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1 Voltage Controlled Resistor
Electronics: VCRУниверсальный русско-английский словарь > Voltage Controlled Resistor
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2 voltage-controlled resistor
Engineering: VCRУниверсальный русско-английский словарь > voltage-controlled resistor
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3 варистор
варистор
Сопротивление, величина которого значительно меняется в зависимости от приложенного напряжения
[МЭК 50 (151)-78]
варистор
Полупроводниковый резистор, основное свойство которого заключается в способности значительно изменять свое электрическое сопротивление при изменении подаваемого на него напряжения
[ ГОСТ 21414-75]
варистор
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[IEV number 151-13-23]EN
varistor
resistor the resistance of which is strongly varying with the applied voltage
[IEV number 151-13-23]FR
varistance, f
résistance dont la valeur varie fortement en fonction de la tension électrique appliquée
[IEV number 151-13-23]Тематики
- резисторы
- электротехника, основные понятия
EN
DE
FR
28. Варистор
D. Varistor
E. Varistor
F. Varistance
Полупроводниковый резистор, основное свойство которого заключается в способности значительно изменять свое электрическое сопротивление при изменении подаваемого на него напряжения
Источник: ГОСТ 21414-75: Резисторы. Термины и определения оригинал документа
Русско-английский словарь нормативно-технической терминологии > варистор
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4 варистор
voltage-controlled resistor, voltage-sensitive resistor, varistor -
5 варистор
voltage-controlled resistor, voltage-sensitive resistor, varistor -
6 варистор
1) Engineering: double-saturation diode, varistor, voltage-controlled resistor, voltage-dependent resistor, voltage-sensitive resistor2) Telecommunications: voltage-dependent resistance3) Electronics: voltage-depended resistor, voltage-variable resistor4) Information technology: variable resistor5) Makarov: variator -
7 резистор, управляемый напряжением
Engineering: voltage-controlled resistor, voltage-dependent resistorУниверсальный русско-английский словарь > резистор, управляемый напряжением
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8 варистор
double-saturation diode, voltage-controlled [voltage-dependent] resistor, voltage-sensitive resistor, varistor* * *вари́стор м.
varistor, variable resistorкарбидокре́мниевый вари́стор — silicon-carbide varistorмеднокупоро́сный вари́стор — copper-sulphate varistorобъё́мный вари́стор — bulk varistorполево́й вари́стор — field varistorселе́новый вари́стор — selenium varistorвари́стор с то́чечным конта́ктом — point-contact varistorтонкоплё́ночный вари́стор — thin-film varistor -
9 полное напряжение
1. мех. combined stress2. эл. total voltageнапряжение сети — mains voltage; supply-line voltage
напряжение сигнала выделяется на сопротивлении нагрузки RH — the signal voltage is developed across the load resistor RL
получать напряжение смещения за счёт протекания катодного тока через резистор — derive bias voltage by the passage of cathode current through a resistor
усиление по напряжению — voltage amplification; voltage gain
пусковое напряжение; отпирающее напряжение — trigger voltage
Русско-английский большой базовый словарь > полное напряжение
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10 напряжение
1. с. мех. stress2. с. эл. voltage, tensionстабилизировать напряжение — stabilize a voltage; regulate a voltage
напряжение анода — anode voltage; plate voltage; anode voltage
напряжение бортовой сети — airborne voltage; ships system voltage; авто car-system voltage
усиление по напряжению — voltage amplification; voltage gain
пусковое напряжение; отпирающее напряжение — trigger voltage
3. effortлегко, без напряжения — without effort
Синонимический ряд:усилие (сущ.) надсада; надсаду; натуга; натугу; усилие -
11 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
Русско-английский словарь нормативно-технической терминологии > импульсный источник электропитания с коммутацией тока на первичной стороне
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12 линейный регулируемый источник электропитания
линейный регулируемый источник электропитания
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Рис. ABBThe AC mains voltage is transformed to a lower level, rectified and smoothed by capacitor C1. Then, voltage regulation is performed, typically using a power transistor. The power transistor acts as a variable resistor, controlled to keep the output voltage constant.
The efficiency of linearly regulated power supplies is only approx. 50 % due to the high losses inside the power transistor. The remaining energy is emitted in the form of heat. Due to this, sufficient ventilation is required to cool the power supply. Compared with unregulated power supplies, linearly regulated power supplies have a very small residual ripple of the output voltage (in the dimension of millivolts).
Linearly regulated power supplies are used for all applications that require a very exact output voltage, e.g. for highly precise medical devices.
[ABB]Тематики
EN
Русско-английский словарь нормативно-технической терминологии > линейный регулируемый источник электропитания
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