Power supply monitoring circuitry for computer system

Details Power supply monitoring circuitry for computer system Power supply monitoring circuitry for computer system

1989-05-11

1990-08-21

Jennings, Derek S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific voltage responsive fault sensor

361 91, 361 92, 361 93, 390663, 390 66, 390664, H02H 324

Patent

active

049511718

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.

REFERENCES:
patent: 4600962 (1986-02-01), Bliehall
patent: 4638175 (1987-01-01), Bradford et al.
patent: 4772980 (1988-09-01), Curtis et al.

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