Power processing reset system for a microprocessor responding to sudden deregulation of a voltage
US4433390A · kind A · utility
58Cited by
15References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1981 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Jul 30, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F1/30
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power processing circuit operatively and electrically connected to one regulated supply (16) voltage responds through a comparator means (24) and a monitor means (26) to generate a reset pulse (84) to a microprocessor (28) whenever the regulated supply voltage starts to go out of regulation. The comparator means functions both as a control circuit to maintain regulation as well as a comparator to determine when the base current of the pass transistor (52) begins to saturate the pass transistor. The monitor means (26) responding to this condition generates a minimum time length reset pulse to the microprocessor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.