Start-up power supply for a television receiver
US3947632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1975 |
| Grant date | Mar 30, 1976 |
| Priority date | — |
| Expiry date | Jul 23, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/29
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A degaussing winding adapted to be coupled to a first source of varying amplitude alternating current potential develops a degaussing flux in the proximity of a television picture tube during a degaussing interval. A secondary winding coupled to the degaussing winding supplies current to a power supply network to develop a first direct current potential during the degaussing interval. A further aspect includes means coupling the first direct current potential to a horizontal oscillator to enable start-up of the horizontal oscillator which provides for the development of a second direct current potential by the horizontal deflection system. The second direct current potential is coupled to the horizontal oscillator and sustains operation of the horizontal oscillator after the start-up interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.