Electronic circuit with power drain control
US4908523A · kind A · utility
85Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1988 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Apr 4, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power switching circuit is described for supplying power to a radio pager which must be continuously powered from either a main or backup battery. The main battery voltage is monitored and at appropriate levels as its value falls, selected functions of the pager are eliminated and switch over to the backup battery is made to keep alive essential functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.