Circuit for protecting switching power source from overloads and shot circuits
US5568343A · kind A · utility
14Cited by
4References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1994 |
| Grant date | Oct 22, 1996 |
| Priority date | — |
| Expiry date | Oct 19, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0822
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A protective circuit is used in conjunction with a switching power source for protecting the latter from overload and from short circuits. It is detected whether the current at the primary winding current of a switching power source transformer, the load current of the switching power source, or both exceed predetermined reference voltages. If so, supply of power to the switching power source is interrupted for a predetermined period of time, thereby bringing the switching power source into inoperable condition in this duration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.