Up-down voltage regulator
US4459537A · kind A · utility
36Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1982 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Nov 22, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An up-down voltage regulator includes an up regulator followed by a series pass PNP transistor. The base of the PNP transistor is coupled to an unregulated voltage source. The up regulator is responsive to the voltage at the collector of the PNP transistor to control the emitter voltage of the PNP transistor for all values of the unregulated voltage source to bias the PNP transistor so as to establish and maintain the collector voltage of the PNP transistor at a desired regulated value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.