Overvoltage protected de-boost regulator
US4169241A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1978 |
| Grant date | Sep 25, 1979 |
| Priority date | — |
| Expiry date | Feb 6, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/62
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic regulator produces a regulated direct voltage less than the raw direct voltage input. The load on the regulated output is the primary winding of the horizontal output transformer of a television horizontal deflection circuit. A secondary winding of the output transformer is connected in series with the source of raw direct voltage. An energy storage capacitor is coupled across the secondary winding, and charged therefrom by a gated rectifier. The regulated output voltage is taken across the raw direct voltage source and capacitor. An overvoltage protection circuit for protecting against fault conditions is provided. The protection circuit includes a diode coupled between the regulated output voltage terminal and the raw input voltage terminal. The diode is normally back-biased and becomes conductive when a fault condition makes the regulated voltage exceed the raw input voltage. A resistor in series with the secondary winding controls circulating currents in the event of an overvoltage fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.