JPS5546871A - Light-triggered thyristor - Google Patents
Light-triggered thyristorInfo
- Publication number
- JPS5546871A JPS5546871A JP11895478A JP11895478A JPS5546871A JP S5546871 A JPS5546871 A JP S5546871A JP 11895478 A JP11895478 A JP 11895478A JP 11895478 A JP11895478 A JP 11895478A JP S5546871 A JPS5546871 A JP S5546871A
- Authority
- JP
- Japan
- Prior art keywords
- light
- thyristor
- emitted
- light source
- trigger signal
- 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
- Power Conversion In General (AREA)
- Electronic Switches (AREA)
Abstract
PURPOSE: To surely turn on a light-triggered thyristor of high critical rate of rise in off- state voltage without increasing the quantity of light emitted from a light source, by appropriately amplifying a light trigger signal emitted from the light source and applying the amplified signal to the thyristor.
CONSTITUTION: A light trigger signal emitted from a light source 1 such as a limit- emitting diode is supplied to a light amplification circuit 11 through a first light guide 2. The light amplification circuit 11 comprises a PNPN-type light-emitting negative resistance element 27 and a constant voltage circuit which includes a Zener diode 24 and a capacitor 23. The light trigger signal is amplified by the light amplification circuit and then supplied to a light-triggered thyristor 13 through a second light guide 12 to turn on the thyristor to supply an output to a load 7. The light-triggered thyristor 13 of high critical rate of rise in off-state voltage can thus be surely turned on without increasing the quantity of light emitted from the light source 1. This results in raising the reliability.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11895478A JPS5546871A (en) | 1978-09-27 | 1978-09-27 | Light-triggered thyristor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11895478A JPS5546871A (en) | 1978-09-27 | 1978-09-27 | Light-triggered thyristor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5546871A true JPS5546871A (en) | 1980-04-02 |
Family
ID=14749366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11895478A Pending JPS5546871A (en) | 1978-09-27 | 1978-09-27 | Light-triggered thyristor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5546871A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0400153A1 (en) * | 1988-11-07 | 1990-12-05 | Kabushiki Kaisha Toshiba | Optical semiconductor device having a zero-crossing function |
-
1978
- 1978-09-27 JP JP11895478A patent/JPS5546871A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0400153A1 (en) * | 1988-11-07 | 1990-12-05 | Kabushiki Kaisha Toshiba | Optical semiconductor device having a zero-crossing function |
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