AC/DC converter having isolating transformer with three secondary windings
US8456869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2008 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Dec 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33507
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An AC/DC converter has at its input a rectifier circuit connected in series with a primary winding of an isolating transformer and with a chopper switch (T1) connected to a pulse width modulation control circuit. The isolating transformer has a first secondary winding wound in the same direction as the primary winding and connected to an output line of the converter via a diode (D4). The output line is connected to an output capacitor (Cout), wherein the isolating transformer has a second secondary winding that is wound in the opposite direction to the primary winding and that is connected directly to the output line via a diode (D2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.