SU675525A1 - Device for protecting switching transistor with a load in collector circuit - Google Patents
Device for protecting switching transistor with a load in collector circuitInfo
- 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
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)
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)
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 |
-
1978
- 1978-03-02 SU SU782585936A patent/SU675525A1/en active
Cited By (1)
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 |
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