A.C. protective circuit
US3988640A · kind A · utility
1Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1975 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | May 27, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electronic device is protected from excessive A. C. voltages by a diode in series with the A. C. signal path which is forward biased from a shunt D. C. power supply for passing desired A. C. signals without distortion and which is reverse biased by a series capacitor which is charged through a shunt threshold device whenever the A. C. voltage exceeds a predetermined level and is discharged through a shunt path thereafter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.