Transistor base control circuit for high frequency operation
US4764686A · kind A · utility
2Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1986 |
| Grant date | Aug 16, 1988 |
| Priority date | — |
| Expiry date | Apr 2, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/04126
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switching control circuit for a power transistor is provided. For applying an initial negative base current for disabling of the power transistor, a capacitor is provided which stores the energy required by charging not only when the power transistor is enabled but also when it is disabled. The capacitor discharges through a circuit for a time fixed by the time constant of a series RC network; this time is chosen of the order of time required for destoring the charges of the power transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.