High voltage DC relays
US5081558A · kind A · utility
233Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | Feb 2, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/542
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A high voltage DC relay with arc suppression in which a MOSFET in parallel with the relay contacts is turned on during contact break mode by the controlled discharge of a capacitor between the MOSFET source and drain through a constant current diode to suppress arcing. A sensing coil positioned near the relay coil generates current used to charge the charging capacitor during the make contact mode to suppress arcing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.