Power source switching circuit
US8242637B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 3, 2009 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Nov 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/068
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power source switching circuit includes a main source input terminal, an auxiliary source input terminal, a control circuit, a first switch, a second switch, and an output terminal. The control circuit is connected to the main source input terminal and the auxiliary source input terminal. The first switch is connected to the main source input terminal and the control circuit. The second switch is connected to the auxiliary source input terminal and the control circuit. The output terminal is connected to the first switch and the second switch. When the main source input terminal is at high level, the auxiliary source input terminal remains high level, the first switch is turned on, and the second switch is turned off by the control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.