Voltage booster for CRT electrode supply
US5111121A · kind A · utility
4Cited by
5References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1991 |
| Grant date | May 5, 1992 |
| Priority date | — |
| Expiry date | Jun 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N3/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A boost capacitor has a first terminal that is coupled to a retrace capacitor of a horizontal deflection circuit. A diode couples a trace voltage in an S-shaping capacitor to the boost capacitor to charge the boost capacitor during trace. A second diode rectifies a voltage that is equal to the sum of the boost capacitor voltage and a retrace voltage developed in the retrace capacitor for generating a screen grid voltage for a cathode ray tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.