Input surge protection for converter circuit
US4254443A · kind A · utility
7Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1978 |
| Grant date | Mar 3, 1981 |
| Priority date | — |
| Expiry date | Dec 29, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/08146
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter circuit is disclosed utilizing pulse width modulation for power regulation. A rapid acting surge protection circuit for the power driving switch is operated from a string of zener diodes to disable the power switch. A base charge removal circuit is included for removing accumulated base charges on the driving transistor without the need for a bipolar driving signal for the power transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.