SU993229A2

SU993229A2 - Dc voltage stabilizer

Info

Publication number: SU993229A2
Application number: SU813268739A
Authority: SU
Inventors: Борис Исаакович Чемерисов
Original assignee: Опытное Конструкторско-Технологическое Бюро Института Металлофизики Ан Усср
Priority date: 1981-04-07
Filing date: 1981-04-07
Publication date: 1983-01-30

Description

(54) СТАБИЛИЗАТОР ПОСТОЯННОГО НАПРЯЖЕНИЯ(54) CONSTANT VOLTAGE STABILIZER

Изобретение относитс к электротехнике и может быть использовано в различных устройствах электропитани радио- и электронной техники.The invention relates to electrical engineering and can be used in various power supply devices for radio and electronic equipment.

По основному авт. св. О 744524 известен стабилизатор посто нного напр жени , содержащий последовательный регулирующий элемент, управл 01ца цепь которого подключена к выходу усилител обратной св зи, выходной сгл икивающий фильтр и узел защиты, состо щий из.исполнительного элемента на тиристоре, силовым переходом включенным между входным выводс н и регулирующим элементом, блок управлени /тиристором и датчиком аварийного режима, причем управл ющий электрод тиристора подключен через первый резистор к коллектору введенного коммутирукицего транзистора, база которого через второй резистор подключена к Катоду дополнительного тиристора и к выходному выводу через резистивный; делитель, средн точка которого подключена к одному из выводов конден сатора и через третий резистор к управл вощему электроду дополнительного тиристора и коллектору транзистора защиты, другой вывод конденсатора, эмиттер коммутирующего транзистораAccording to the main author. St. About 744524 a DC voltage regulator is known, which contains a series regulating element, the control circuit of which is connected to the output of the feedback amplifier, the output slider filter and the protection node, consisting of an executive element on the thyristor, with a power transition connected between the input terminal and a regulating element, a control / thyristor unit and an emergency mode sensor, the thyristor control electrode being connected via the first resistor to the collector of the input commutator transistor, ba and which via a second resistor connected to the cathode of auxiliary thyristor and to the output terminal through the resistor; divider, the middle point of which is connected to one of the capacitor terminals and through the third resistor to the control electrode of the additional thyristor and the protection transistor collector, another capacitor output, the emitter of the switching transistor

и анод дополнительного тиристора подключены к общей шине 1.and the anode of the additional thyristor is connected to the common bus 1.

Однако, осуществл защиту от аварийных режимов, устройство не огра;ничивает падение напр жени , а соответственно , и рассеиваемую мощность на регулирующем элементе стабилизатора , что приводит к снижению надежности работы устройства в целом.However, it carried out protection against emergency operation, the device does not limit the voltage drop, and accordingly, the power dissipation on the regulator element of the stabilizer, which leads to a decrease in the reliability of the device as a whole.

10ten

Цель изобретени - повышение надежности работы.The purpose of the invention is to increase the reliability of work.

Поставленна цель достигаетс тем, что в стабилизатор посто нного напр жени введен датчик напр жени на The goal is achieved by the fact that a voltage sensor is introduced into the DC voltage stabilizer.

15 регулирующем элементе, состо щий из транзистора, делител напр жени , стабилитрона и туннельного диода, а в блок управлени дополнительно введены резистивный делитель и тран20 зистор, коллектор которого подключен к катоду дополнительного тиристора, эмиттер - к общей шине, а база - к средней точке указанного резистивного делител , один вывод которого под25 ключен к общей шине, а другой - к колллектору транзистора датчика напр жени на регулирующем элементе, база транзистора датчика напр жени на регулирующем элементе подключена 15 control element consisting of a transistor, a voltage divider, a Zener diode and a tunnel diode, and a resistor divider and a transistor, the collector of which is connected to the cathode of the additional thyristor, emitter to the common bus and the base to the midpoint The specified resistive divider, one output of which is connected to the common bus, and the other to the collector of the transistor of the voltage sensor on the regulating element, the base of the transistor of the voltage sensor on the regulating element is connected

Claims

30 respectively to one of the terminals of the tunnel diode and through the voltage divider to the output circuit of the regulating element, and the middle point of the voltage divider is connected via a zener diode to another output of the tunneled diode and to the input circuit of the relay element to which the voltage transistor regulating element The drawing shows a schematic diagram of a constant voltage regulator. The constant voltage stabilizer contains a smoothing filter 1, a serial regulating element 2, the control circuit of which is connected to the output of the feedback amplifier 3, emergency operation sensors from overcurrent 4, from the overvoltage 5 at the stabilizer output, from thermal overload 6, at overvoltage 7 at the input of the stabilizer, at overvoltage 8 at the input of the stabilizer, which are connected to the base of the protection transistor 9. The collector of the transistor 9 through a resistor 10 is connected to the control unit 11, consisting of an additional thyristor 12, whose cathode is connected to the collector of the additional transistor 13 and to the midpoint of the resistive divider 14 connected by one output to the base of the switching transistor 15 and the other the circuit of the protection transistor 9 to the connection point of the resistor 16 and the capacitor 17 connected in parallel to the stabilizer input terminals. The anode of the thyristor 12, the emitters of transistors 1 and 15 are connected to the common bus of the stabilizer. The collector of transistor 15 through a resistor 18 is connected to the control electrode of the actuator on the thyristor 19, the power transition is included in the input circuit of the regulating element 2, the base of the transistor 13 is connected through a resistor 20 to the common bus of the stabilizer and through a resistor 21 to the sensor 22 nor on the regulating element 2, consisting of the transistor 23, the base of which through the resistive divider 2 is connected to the output circuit of the regulating element 2 and through the tunnel diode 25 together with the emitter of the transistor 23 and one of the terminals bilitrona 26 to the output terminal of the regulating element 2. The output of the zener diode 26 .Protivopolozhny Con chen to the middle point of the resistive divisor 24. Stabilizer DC voltage operates as follows. When voltage is applied, when the voltage on the regulating element 2 exceeds the set value, the actuating element - thyristor 19 - is open, and the rectifier voltage is fully applied to the regulating element

2. When the supply voltage exceeds the set value, the voltage drop across the regulating element 2 increases, which leads to an increase in the current in the circuit of the resistive divider 24 - tunnel diode 25. At the same time, the voltage drop across the tunnel diode 25 increases, resulting in an optimized transistor 23 and 13, the transistor 15 is closed, which causes the thyristor 19 to be turned off until the voltage on the control element 2 decreases to the set value. The zener diode 26 limits the current flowing through the tunnel diode 25. The use of the proposed device as a result of introducing an additional transistor into the control unit and the voltage sensor on the regulating element allows, along with protection from emergency modes, to pre-stabilize the rectifier voltage element constant voltage, thereby improving its energy mode and reliability. Claims of the invention. Permanent stabilizer, eg, according to the authors. St. W 744524, characterized in that, in order to increase the reliability of operation, a voltage sensor on a control-element consisting of a transistor, a voltage divider, a zener diode and a tunnel diode is inserted into it, and a resistive divider and a transistor, the collector of which is connected to the cathode of the additional thyristor, the emitter to the common bus, and the base to the midpoint of the specified resistive divider, one output of which is connected to the common bus, and the other to the collector of the transistor of the voltage sensor The base of the transistor of the voltage sensor on the regulating element is connected respectively to one of the tunnel diode pins and through the voltage divider to the output circuit of the regulating element, and the middle point of the voltage divider is connected to another terminal of the tunnel diode and to the input regulator circuit the element to which the emitter of the voltage sensor transistor is connected to the control element. Sources of information taken into account during the examination 1. USSR author's certificate W 744524, cl. G 05 F 1/58, 1978. Gg1G / I%