Relay apparatus
US6636410B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2001 |
| Grant date | Oct 21, 2003 |
| Priority date | — |
| Expiry date | Jan 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/005
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electrical energy is charged to a dielectric by using an energizing unit. A relay apparatus includes a first electromagnetic relay and a second electromagnetic relay. One light-emitting transistor is turned on by self-maintaining the second electromagnetic relay and, then, one light-receiving transistor is turned on. Another light-emitting diode is turned on by discharging the dielectric and another light-receiving transistor is turned on. A power voltage is applied to a base of a transistor for start, and the transistor for start is turned on. The first electromagnetic relay is self-maintained, an interval between output terminals is energized, and a load is driven. Accordingly, the relay apparatus can be miniaturized with a safety function and with low costs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.