Transistor driving circuit and circuit controlling method
US4751403A · kind A · utility
6Cited by
5References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1985 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Jun 10, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/04213
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A driving circuit uses an output transistor and a driving transformer with a secondary coil being connected to the base of the output transistor. In order to get a high speed switching circuit without thermal runaway, the storage period of the output transistor is detected. A signal supplied to a primary coil of the driving transformer, for example, a driving pulse, is controlled in response to the detected value of the storage period. By minimizing the value of the storage period, it becomes possible to minimize a fall time of the output transistor, so that a stability of the driving circuit can be maintained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.