Transformer coupled power switching circuit
US4748532A · kind A · utility
33Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1987 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | May 6, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power switching circuit for switching power repetitively to a load at a relatively low frequency employs a power switching device which is driven across an isolating transformer interface. The drive signals are high frequency pulse signals which are modulated with the low frequency switching information, the modulations being detected in the secondary circuit of the transformer. Such an arrangement affords isolated driving with fast switching edges and requires only a small transformer. Power for the detection circuit is derived by rectification of the high frequency signals induced in the transformer secondary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.