Methods and apparatus for improved latching relay driver
US9076616B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Mar 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/226
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus provide for at least one relay with contacts transitioning from: an OFF state to an ON state in response to an ON-pulse of current through a coil in a first direction; and the ON state to the OFF state in response to an OFF-pulse of current through the coil in a second, opposite direction. A driver circuit operates to produce the ON-pulse through the coil of the relay in response to a control signal commanding the ON-state of the contacts; produce the OFF-pulse of current through the coil of the relay in response to a control signal commanding the OFF-state of the contacts; and produce the OFF-pulse of current through the coil of the relay in response to a loss of operating potential across the pair of operating power nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.