Firing circuit for an electric valve
US3961204A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1974 |
| Grant date | Jun 1, 1976 |
| Priority date | — |
| Expiry date | Nov 29, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/096
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a circuit arrangement for firing an electric valve, particularly a thyristor, with a pulse capacitor which can be charged from the a-c voltage at the anode-cathode path of the electric valve by means of an external resistor and can be discharged by means of a contactless switching device for firing the electric valve by way of its control path. To increase the firing performance, there is provided in parallel to the anode-cathode path of the electric valve a series circuit comprising an external resistor and the primary winding of a transformer the secondary winding of which is connected to the pulse capacitor by way of a rectifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.