Control circuitry for high voltage solid-state switches
US4447744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1981 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Dec 22, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/567
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Control circuitry used with the combination of a control switch (typically a gated diode switch GDS) which is coupled to a control (gate) terminal of a like load switch which consists essentially of first and second p-n-p transistors. The collector of the first p-n-p transistor is coupled to an anode of the control switch. The emitter of the first p-n-p transistor is coupled to the base of the second p-n-p transistor and to a control circuitry input terminal. The collector of the second p-n-p transistor is coupled to a gate terminal of the control switch. The control circuitry limits undesirable current flow into the load switch and has fewer components than commonly used control circuitry which performs a like function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.