SU728196A1 - Device for protecting load from voltage power supply over-and undershoots - Google Patents
Device for protecting load from voltage power supply over-and undershoots Download PDFInfo
- Publication number
- SU728196A1 SU728196A1 SU782667464A SU2667464A SU728196A1 SU 728196 A1 SU728196 A1 SU 728196A1 SU 782667464 A SU782667464 A SU 782667464A SU 2667464 A SU2667464 A SU 2667464A SU 728196 A1 SU728196 A1 SU 728196A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- transistor
- load
- power supply
- undershoots
- voltage power
- Prior art date
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Description
1one
Изобретение относитс к защите источников электропитани и их нагрузок.This invention relates to the protection of power supplies and their loads.
Известно устройство защиты выбросов нар жени , содержащее транзистор, включенный в цепь нагрузки и образующий триггерную схему с другим транзистором , диод, резисторы, конденсатор и дополнительный транзистор 1. Недостаток этого устройства - полное отключение питани нагрузки при выбросах напр жени .A surge protection device is known, comprising a transistor included in the load circuit and forming a trigger circuit with a different transistor, a diode, resistors, a capacitor, and an additional transistor 1. The disadvantage of this device is a complete disconnection of the load power during voltage surges.
Наиболее близким к изобретению по техническим средствам и достигаемому эффекту вл етс устройство дл защиты Harpyaipi от выбросов. напр жени источника питани , содержащее регулирующий транзистор, цепочку резистор-стабилитрон , включенную параллельно нагрузке, и соединенный с ней буферный каскад, выполненный на двух транзисторах, коллектор первого из которых св зан с базой второго, коллектор второго - с базой регулирующего транзистора, а эмиттеры - с щинами питани 2. The closest to the invention in terms of technical means and the effect achieved is a device for protecting Harpyaipi from emissions. power supply voltage containing a regulating transistor, a resistor-zener diode chain connected in parallel to the load, and a buffer cascade connected to it, made of two transistors, the first collector of which is connected to the base of the second, the second collector to the base of the regulating transistor, and emitters - with nutrition women 2.
Его недостаток - пониженна надежность защиты нагрузки, св занна воз- можностью превыщени напр жени допустимой величины из-за низкой точности управлени регулирующим транзистором.Its disadvantage is the reduced reliability of the load protection associated with the possibility of overvoltage of the permissible value due to the low control accuracy of the regulating transistor.
Цель изобретени - повыщение надежности . The purpose of the invention is to increase reliability.
Дл достижени этой цели устройство защиты снабжено включенным в цепь базы регулирующего транзистора стабилизатором тока, выполненным на дополнительном транзисторе, диоде и двух резисторах .To achieve this goal, the protection device is equipped with a current regulator connected to the base of the regulating transistor, made on an additional transistor, a diode and two resistors.
На чертеже дана принципиальна схема устройства.The drawing is a schematic diagram of the device.
Оно содержит буферный каскад 1, состо щий из транзисторов 2, 3 и резисторов 4, 5, регулирующий транзистор 6, пороговую схему 7 на резисторах 8, 9 и стабилитроне 10, стабилизатор тока 11,. выполненный на транзисторе 12, диоде 13 и резисторах 14 и 15, источник питани t6 и нагрузку 17.It contains a buffer cascade 1 consisting of transistors 2, 3 and resistors 4, 5, regulating transistor 6, threshold circuit 7 on resistors 8, 9 and zener diode 10, current stabilizer 11 ,. performed on a transistor 12, a diode 13 and resistors 14 and 15, a power source t6 and a load 17.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782667464A SU728196A1 (en) | 1978-09-21 | 1978-09-21 | Device for protecting load from voltage power supply over-and undershoots |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782667464A SU728196A1 (en) | 1978-09-21 | 1978-09-21 | Device for protecting load from voltage power supply over-and undershoots |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU728196A1 true SU728196A1 (en) | 1980-04-15 |
Family
ID=20786607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782667464A SU728196A1 (en) | 1978-09-21 | 1978-09-21 | Device for protecting load from voltage power supply over-and undershoots |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU728196A1 (en) |
-
1978
- 1978-09-21 SU SU782667464A patent/SU728196A1/en active
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