from degradable polymers. The scaffold acts as an extracellular matrix, guiding tissue growth into the correct 3D structure of the heart valve. Some tissue-engineered heart valves have been tested in clinical trials, but none are commercially available.
Power Management Solution for 5g Base Station Component Power Supply
Since the introduction of analog cellular network in the early 1980s, cellular communication has gone a long way. Today, with the market moving from 4G to 5g network solutions, the cellular communication industry is laying the foundation for a great leap in data transmission speed, lower latency, capacity, user density and reliability. For example, with the 100 times improvement of data rate and network capacity (10 times), 5g also significantly reduces the delay of less than 1 millisecond, and provides ubiquitous connectivity for billions of connected devices. It is part of the continuous development of the Internet of things (IOT). Figure 1 shows a typical 5g beamforming transmitter, including digital MIMO, data converter, signal processing component, amplifier and antenna.Power FPGAIn order to give full play to the advantages of 5g, designers need higher frequency radios, new spectrum faster data converters required to meet future data capacity requirements by using more integrated microwave / millimeter wave transceivers, field programmable gate arrays (FPGA), and high-power, low-noise power amplifiers (PA) for small batteries. In addition, these 5g units will include more integrated antennas for reliable connection using large-scale multiple input multiple output (MIMO) technology. Therefore, various state-of-the-art power supplies are required to power 5g base station components.Modern FPGAs and processors are manufactured using advanced nano processes because they usually perform calculations quickly and use low voltages ( 90%), power density, low noise performance and control required by these 5g power amplifiers.Facing the great pressure of the next generation (5g) products, its performance is better than that of the previous generation (4G), so there is almost no room for compromise. Therefore, ADI focuses on all aspects of the base station RF chain and has a comprehensive knowledge of the power management tools required to power these applications, which can provide appropriate power for today's 5g based power amplifiers and transceivers. Provide the industry's broadest range of high-performance power by linear ™ The product portfolio includes high efficiency, high density DC-DC converter module, power management IC (PMIC) and ultra-low noise linear regulator, including power sequencing, monitoring and protection. ADI can provide a more comprehensive method for 5g signal chain.ADI μ Module regulator and mute switcher services are complete power system level packaged solutions that can provide accurate voltage. The micro package has the highest efficiency (> 95%) and power density, high reliability and minimum EMI and noise. These solutions are designed for high-performance RF systems with the highest power conversion efficiency and density without adding noise or interference to radio signals of interest, thereby ensuring the best performance of these RF PAS and other such RF circuits.Similarly, in order to solve the challenge of power sequencing in circuits requiring multiple power rails, ADI has established a series of sequencers from two power supplies (adm6819 / adm6820) to 17 channels (adm1266). In order to ensure the correct, efficient and safe operation of the system, it is very important to monitor the equipment voltage, current or temperature. For this purpose, ADI provides components similar to ltc2990.closeIn short, ADI's power by linear product series includes low-noise LDO regulator, low EMI and highly integrated multi coil DC-DC converter μ Module devices, mute switcher technology and other power management ICs, including power sequence generator, monitor and protection circuit - all of which make ADI the most extensive power product series in the industry. It includes everything needed to power 5g base station components, including software design and simulation tools such as ltpowercad and LTSpice. These tools simplify the task of selecting the appropriate power management solution for these devices, thus providing the best power solution for 5g base station components.
Curious Badge Bug [duplicate]
If you click on the badge in your profile it will tell you that you need a positive question record and that you do not currently have one.Excerpted from this answerA positive question record means you do not have too many closed, downvoted or deleted questions, overall. The formula is (total questions - negative questions - closed - deleted)/total questions >= 0. 5. Questions that have been downvoted and closed and deleted count three times in this calculation!You have at least one deleted question, although I can not see whether it's downvoted or not1. Constituent should be a bronze badgeI disagree. Take a look at the stats from the last community election on Stack Overflow:99,626 voters were eligible, 60,208 visited the site during the election, 19,479 visited the election page, and 4,426 votedSo out of 60,000 people who visited the site (and so presumably were aware of the election) only a third of them actually bothered to look at the election page at all, and only a twelfth of them actually cast any votes. If casting a vote in a moderator election were as easy as "clicking one button" then surely many more people would have voted. Right? I think you are underestimating the difficulty of voting in an election -- at least if you are doing it responsibly, and I think most of us probably are. When I cast my votes, I read every candidate's statement multiple times and read everything from the QA session. I also sought out individual posts by the candidates I was considering, both on SO and Meta. I took it quite seriously.I did not have to, of course, and there's no way for SO to police that behavior. But I think the above stats show that on the whole, community members are taking moderator elections seriously, and are not simply voting to earn a badge; otherwise, there would be a lot more people voting!2. Should I try to get a badge in Philosophy?Only a few days. It is based on the number of questions that you ask. You can have mine if you can figure out how to get it. I think that they are embarrassing. Love and blessings Don3. Naturalism and Red Badge of Courage?Naturalism is also called Romanticism. It is connecting man directly to nature. Among Transcendentalists' core beliefs was an ideal spiritual state that 'transcends' the physical and empirical and is only realized through the individual's intuition, rather than through the doctrines of established religions. Pax - C4. Which comments got me the Pundit badge?As said in the comments, there are SQL queries on data.SX for this, for instance:The data are cached so the votes appear there delayed. I am afraid it's not easily possible to get the up-to-date information instantly since caching is necessary to avoid server overloads.5. Critic badge awarded in error - possibly bug [duplicate]Actually, it's not a bug. The logs will show that you did cast a downvote. It will be something like this:So, in reality, you downvoted a post, and you deserve the badge. How soon after you cast the downvote you retracted the downvote does not matter. Even so, it's just a simple bronze badge that is meant to teach you about downvoting. Does it really matter if you have it when you do not really feel you deserve it? I am sure you will cast a downvote at some point in the future6. Shouldn't the Tumbleweed badge be either gold or burned?I've gotten one on a different board.The culture and relatively small size of WB makes this impossible. The badge definitions are global7. How can i get the Top Contributor badge?It is as far as we know awarded weekly and also removed weekly if you do not maintain the standard8. Police Officer Denies to Show you his Badge?I am police officer and I would ARREST you right on the spot for even asking such a question9. Why is there an alarm clock badge on the YouTube app?The icon is telling you why Siri is suggesting the app to you by placing it in the Dock. Siri's proactive abilities means it suggests apps it thinks you are likely to use for a variety of reasons:You can disable apps from being suggested on the Dock by going to Settings General Multitasking & Dock and disabling Show Suggested and Recent Apps
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