Power supply monitoring circuitry for computer system
US4951171A · kind A · utility
109Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/061
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer system having a power supply monitoring arrangement employs a number of comparators for detecting whether or not various supply voltages produced by the power supply for use in the computer are above or below a reference level, or whether an overcurrent condition exists. These detected conditions are used to determine whether or not the power supply should be shut down, or during power-up to determine whether the initialization routine can be started by the CPU. Delays are included to prevent an undervoltage condition from indicating shut down of the power supply during power-up.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.