Power supply switching circuit
US4754160A · kind A · utility
41Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1985 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Apr 19, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0018
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply switching circuit is disclosed which provides for automatically switching an electrical circuit load from a main power source to an auxiliary power source, yet maintains the two power sources isolated from each other. The power supply switching circuit is readily integrated with its electrical load to form a monolithic integrated circuit. A pair of MOSFETs provides alternate connections of the load to the respective power sources. The circuit effectively connects the gate and source of the appropriate MOSFET across the available power source and thus assures the maximum turn-on voltage is applied to the MOSFET.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.