Active peak voltage-limiting clamp circuit
US7633777B2 · kind B2 · utility
4Cited by
2References
9Claims
0Family size
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Inventor
Key dates
| Filing date | Jan 16, 2007 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Dec 6, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses an active peak voltage-limiting clamp circuit, which comprises a primary switch unit and a secondary switch unit that are used to control the coil current of a transformer, wherein a signal acquisition unit, a zero-point decision unit, a feedback unit and a pulse control unit are used to control the turn-on periods of the primary switch unit and the secondary switch unit; thus, the turn-on period of the primary switch unit is separated from the turn-on period of the secondary switch unit, and a buffer interval for the transient voltage variation is formed therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.