Circuit for driving a switching transistor
US4481431A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1984 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Apr 19, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0036
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for driving a switching transistor which includes a driving pulse transformer having a primary winding to which a switching pulse is applied, a secondary winding connected to the base and the emitter of the switching transistor to turn on the switching transistor by the switching pulse applied to the primary winding, and a third winding. The third winding is connected to the emitter or the collector of the switching transistor so that the current flowing through the switching transistor of the on-condition flows through the third winding and induces a current on the secondary winding which is inverse to a current induced on the secondary winding by the switching pulse applied to the primary winding. The base-storaged carrier is rapidly drawn out after lapse of the switching pulse so that power dissipation is considerably reduced and high speed switching operation can be effected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.