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121 цепь вторичной обмотки
Большой англо-русский и русско-английский словарь > цепь вторичной обмотки
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122 вторичная цепь
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123 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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124 ignition
зажигание; вспышка; загорание; восгорание; воспламенение; запал; прокаливание; озоление (фильтра)- ignition agent - ignition and lighting magneto - ignition angle - ignition apparatus - ignition battery - ignition by compression - ignition cable - ignition cam - ignition capacity of accumulator - ignition cell - ignition coil resistor - ignition control - ignition control unit - ignition control lever - ignition current - ignition cut-out - ignition desabler - ignition dope - ignition due to compression - ignition energy - ignition improver - ignition in dead centre - ignition interference - ignition interval - ignition irregularities - ignition key - ignition key release - ignition lag - ignition leads - ignition lever - ignition light - ignition-lighting generator - ignition limits - ignition line - ignition lock - ignition map - ignition mapping - ignition-miss detection - ignition noise - ignition-noise suppression - ignition pin - ignition plug - ignition point - ignition potential - ignition pressure - ignition primary circuit - ignition pulse - ignition quality - ignition range - ignition reserve - ignition resistor - ignition secondary circuit - ignition sense - ignition sequence - ignition shielding - ignition spark - ignition switch - ignition switch key - ignition system - ignition temperature - ignition terminals - ignition tester - ignition time - ignition timer - ignition timing - ignition timing adjustment - ignition timing lever - ignition timing notch - ignition transformer - ignition trouble - ignition tube - ignition-type self-starter - ignition unit - ignition voltage - ignition warning light - ignition wire - ignition wire assembly - ignition wire manifold - ignition wiring - ignition zone - adjust the ignition - inpact ignition - shock ignition - irregular ignition - jump-spark ignition - late ignition - low-tension ignition - magneto ignition - make-and-break ignition - multipoint ignition - poor ignition - premature ignition - retarding ignition - self-ignition - simple ignition - simultaneous ignition - single ignition - single-coil ignition - single-spark ignition - spark ignition - spark plug ignition - spontaneous ignition - submersion-proof ignition - turn on ignition - turn off ignition - twin ignition - twin spark ignition - two-independent ignition - two-point ignition -
125 switching boundary
boundary constraints — граничные связи, связи на контуре
English-Russian big polytechnic dictionary > switching boundary
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126 bus
1) автобус
2) автобусный
3) шинный
4) ошиновать
5) шина
– address bus
– articulated bus
– battery bus
– branch bus
– bus driver
– bus fleet
– bus insulator
– bus isolator
– bus reactor
– bus system
– bus terminal
– city bus
– collecting bus
– control bus
– data bus
– double-deck bus
– enclosed bus stop
– frameless bus
– gasoline-electric bus
– grounding bus
– mail bus
– main bus
– number bus
– on-board bus
– pulse bus
– rectangular bus
– reserve bus
– software bus
– station bus
– suburban bus
– talking bus
– wagon-body bus
number transfer bus — числовая шина, шина передачи чисел
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127 bus
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128 evaporator
1. испарительevaporator tube — парогенерирующая труба; трубка испарителя
2. выпарной аппаратsilver bath evaporator — установка для выпаривания отработанных фотографических растворов, содержащих серебро
См. также в других словарях:
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secondary circuit — antrinė grandinė statusas T sritis automatika atitikmenys: angl. secondary circuit vok. Sekundärkreis, m rus. вторичная цепь, f pranc. circuit secondaire, m … Automatikos terminų žodynas
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