SU675525A1 - Device for protecting switching transistor with a load in collector circuit - Google Patents

Device for protecting switching transistor with a load in collector circuit

Info

Publication number
SU675525A1
SU675525A1 SU782585936A SU2585936A SU675525A1 SU 675525 A1 SU675525 A1 SU 675525A1 SU 782585936 A SU782585936 A SU 782585936A SU 2585936 A SU2585936 A SU 2585936A SU 675525 A1 SU675525 A1 SU 675525A1
Authority
SU
USSR - Soviet Union
Prior art keywords
switching transistor
load
collector circuit
protecting switching
collector
Prior art date
Application number
SU782585936A
Other languages
Russian (ru)
Inventor
Марк Иванович Анисимов
Борис Евлампиевич Сергеев
Евгений Николаевич Тихомиров
Светлана Петровна Тимошенко
Original Assignee
Предприятие П/Я Р-6543
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я Р-6543 filed Critical Предприятие П/Я Р-6543
Priority to SU782585936A priority Critical patent/SU675525A1/en
Application granted granted Critical
Publication of SU675525A1 publication Critical patent/SU675525A1/en

Links

Landscapes

  • Electronic Switches (AREA)
  • Emergency Protection Circuit Devices (AREA)

Description

мальном значении напр жени  питани  П1рй этом переКЯйЧсибщйй транзистор 1 не чувствует входной ёйГГал; что сигнализирует о предельном максй мальном напр жении источника питани . Полное сопротивление делител  определ етс  током базы транзистора 3, вызывающим его отпирание. При уменьшении напр жени  источни jta питани  относительно ее максимального значенг  Напр жение д лйтел  становитс  недостаточным дл  отпирани  транзистора 3. В этих услови х при закорачивании нагрузки 4 растет ток транзистора 1 и соответственно Напр жение на резисторе 2 до тех пор, пока суМма этого напр жени  и напр жени  не достигнет величины, достаточной дл  отпирани  транзистора 3, воздей675525The maximum value of the power supply voltage is that the power transistor 1 does not feel its input voltage; which indicates the maximum maximum voltage of the power source. The impedance of the divider is determined by the base current of the transistor 3, causing it to be unlocked. When the voltage of the power supply jta is reduced relative to its maximum value, the voltage of the voltage becomes insufficient to unlock the transistor 3. Under these conditions, when the load 4 is shorted, the current of the transistor 1 increases and, accordingly, the voltage on the resistor 2 until this voltage is and the voltage does not reach a value sufficient to unlock transistor 3, the effects of 675525

ствующего в свою очередь на вход транзистора I, что обеспечивает защиту переключающего транзистора по мощности. in turn, the input transistor I, which protects the switching transistor by power.

Claims (1)

5 Формула изобретени 5 claims Устройство дл  защиты переключающего трайзистЬра с нагрузкой в цепи коллектора, содержащее резисторы и дополнительный транзистор, змиттер которого подключен к общей шине , база - к змиттеру, а коллектор к базе переключающего транзистора, отличающеес  тем, что,A device for protecting a switching traisist with a load in the collector circuit, containing resistors and an additional transistor, the emitter of which is connected to the common bus, the base to the emitter, and the collector to the switching transistor base, 15 с целью упрощени , мехеду базой допо пНительн6го и коллектором переключающего транзистора включен резистор .15 in order to simplify, the mechadu of the auxiliary base and the collector of the switching transistor included a resistor. . fЛi-.лf -- ,Уf:-J. FLI.LF - UF: -J
SU782585936A 1978-03-02 1978-03-02 Device for protecting switching transistor with a load in collector circuit SU675525A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782585936A SU675525A1 (en) 1978-03-02 1978-03-02 Device for protecting switching transistor with a load in collector circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782585936A SU675525A1 (en) 1978-03-02 1978-03-02 Device for protecting switching transistor with a load in collector circuit

Publications (1)

Publication Number Publication Date
SU675525A1 true SU675525A1 (en) 1979-07-25

Family

ID=20751639

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782585936A SU675525A1 (en) 1978-03-02 1978-03-02 Device for protecting switching transistor with a load in collector circuit

Country Status (1)

Country Link
SU (1) SU675525A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121283A (en) * 1989-03-08 1992-06-09 Hitachi, Ltd. Overcurrent protective circuit for electrostatic self-turn-off devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5121283A (en) * 1989-03-08 1992-06-09 Hitachi, Ltd. Overcurrent protective circuit for electrostatic self-turn-off devices

Similar Documents

Publication Publication Date Title
CA2086245A1 (en) Surge current-limiting circuit for a large-capacitance load
JP2664678B2 (en) Power supply circuit
JPS54159157A (en) Drive circuit for inductive load
SU675525A1 (en) Device for protecting switching transistor with a load in collector circuit
US3022467A (en) Oscillator circuit with power transistor output stage
GB2177823A (en) Current control circuit for a stepping motor
SU905992A1 (en) Sawtooth voltage generator
JPS561620A (en) Output circuit
SU828185A1 (en) Dc voltage stabilizer
SU744523A1 (en) Stabilized power supply source
SU726515A2 (en) Parametric voltage stabilizer
SU647676A2 (en) Dc voltage stabilizer
SU836631A2 (en) Device for protecting dc voltage stabilizer
SU896761A1 (en) Electronic switch
SU658544A1 (en) Overload and short-circuiting-protected dc voltage stabilizer
JPS5534771A (en) Constant voltage circuit
SU362473A1 (en) TRANSISTOR KEY
SU744522A1 (en) Short-circuiting protected dc voltage stabilizer
SU723544A2 (en) Transistorized dc voltage stabilizer
KR960007922Y1 (en) Support power circuit for charging battery
SU935918A1 (en) D.c.voltage stabilizer
SU479098A1 (en) Stabilizer Protection Device
JPS5666911A (en) Protection circuit for amplifier
SU520690A1 (en) Amplifier
SU705682A1 (en) Analog switch