JPS567121A - Driving circuit for switching element - Google Patents
Driving circuit for switching elementInfo
- Publication number
- JPS567121A JPS567121A JP8221179A JP8221179A JPS567121A JP S567121 A JPS567121 A JP S567121A JP 8221179 A JP8221179 A JP 8221179A JP 8221179 A JP8221179 A JP 8221179A JP S567121 A JPS567121 A JP S567121A
- Authority
- JP
- Japan
- Prior art keywords
- resistance
- light
- thyristor
- varies
- light emitting
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Control Of Temperature (AREA)
- Control Of Voltage And Current In General (AREA)
- Electronic Switches (AREA)
Abstract
PURPOSE: To secure the control of the driving current of the switching element, by using the light emitting element which emits the light with the microcurrent flowing to the sensor element and the photodetecting resistance variable element the impedance of which varies by the light volume of the light emitting element.
CONSTITUTION: The serial circuit of sensor element 12 the resistance value of which varies, light emitting element which emits the light with application of the voltage or the current, and resistance 14 each is connected in parallel to thyristor 10 functioning as a switching element. At the same time, resistance 15 is connected between the middle point of elements 12 and 13 and gate g of thyristor 10. Photodetecting resistance variable element 16 connected in parallel to element 12 is combined optically to element 13, and the impedance varies in reverse proportion to the heat generation quantity. In such constitution, the control can be given to the driving current of thyristor 10.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8221179A JPS567121A (en) | 1979-06-28 | 1979-06-28 | Driving circuit for switching element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8221179A JPS567121A (en) | 1979-06-28 | 1979-06-28 | Driving circuit for switching element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS567121A true JPS567121A (en) | 1981-01-24 |
Family
ID=13768078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8221179A Pending JPS567121A (en) | 1979-06-28 | 1979-06-28 | Driving circuit for switching element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS567121A (en) |
-
1979
- 1979-06-28 JP JP8221179A patent/JPS567121A/en active Pending
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