Device for varying an electrode voltage for a cathode-ray tube
US4596949A · kind A · utility
3Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1984 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Nov 1, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2038/423
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for varying an electrode voltage of a CRT of a color TV includes a novel potentiometer arrangement for adjusting the aforesaid electrode voltage. In known voltage-generating devices the electrode voltage is adjusted by a special potentiometer which can handle several kilovolts. According to the invention, the potentiometer track is constituted by a resistive layer (2) situated inside the interior of the output-voltage feedthrough (10) and the wiper is constituted by the end portion of the high-voltage cable (9) which is inserted into a tubular feedthrough portion and which can slide therein in order to adjust the voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.