Quasi push-pull single switch current-fed fly-back converter
US5122946A · kind A · utility
10Cited by
11References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 21, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Jun 21, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A quasi push-pull single switch current-fed fly-back converter is used as the power supply for the magnetron of a microwave oven. A voltage doubler output circuit has a high impedance. A small magnetic circuit includes a transformer having a primary winding in series with an IGBT switch means and in series with an inductor. A single diode is connected in series with the inductor. A secondary winding is connected to the voltage doubler. A tertiary winding is coupled to a pulse width modification, i.e. for controlling the conductor sequence of the IGBT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.