Voltage converter with a self-oscillating control circuit
US6963496B2 · kind B2 · utility
45Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Nov 8, 2005 |
| Priority date | — |
| Expiry date | Jun 27, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/3385
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage converter including a transformer having a primary winding connected in series with a switch for cutting-up a supply voltage and having a secondary winding associated with a capacitor providing a D.C. low voltage, and a self-oscillating control circuit of the switch for detecting the end of the demagnetization of an auxiliary winding of the transformer, to turn the switch on, and for detecting the current in the on-state switch to turn it off when this current reaches a reference point. The reference point is made variable according to the voltage across the auxiliary winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.