Low power voltage clamp circuit
US4874967A · kind A · utility
17Cited by
3References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 15, 1987 |
| Grant date | Oct 17, 1989 |
| Priority date | — |
| Expiry date | Dec 15, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The voltage clamp circuit can clamp positive and/or negative voltages. The voltage clamp circuit includes voltage sensing and clamping circuit consisting of a chain of series connected diodes connected between an output and a reference terminal of the voltage clamp circuit. A current mirror circuit is connected to the chain of series connected diodes. A current generating circuit is connected to the current mirror circuit and sensing and clamping circuit. The voltage clamp circuit consumes only enough current to develop a threshold voltage across each of the chain of series connected diodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.