Electronic switched-mode power supply for supplying power to an accumulator
US5671129A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1995 |
| Grant date | Sep 23, 1997 |
| Priority date | — |
| Expiry date | Aug 4, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2207/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention is directed to an electronic switched-mode power supply for supplying power to an accumulator (61), comprising a self-oscillating flyback converter having a transformer (50), a switching transistor (1) with an emitter resistor (22) and a feedback circuit (11, 27). A control circuit (St) inhibits conduction of the switching transistor (1) when the switching voltage at the accumulator (61) has reached a predetermined upper level (A). A switching arrangement (SE) lowers the upper switching voltage (A) to a lower switching voltage (B) when, with the switched-mode power supply in the pulsed mode, the ratio of the duration of oscillation pauses to the duration of oscillation bursts exceeds a specified magnitude.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.