Electric relay control circuit
US7023683B1 · kind B1 · utility
14Cited by
19References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2002 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Mar 19, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H9/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit and method for controlling two or more electric relays, wherein at least one of the relays are rated to handle a higher voltage level while at least one of the relays are rated to handle a lower voltage level. A controller selectively activates the relays such that the higher voltage rated relay(s) open before but close after the lower voltage rated relay(s) within the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.