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1 primary switch mode power supply
- импульсный источник электропитания с коммутацией тока на первичной стороне
импульсный источник электропитания с коммутацией тока на первичной стороне
-In primary switch mode power supplies, the AC mains voltage is first rectified and smoothed and then chopped ("switched"). Chopping means that the DC voltage is switched periodically at a frequency of 40 to 200 kHz using a power transistor.
In contrast to linearly regulated power supplies, the power transistor does not act as a variable resistor but as a switch instead. This generates a square-wave AC voltage that is transformed to the secondary circuit using a high-frequency transformer. In the secondary circuit, the voltage is rectifi ed and smoothed. The quantity of energy transformed to the secondary circuit is controlled, depending on the load, by varying the chopping rate. The longer the transistor is conductive, the higher is the quantity of energy transformed to the secondary circuit ( pulse width modulation).
Due to the use of high-frequency AC voltage, primary switch mode power supplies have the decisive advantage that their transformer can be of much smaller size than required for the transformation of low frequencies. This reduces the weight and the dissipation inside the unit. The effi ciency of these units is between 85 and 95 %. Since the output voltage does not directly depend on the input voltage, these units can be used for a wide input voltage range and can even be supplied with DC voltage. Furthermore, it is possible to buffer short-time mains voltage breakdowns up to 200 ms. However, the power failure buffering time is limited by the size of capacitor C1 since a longer buffering time requires a higher capacity and thus a bigger size of the capacitor. Especially in case of small power supplies this is not desirable.
Therefore, a practicable compromise has to be made between the size of the power supply and the buffering time.
Primary switch mode power supplies can be used for all purposes. For example, they are suitable for the supply of all kind of electronics as well as for electromechanical applications.
[ABB]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > primary switch mode power supply
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2 loss
потеря; ухудшение; уменьшение; отсутствиеheight loss on recovery — потеря высоты за время вывода (напр. из штопора)
join-up loss of control — потеря управляемости при сборе самолётов [при подходе к строю]
loss of an engine — отказ [выход из строя, потеря тяги] двигателя
loss of artificial feel — отказ автомата [механизма] загрузки [усилий]
loss of electrical power — прекращение электропитания [электроснабжения, подачи электроэнергии]
loss of propulsive power — потеря тяги; потеря мощности, расходуемой на движение
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3 product
1) изделие; продукт2) продукция (напр. фирмы)3) продукт, результат ( деятельности или определённого процесса); произведение5) вчт максимальная нижняя грань двух элементов решётки•- product of sets
- product of sums
- product of tensors
- aliasing product
- application-specific standard product
- Banach product
- binomial product
- Boolean product
- Cartesian product
- class product
- convolution product
- cross-product
- delay-dissipation product
- direct product
- dot product
- dyadic product
- end product
- energy product
- filtered product
- finished product
- functional product - generalized product
- half-finished product
- Hermitian product
- homotopy product
- inner product
- innovation product
- intermodulation products
- Kronecker product
- lexicographic product
- logical product
- magnetic product
- magnetic energy product
- marketable products
- matrix product
- minor product
- mixed product
- modulation products
- modulo product
- off-the-shelf product
- outer product
- outer product of gradient
- permutation product
- power-delay product
- program product
- proprietary product
- RC product
- scalar product
- software product
- speech product
- split product
- spurious product
- symplectic product
- time-bandwidth product
- topological product
- triple scalar product
- triple vector product
- truncated product
- vector product
- waste products
- wedge product -
4 product
1) изделие; продукт2) продукция (напр. фирмы)3) продукт, результат ( деятельности или определённого процесса); произведение5) вчт. максимальная нижняя грань двух элементов решётки•- application-specific standard product
- Banach product
- binomial product
- Boolean product
- Cartesian product
- class product
- convolution product
- cross-product
- delay-dissipation product
- direct product
- dot product
- dyadic product
- end product
- energy product
- filtered product
- finished product
- functional product
- gain-bandwidth product
- GBW product
- generalized product
- half-finished product
- Hermitian product
- homotopy product
- inner product
- innovation product
- intermodulation products
- Kronecker product
- lexicographic product
- logical product
- magnetic energy product
- magnetic product
- marketable products
- matrix product
- minor product
- mixed product
- modulation products
- modulo product
- off-the-shelf product
- outer product of gradient
- outer product
- permutation product
- power-delay product
- product of relations
- product of sets
- product of sums
- product of tensors
- program product
- proprietary product
- RC product
- scalar product
- software product
- speech product
- split product
- spurious product
- symplectic product
- time-bandwidth product
- topological product
- triple scalar product
- triple vector product
- truncated product
- vector product
- waste products
- wedge productThe New English-Russian Dictionary of Radio-electronics > product
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5 resource
1) ресурс2) запас, резерв3) способ, средство4) возможность5) pl богатства, возможности, ресурсы•- non-metallic mineral resources - water resources - water-power resourcesdissipation of resources — распыление средств или ресурсов
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6 waste
1. n растрачивание, ненужная или излишняя трата; расточительство2. n потери, убыль; ущерб, убытокwaste of fuel — потеря топлива; перерасход топлива
3. n юр. повреждение, порча; небрежное отношение4. n отходы; обрезки, обрывки выжимки5. n концы, обтирочный материалwaste end — конец, отрезаемый в отходы
cotton waste — концы, обтирочный материал
6. n текст. угар; очёски; рваньthread waste — путанка, рвань пряжи
7. n металлический лом, скрап8. n полигр. макулатура; лишние листыpaper waste — бумажный брак; макулатура; отходы бумаги
9. n утильutility waste — утильсырье; утиль; отбросы
10. n мусор; отбросы11. n сточные воды12. n физиол. выделения13. n износ, изнашивание14. n потеря веса, исхудание15. n уменьшение; упадок16. n пустыня17. n пустынное пространствоa waste of waters — пустыня моря; морской простор
18. n пустошь, пустырь; бросовая земляwaste land — пустующий участок земли; пустошь
19. n юр. бесхозная земля20. n горн. пустая породаwaste pile — отвал породы, террикон
21. n геол. материал, уносимый потоком в мореlevel of waste removal — степень извлечения загрязняющих веществ; степень очистки сточных вод
22. a пустынный; незаселённый; невозделанный; непроизводительный, неплодородный; засушливый23. a опустошённыйto lay waste — опустошать, разорять
24. a излишний, ненужный; напрасный25. a негодный; бракованный26. a тех. отработанный27. v расточать, растрачивать, непроизводительно расходовать, напрасно тратить; терятьactor wasted on provincial audiences — актёр, загубивший свой талант в провинциальных театрах
run to waste — тратиться непроизводительно; тратиться попусту
28. v пропадать попусту; растрачиваться без пользы29. v упускать30. v опустошать; разорять; портить; разрушатьlay waste — опустошать; опустошить
31. v юр. портить арендованное имущество32. v истощаться, иссякать, приходить к концу33. v изнурять, истощатьframe wasted by disease — тело, истощённое болезнью
34. v чахнуть, умиратьto waste away, to pine away — чахнуть
35. v редк. идти, течь36. v амер. сл. избить до полусмерти37. v амер. сл. убить, уничтожить38. v амер. сл. спорт. терять в весе; сгонять весСинонимический ряд:1. barren (adj.) barren; desert; deserted; desolate; uninhabited; wild2. devastated (adj.) decayed; destroyed; devastated; ghost; laid waste; ravaged; ruined; sacked3. useless (adj.) extra; superfluous; unused; useless4. badland (noun) badland; barren; desert; wasteland; wild; wild land; wilderness; wildness5. devastation (noun) decay; decline; destruction; devastation; diminution; dissipation; loss; ruin; spoliation6. extravagance (noun) extravagance; extravagancy; lavishness; overdoing; prodigality; profligacy; squander; unthrift; wastefulness7. refuse (noun) debris; dreck; garbage; junk; kelter; litter; offal; outsweepings; refuse; riffraff; rubbish; spilth; sweepings; swill; trash8. blow (verb) blow; blunder; blunder away; cast away; consume; dissipate; dribble away; drivel; expend; fool away; fritter; fritter away; frivol away; misspend; muddle away; potter away; prodigalize; riot away; spend; squander; throw away; trifle away9. demolish (verb) demolish; destroy; devastate10. erode (verb) decay; diminish; dwindle; erode; reduce; wear away; wear down11. fail (verb) decline; deteriorate; fade; fail; flag; languish; wane; weaken; wither12. indulge (verb) indulge; lavish; splurge13. miss (verb) lose; miss14. ravage (verb) deflower; depredate; desecrate; desolate; despoil; devast; devour; harry; havoc; lay waste; pillage; plunder; ravage; ruin; sack; scourge; spoil; spoliate; stripАнтонимический ряд:abstain; acquire; augment; collect; conserve; develop; enrich; erect; establish; flourish; furnish; gain; get; preserve; thrift -
7 degeneration
1. n упадок, вырождение, дегенерация2. n ухудшение свойств3. n биол. вырождение4. n мед. перерождение5. n дегенеративностьСинонимический ряд:1. corruption (noun) corruption; depravation; dissipation; dissolution2. decline (noun) consumption; decay; decline; decrease; degradation; descent; ebb; failure; fall; regression; retrogression; worsening3. deterioration (noun) atrophy; decadence; declension; declination; degeneracy; degringolade; deterioration; devaluation; devolution; downfall; downgrade4. ruin (noun) decimation; destruction; devastation; disintegration; ruin; undoingАнтонимический ряд: -
8 squander
ˈskwɔndə
1. сущ. расточительство Syn: dissipation
2. гл. расточать, проматывать (on/upon) (тж. squander away) It doesn't take long to squander a fortune away if you're not careful. ≈ Если Вы будете вести себя так беспечно, то очень легко можете упустить удачу. Isn't it foolish to squander so much money on educating such a stupid boy? ≈ Разве стоит тратить так много денег на обучение такого глупого ребенка? расточительство, мотовство растрачивать, безрассудно тратить, проматывать (часто * away) - to * one's fortune проматывать состояние - to * away one's money in gambling швырять деньги на азартные игры - to * reserves разбазаривать запасы - to * (away) (one's) energy растрачивать /попусту тратить/ энергию - to * one's health (безрассудно) губить здоровье - to * time попусту тратить время( редкое) бродить, странствовать, скитаться рассеивать, рассыпать - to * a fleet рассеять флот - the islands lie *ed in the vast ocean эти острова разбросаны в безбрежном океане squander проматывать сбережения ~ расточать, проматывать;
to squander time тратить время зря ~ расточать, проматывать ~ расточительство ~ растрачивать сбережения ~ расточать, проматывать;
to squander time тратить время зряБольшой англо-русский и русско-английский словарь > squander
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9 heat
1) жар
2) жаровой
3) забег
4) каление
5) нагревать
6) накаливать
7) натапливать
8) натопить
9) обогревать
10) плавочный
11) подогрев
12) подогревать
13) тепло
14) тепловоспринимающий
15) тепловый
16) теплозащитный
17) теплообменный
18) теплота
19) тепловой
20) тепловая энергия
21) нагреваться
22) накаливаться
23) греть
24) калильный
25) жаровый
26) котел
27) накалить
28) теплоемкость
29) калория
– accumulation of heat
– available heat
– blow heat
– bring to red heat
– by-product heat
– cold heat
– convection heat
– cupola heat
– diverted heat
– evaporation heat
– external heat
– finishing off a heat
– generate heat
– heat abstraction
– heat ageing
– heat balance
– heat barrier
– heat blower
– heat capacity
– heat carrier
– heat chamber
– heat conducting
– heat conduction
– heat conductivity
– heat conductor
– heat consumer
– heat content
– heat demand
– heat detector
– heat differential
– heat dissipation
– heat emission
– heat energy
– heat engine
– heat engineering
– heat exchange
– heat exchanger
– heat exchanging
– heat filter
– heat finishing
– heat flow
– heat generation
– heat generator
– heat input
– heat insulation
– heat log
– heat model
– heat of combustion
– heat of formation
– heat of superheat
– heat of vaporization
– heat peeling
– heat pick-up
– heat pipe
– heat production
– heat productivity
– heat rate
– heat rating
– heat rays
– heat recovery
– heat regeneration
– heat removal
– heat removing
– heat requirement
– heat resistance
– heat run
– heat sample
– heat schedule
– heat shield
– heat shielding
– heat shock
– heat sink
– heat source
– heat sterilization
– heat storage
– heat stress
– heat supply
– heat supplying
– heat tapping
– heat test
– heat time
– heat transfer
– heat transmission
– heat transmitting
– heat transport
– heat treatment
– heat utilization
– heat waves
– internal heat
– Joulean heat
– latent heat
– liberate heat
– low heat value
– low-grade heat
– melting heat
– overblow heat
– pour heat
– progress of heat
– quantity of heat
– radiant heat
– radiogenic heat
– recover heat
– red heat
– residual heat
– resistance to heat
– sensible heat
– specific heat
– store heat
– surplus heat
– total heat
– utilize heat
– viscous heat
– waste heat
– waste-gas heat
– welding heat
– work the heat
ablation heat shield — <cosm.> экран тепловой эрозионный
counter-current heat exchanger — противоточный теплообменник
cross-flow heat exchanger — теплообменник с перекрестным током
float-head heat exchanger — теплообменник с плавающей головкой
heat exchange coefficient — <phys.> коэффициент теплообмена
heat transfer coefficient — <phys.> коэффициент теплоотдачи, коэффициент теплопередачи
intermediate heat exchanger — <engin.> теплообменник промежутночный
mechanical equivalent of heat — механический эквивалент тепла
U-tube heat exchanger — теплообменник с У-образными трубками
См. также в других словарях:
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