SU432476A1 - DEVICE FOR PROTECTION FROM OVERLOAD POWER SUPPLY OF DC POWER - Google Patents

DEVICE FOR PROTECTION FROM OVERLOAD POWER SUPPLY OF DC POWER

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Publication number
SU432476A1
SU432476A1 SU1692460A SU1692460A SU432476A1 SU 432476 A1 SU432476 A1 SU 432476A1 SU 1692460 A SU1692460 A SU 1692460A SU 1692460 A SU1692460 A SU 1692460A SU 432476 A1 SU432476 A1 SU 432476A1
Authority
SU
USSR - Soviet Union
Prior art keywords
transistor
power
protection
overload
power supply
Prior art date
Application number
SU1692460A
Other languages
Russian (ru)
Original Assignee
В. И. Осадчий
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 В. И. Осадчий filed Critical В. И. Осадчий
Priority to SU1692460A priority Critical patent/SU432476A1/en
Application granted granted Critical
Publication of SU432476A1 publication Critical patent/SU432476A1/en

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Description

1one

Известны устройства дл  защиты от нерегрузок источника питани  посто нного тока, содерлсащие регулирующий транзистор, релейную схему, усилитель посто нного тока, резисторы и стабилитрон.Devices for protection against unloading of a DC power source are known, which include a control transistor, a relay circuit, a DC amplifier, resistors, and a zener diode.

Дл  повышени  надежности и обеспечени  полного отключени  потребител  от источника при перегрузках в предлагаемом устройстве транзистор усилител  носто нного тока подключен коллектором через резистор к эмиттеру транзистора релейной схемы, база которого через стабилитрон и резистор соединена с коллектором регулирующего транзистора .In order to increase reliability and ensure complete disconnection of the consumer from the source in case of overloads in the proposed device, an amplifier of a transient current is connected to a collector through a resistor to the emitter of the relay of the relay circuit, the base of which is connected to the collector of the regulating transistor through a zener diode.

На чертеже дана принципиальна  злектрическа  схема описываемого устройства.The drawing is a schematic electrical diagram of the device described.

Дл  включени  устройства на базу транзистора 1 релейной схемы 2 подают отрицательный импульс, который приоткрывает транзистор 1 и регулирующий транзистор 3,  вл ющийс  также выходным транзистором релейной схемы. На выходе устройства но вл етс  нанр жеиие, которое через цень положительной обратной св зи резистор 4 - стабилитрон 5 поступает на базу транзистора 1, после чего транзисторы 1 и 3 лавинообразно переход т ь открытое состо ние.To turn on the device, a negative pulse is applied to the base of the transistor 1 of the relay circuit 2, which opens the transistor 1 and the control transistor 3, which is also the output transistor of the relay circuit. At the output of the device, there is a nanogram, which, through the price of positive feedback, resistor 4 - zener diode 5 enters the base of transistor 1, after which transistors 1 and 3 go to the open state in an avalanche manner.

Если на выходе возникает перегрузка по току или короткое замыкание, то базовый ток If the output current overload or short circuit, the base current

транзистора 3 увеличиваетс . Транзистор 3 выходит из насыщени , и падение напр жепи  на его эмнттер-коллекторном переходе, управл ющее работой транзистора 6, увеличиваетс . Коллекторный ток транзистора 6 возрастает, падение напр жени  на резисторе 1 увели лшаетс , что приводит к лавинообразному запиранию транзисторов 1 и 3.transistor 3 increases. Transistor 3 is out of saturation, and the voltage drop across its input-collector junction, controlling the operation of transistor 6, increases. The collector current of transistor 6 increases, the voltage drop across resistor 1 increases, which leads to an avalanche-like closing of transistors 1 and 3.

Стабилитрон 5 ускор ет срабатывание устройства . Изменение величины уставки тока срабатывани  осуществл етс  резисторами 7 и 8.Zener diode 5 accelerates the response of the device. The change in the response current setting is made by resistors 7 and 8.

Нредмет изобретени Nredmet of the invention

Устройство дл  защиты от перегрузок источника питани  посто нного тока, содержащее регулирующий транзистор, релейную схему, усилитель носто нного тока, резисторы и стабилитрон, отличающеес  тем, что, с целью повыи}ени  надеж1 ости и обеспечени  полного отключени  потребител  от источника при перегрузках, транзистор усилител  п-эсто пного тока подключен коллекторо:л через резистор к эмиттеру транзистора релейной схемы, база которого через стабилитрон и резистор соединена с коллектором регулирующего транзистора.A device for protection against overloads of a DC power source, containing a regulating transistor, a relay circuit, an amplifier of a constant current, resistors, and a zener diode, characterized in that, in order to increase reliability and ensure complete disconnection of the consumer from the source during overloads, the transistor the p-esto power amplifier is connected to the collector: l through a resistor to the emitter of the transistor of the relay circuit, the base of which is connected to the collector of the regulating transistor through a zener diode and a resistor.

SU1692460A 1971-08-11 1971-08-11 DEVICE FOR PROTECTION FROM OVERLOAD POWER SUPPLY OF DC POWER SU432476A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1692460A SU432476A1 (en) 1971-08-11 1971-08-11 DEVICE FOR PROTECTION FROM OVERLOAD POWER SUPPLY OF DC POWER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1692460A SU432476A1 (en) 1971-08-11 1971-08-11 DEVICE FOR PROTECTION FROM OVERLOAD POWER SUPPLY OF DC POWER

Publications (1)

Publication Number Publication Date
SU432476A1 true SU432476A1 (en) 1974-06-15

Family

ID=20486418

Family Applications (1)

Application Number Title Priority Date Filing Date
SU1692460A SU432476A1 (en) 1971-08-11 1971-08-11 DEVICE FOR PROTECTION FROM OVERLOAD POWER SUPPLY OF DC POWER

Country Status (1)

Country Link
SU (1) SU432476A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897594A (en) * 1987-11-09 1990-01-30 Texas Instruments Incorporated High gain driver circuit and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4897594A (en) * 1987-11-09 1990-01-30 Texas Instruments Incorporated High gain driver circuit and method

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