SU598054A1

SU598054A1 - Dc voltage stabilizer

Info

Publication number: SU598054A1
Application number: SU762408443A
Authority: SU
Inventors: Вячеслав Николаевич Суховеев; Габтелкадыйр Габтрахманович Муртазин
Original assignee: Предприятие П/Я М-5209
Priority date: 1976-10-04
Filing date: 1976-10-04
Publication date: 1978-03-15

Description

1 .one .

Изобретение относитс к области электроники и может быть использовано в источниках питани электрических и радиотехнических цепей.The invention relates to the field of electronics and can be used in power sources of electrical and radio engineering circuits.

Известен стабилизатор о защитсй отThe stabilizer is known to protect against

перегрузки по току и короткого замыкани на выходе, содержащий регулирующий элемент , датчик тока, тиристор и защитный транзистор .overcurrent and short-circuit at the output, containing a regulating element, a current sensor, a thyristor and a protective transistor.

Наиболее близким техническим решением к данному изобретению вл етс стабилизатор посто нного напр жени , содержащий последовательно включенный в выходную шину регулирующий элемент, управл ющей цепью соединенный через резистор с общей шиной с выходом измерительно-усилительного узла, включенного параллельно выходным выводам и с выходом токостабилизирующего двухполюсника, подключенного через диод к блсжу дл защиты, состо щему из последс«ательно включенного с регулирующим элементом датчика тока, транзистора защиты , коллектор1когорого через делитель подсоединен к общей шине, эмиттер - к перв1 му выводу датчика тока и к регулирующему элементу, а база через резистор подсоединена ко второму выводу датчика , тиристора , катод которого подключен к общей щине, а анод через резистор - ко второму выводу датчика тока .The closest technical solution to this invention is a DC voltage regulator, comprising a control element connected in series to the output bus, a control circuit connected via a common bus resistor to the output of the measuring and amplifying unit connected in parallel to the output terminals and to the output of the current-stabilizing two-terminal, connected via a diode to a power supply unit for protection consisting of a series connected with a regulating element of a current sensor, a protection transistor, a collector The divider is connected to a common bus through a divider, the emitter is connected to the first current sensor and regulating element, and the base is connected via a resistor to the second output of the sensor, the thyristor whose cathode is connected to the common bus, and the anode through a resistor to the second output of the current sensor .

Однако указанное устройство имеет р д существенных недостатков: сложность уст ройства защиты и, соответственно, низка надежность; ПОрог срабатывани устройства защиты сильно зависит от изменени входного напр жени и температуры; низка помехозащищенность устройства защиты от вли ни помех входного напр жени и кратковременных толчков тока нагруаси.However, this device has a number of significant drawbacks: the complexity of the protection device and, accordingly, the reliability is low; The throttle response of the protection device strongly depends on changes in the input voltage and temperature; low immunity of the protection device against the influence of input voltage interference and short-term impulses of the load current.

Claims

To simplify the device and increase its reliability, eliminate the influence of input voltage noise and short-term current shocks, stabilize the protection response when the input voltage and temperature change in the proposed constant voltage stabilizer, the thyristor ground electrode is connected to the midpoint of the divider and between the cathode and the control electrode of the specified thyristor is connected to an additionally introduced co-capacitor, in addition, the emitter of the protection transistor is connected to the first output of the sensor current through additional inputted semi pr (Female O. Diode. The drawing shows a circuit diagram of a constant voltage regulator. The stabilizer contains a regulating element 1 connected in series to the output hyena, the control circuit connected to the common bus through a measuring resistor 2 -amplifier 3 and with the output of a current-stabilizing two-terminal 4 connected via diode 5 to a protection block 6 consisting of a current sensor 7 on a resistor, transistor 8 is protected, the collector of which is through The cable on resistors 9, 10 is connected to a common bus, the base through resistor 11 is connected to the second output of current sensor 7, and the emitter is not cut through a semiconductor diode 12 to the first output of current sensor 7, the thyristor 13, the anode of which is connected to a second terminal of the current sensor 7, and a capacitor 15 is connected between the control electrode and the cathode of the thyristor 13. The stabilizer operates as follows. Resistor 7 is selected so that at rated load current transistor 8 is closed. During an overload or short circuit, the voltage drop across resistor 7 increases, transistor 8 opens and current flows through a divider across resistors 9, 10, while voltage drop increases across resistor 10. The protection unit is triggered when the voltage on the resistor U is increased to the thyristor on level 13. The interference resistance to protect against the influence of input voltage disturbances from short-term jolts of the load current is provided by connecting the capacitor 15 between the control electrode and the cathode of the thyristor 13 This allows It does not work as a capacitor for capacitive load. The response threshold of the unit for protection against changes in input voltage and ambient temperature is stabilized by means of diode 12 connected by an anode to the resistor of current sensor 7 and cathode to the emitter of protection transistor 8. Claim 1. Stabilizer voltage, containing sequentially connected to the output bus control element, control circuit connected via a common bus resistor to the output of the measuring and amplifying node connected in parallel to the output pins and to the output of the current-stabilizing two-pole connected via a diode protection .consistently connected in series with the regulating element of the current sensor, a protection transistor, the collector of which is connected through a divider to the common bus, uh tter- to the first output of the current sensor and to the regulating element, and the base through a resistor is connected to the second output of the current sensor, the thyristor, the cathode of which is connected to the common busbar, and the anode through the resistor to the second output of the current sensor, distinguishing itself that, in order to simplify and increase the reliability of the device, the control electrode of the thyristor is connected to the midpoint of the divider. 2. A stabilizer according to claim 1, in which, in order to eliminate the influence of the input voltage disturbances and short-term jolts of the load current, an additionally introduced capacitor is connected between the control electrode and the cathode of the thyristor. 3. A stabilizer in accordance with claim 1, characterized in that, in order to stabilize the protection response threshold when the input voltage and temperature change, the emitter of the protection transistor is connected to the first output of the current sensor through an input semiconductor diode. Information sources received during attention in the examination:. 1. For the number 2314931, cl. Q-O5 D 1/59, 1976, according to which the decision is on the issuance of the author's certificate.

2. USSR author's certificate number 455333, cl. Q 05 P 1/58, 1972.