SU775814A1 - Device for protection of ac power supply source - Google Patents
Device for protection of ac power supply source Download PDFInfo
- Publication number
- SU775814A1 SU775814A1 SU782653514A SU2653514A SU775814A1 SU 775814 A1 SU775814 A1 SU 775814A1 SU 782653514 A SU782653514 A SU 782653514A SU 2653514 A SU2653514 A SU 2653514A SU 775814 A1 SU775814 A1 SU 775814A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- optocoupler
- thyristors
- resistor
- parallel
- led
- Prior art date
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- Power Conversion In General (AREA)
- Protection Of Static Devices (AREA)
Description
.1.one
Изобретение относитс к области защиты источников питани .This invention relates to the field of power supply protection.
Известно устройство защиты и коммутации , содержащее исполнительный орган, выполненный на двух встречно- 5 последовательно включенных тиристорах, шунтированных встречными, диодами, причем катоды тиристоров объединены. Недостатком его вл етс невысока надежность при защите источников. 10A protection and switching device is known that contains an executive unit made on two counter-5 series-connected thyristors shunted by counter diodes, and the cathodes of the thyristors are combined. The disadvantage of it is low reliability when protecting sources. ten
Наиболее близким по техническим средствам и достигаемому- результату вл етс устройство дл защиты источника питани переменного тока, j содержащее датчик тока, выполненный в виде шунта, параллельно которому через первый резистор подключены встречно-параллельно соединенные светодиоды первого оптрона, фототирис- 20 тор которого через второй резистор подк.гаочен к источнику посто нного напр жени , и исполнительный орган защиты. Недостатком этого устройства вл етс невысока надежность. 25The closest in technical means and the achieved result is a device for protection of an alternating current power source, j containing a current sensor, made in the form of a shunt, in parallel to which through the first resistor are connected the counter-parallel connected LEDs of the first optocoupler, the photodistor 20 of which the resistor is connected to the DC source and the protection executive. A disadvantage of this device is low reliability. 25
С целью повышени надежности устройство защиты снабжено трансформатором , первична обмотка которого подключена к источнику переменного .тока, а вторична - через фототирис- ЗОIn order to increase the reliability, the protection device is equipped with a transformer, the primary winding of which is connected to the alternating current source, and the secondary winding through the phototrisis
торы второго оптрона включена между управл ющими электродами тиристоровthe tori of the second optocoupler is connected between the control electrodes of the thyristors
На фиг.1 показано устройство защиты; на фиг. 2 - вариант выполнени с трансформатором без вывода средней точки вторичной обмотки.Figure 1 shows the protection device; in fig. 2 shows an embodiment with a transformer without removing the middle point of the secondary winding.
Источник содержит последовательно соединенные нагрузку 1, датчик перегрузки 2 и два встречно включенных тиристора 3,4. Параллельно тиристорам и встречно им включены диоды 5,6, причем аноды диодов 5,6 и катоды тиристоров 3,4 соединены между собой. В цепи управл ющих электродов тиристоров через резистор включен оптрон 7 с фототиристорами 8,9.The source contains a series-connected load 1, an overload sensor 2 and two oppositely connected thyristors 3,4. In parallel, the thyristors and counter-diodes 5,6 included, with the anodes of the diodes 5,6 and the cathodes of thyristors 3,4 interconnected. An optocoupler 7 is connected through a resistor to the thyristor control electrode circuits with photo thyristors 8.9.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782653514A SU775814A1 (en) | 1978-07-31 | 1978-07-31 | Device for protection of ac power supply source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782653514A SU775814A1 (en) | 1978-07-31 | 1978-07-31 | Device for protection of ac power supply source |
Publications (1)
Publication Number | Publication Date |
---|---|
SU775814A1 true SU775814A1 (en) | 1980-10-30 |
Family
ID=20780856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782653514A SU775814A1 (en) | 1978-07-31 | 1978-07-31 | Device for protection of ac power supply source |
Country Status (1)
Country | Link |
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SU (1) | SU775814A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6337523B1 (en) | 2000-02-10 | 2002-01-08 | Troy Video Recording Services, Inc. | Automated operation of silicon controlled rectifier switches using sensors such as Schmitt devices |
-
1978
- 1978-07-31 SU SU782653514A patent/SU775814A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6337523B1 (en) | 2000-02-10 | 2002-01-08 | Troy Video Recording Services, Inc. | Automated operation of silicon controlled rectifier switches using sensors such as Schmitt devices |
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