Low current linear/high current chopper voltage regulator
US4502152A · kind A · utility
52Cited by
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9Claims
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Assignee
Inventor
Key dates
| Filing date | Jan 17, 1984 |
| Grant date | Feb 26, 1985 |
| Priority date | — |
| Expiry date | Jan 17, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/563
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply circuit includes a high current chopper type regulator and a low current linear regulator feeding a common regulated supply rail. The linear regulator regulates to a higher voltage than the chopper regulator, but has a characteristic such that its output voltage falls below that of the chopper regulator when current in excess of a predetermined level is drawn. Thus, at low current levels, the chopper regulator is inactive and the linear regulator supplies a ripple-free output. At high current levels, on the other hand, the chopper regulator becomes effective to provide a stable output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.