SU586447A1

SU586447A1 - Parametric dc voltage stabilizer

Info

Publication number: SU586447A1
Application number: SU762401063A
Authority: SU
Inventors: Олег Игнатьевич Вылегжанин
Original assignee: Всесоюзный Научно-Исследовательский Институт Охраны Труда Вцспс
Priority date: 1976-09-03
Filing date: 1976-09-03
Publication date: 1977-12-30

Description

1one

Изобретение относитс к области электротехники и может быть использовано в качестве источника опорного напр жени в блоках питани различной радиоэлектронной аппаратуры .The invention relates to the field of electrical engineering and can be used as a source of reference voltage in power supply units of various electronic equipment.

Известны параметрические стабилизаторы посто нного напр жени 1, 2.The parametric constant voltage stabilizers 1, 2 are known.

Первое из известных устройств содержит основной стабилитрон, подключенный параллельно к выходным выводам и токостабилизирующий двухполюсник, состо щий из транзистора и стабилитрона, подключенного входом к входным выводам, а выходом к основному стабилитрону.The first of the known devices contains a main Zener diode connected in parallel to the output pins and a current-stabilizing two-pole device consisting of a transistor and a Zener diode connected by an input to the input pins and an output to the main Zener diode.

Второе из известных устройств, вл ющеес наиболее близким техническим решением к изобретению, содержит стабилитрон, подключенный параллельно выходным выводам, и основной полевой транзистор, сток которого подключен к первому входному выводу, а исток через резистор - к аноду стабилитрона. Недостатком этих устройств вл етс низкий коэффициент стабилизации.The second of the known devices, which is the closest technical solution to the invention, contains a zener diode connected in parallel to the output pins, and a main field effect transistor whose drain is connected to the first input pin and the source through a resistor to the zener diode anode. The disadvantage of these devices is the low stabilization factor.

Целью изобретени вл етс повышение коэффициента стабилизации. Эта цель достигаетс тем, что в параметрический стабилизатор посто нного напр жени введен дополнительный полевой транзистор с каналом противоположного типа, у которого затвор соединен с истоком основного полевого транзистора,The aim of the invention is to increase the stabilization factor. This goal is achieved by the fact that an additional field-effect transistor with a channel of the opposite type, in which the gate is connected to the source of the main field-effect transistor, is introduced into the parametric dc voltage regulator.

исток - с анодом стабилитрона, а сток - со вторым входным выводом через дополнительный резистор и непосредственно с затвором основного транзистора.the source is with the anode of the Zener diode, and the drain is with the second input terminal through an additional resistor and directly with the gate of the main transistor.

На чертеже изображена электрическа схема стабилизатора посто нного напр л ени .The drawing shows an electrical circuit of a constant voltage regulator.

Параметрический стабилизатор посто нного напр жени состоит из канальных полевых транзисторов 1 и 2, имеющих каналы разногоParametric DC voltage regulator consists of channel field-effect transistors 1 and 2, with channels of different

типа, кремниевого стабилитрона 3 и двух резисторов 4 и 5, Сток полевого транзистора 1 соединен с входным выводом, исток - с затвором полевого транзистора 2 и резистором 4, а затвор - со стоком полевого транзистора 2type, Zener diode 3 and two resistors 4 and 5, the drain of the field-effect transistor 1 is connected to the input terminal, the source is connected to the gate of the field-effect transistor 2 and the resistor 4, and the gate is connected to the drain of the field-effect transistor 2

и резистором 5. Второй конец резистора 4 и исток полевого транзистора 2 соединены с кремнием стабилитроном 3 и выходным выводом . Вторые концы резистора 5 и кремниевогоand a resistor 5. The second end of the resistor 4 and the source of the field-effect transistor 2 are connected to silicon by Zener diode 3 and the output terminal. The second ends of the resistor 5 and silicon

стабилитрона соединены с общей шиной. Дл обеспечени нормального режима работы полевых транзисторов 1 и 2 они выбираютс так, чтобы напр жение отсечки тока стока полевого транзистора 1 было велико, а полевогоzener diode connected to a common bus. To ensure the normal operation of field-effect transistors 1 and 2, they are chosen so that the cut-off voltage of the drain current of the field-effect transistor 1 is large and the field voltage

транзистора 2 - мало.transistor 2 is small.

Стабилизатор посто нного напр жени работает следующим образом.The constant voltage stabilizer operates as follows.

При подаче напр жени на входные выводы кремниевый стабилизатор пробиваетс и поWhen voltage is applied to the input pins, the silicon stabilizer is punched and

Claims

Circuits: community, silicon Zener diode 3, resistor 4, the source of the drain of the field-effect transistor 1-current flows. The current also flows through the circuit: common bus, drain-source section of field-effect transistor 2, resistor 4, source-drain section of field-effect transistor 1. The voltage on resistor 4 sets the operating mode of the field-effect transistor 2. Voltage on resistor 5 and voltage on zener diode 3 and resistor 4 are turned on and form an offset for the field-effect transistor 1. As the input voltage changes, for example, as it increases, the current through the silicon Zener diode increases, which can lead to a change in voltage across it. However, at the same time, the voltage drop across resistor 4 increases, which causes the current of the field-effect transistor 2 to decrease and the voltage drop across the resistor 5. As a result, the blocking voltage between the gate and the source of the field-effect transistor 1 increases, resulting in an increase in its resistance and The stabilization of the current in the circuit of the silicon Zener diode 3. Thus, due to changes in the input voltage, the change in the current flowing through the Zener diode is significantly reduced, which leads to an increase in output stability. one voltage Parametric DC voltage stabilizer provides a stabilization factor in the range of up to 2000-3500 at low values of the current of the silicon Zener diode. The invention includes a parametric DC voltage regulator containing a zener diode connected in parallel to the output pins and a main field effect transistor whose drain is connected to the first input pin and the source through a resistor to the zener diode anode, in An additional field-effect transistor with a channel of the opposite type is introduced, in which the gate is connected to the source of the main field-effect transistor, the source is connected to the anode of the zener diode, and the drain to the second input th terminal via a further resistor, and directly to the gate of the main transistor. Sources of information taken into account during the examination 1. B. N. Ivanchuk and B. Ya. Ruvinov. Parametric voltage regulators on semiconductor devices and magnetic amplifiers., M., "Energy, 1971, p. 49, fig. 1-16.

2. Semiconductor devices in the technique of electrical communication, issue. 4, M., “Svy, 1969, p. 95

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