Thyristor connection with overvoltage protection
US4237509A · kind A · utility
10Cited by
8References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1978 |
| Grant date | Dec 2, 1980 |
| Priority date | — |
| Expiry date | May 16, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0824
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A thyristor overvoltage protection circuit wherein an avalanche diode conducts to divert overvoltage energy from a thyristor to avoid self-ignition of the thyristor when the overvoltage reaches a particular level. A simulator circuit monitors the thermal loading on the conducting diode and activates an ignition pulse device if the thermal loading exceeds the safe operational range of the diode. The activated ignition pulse device ignites the thyristor so that the thyristor may divert the overvoltage energy and thereby discharge the diode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.