Field controlled thyristor control circuit with additional FCT in reverse bias circuit
US4354121A · kind A · utility
8Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1981 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Jul 10, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D84/676
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switching control circuit includes a first field controlled thyristor having a gate and a cathode between which a backward bias voltage source and a second field controlled thyristor are connected in series. Conduction of the second field controlled thyristor is controlled by controlling a voltage applied across the gate and the cathode, thereby to control conduction of the first field controlled thyristor. A large load current can be positively and safely turned on and off by a relatively small control current or voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.