Discharge circuit for rapidly eliminating charge trapped in a capacitor voltage divider used for monitoring high voltage AC
US4437134A · kind A · utility
12Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Nov 5, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The voltage divider comprises a capacitor column (11) for dropping nearly all of the high voltage and a base capacitance (10) connected in series therewith so that a small voltage appears there across. Said discharge circuit comprises a diode rectifier bridge (15, 16, 17, 18) connected by its AC terminals in parallel with the base capacitance, and two identical windings (20, 21, 22, 23) connected in parallel respectively with two of the diodes (15, 16) of the bridge, both of said winding-shunted diodes being connected to the same one of the AC terminals of the diode bridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.