Electronic device with two power supply modes
US5793123A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1995 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Jun 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/061
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosure concerns an electronic device, for example a radio-alarm clock, that can be powered from the mains power supply or from batteries and can operate without interruption when changing from one of these power supplies to the other. It comprises a support connected to the mains and a mobile part that can be placed in electrical contact with said support and that includes at least one electronic circuit requiring power. This electronic circuit is powered from the mains via a first diode when said mobile part is placed in electrical contact with said support, and is powered by at least one battery via a second diode when said mobile part is removed from said support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.