Device for detecting momentary cutoff of AC power source

Details Device for detecting momentary cutoff of AC power source Device for detecting momentary cutoff of AC power source

1984-04-13

1986-09-16

Miller, Stanley D.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Identifying or correcting improper counter operation

377 39, G05B 103

Patent

active

046126570

ABSTRACT:
A device for detecting a momentary cutoff of an AC power source which is used with a data processing apparatus or the like. The device determines that a momentary cutoff has occurred in the AC power source when an actual rotation speed of a motor energized by the AC power source for rotation is lower than a predetermined rotation speed.

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patent: 4245150 (1981-01-01), Driscoll et al.
patent: 4276468 (1981-06-01), Nagamoto et al.
patent: 4323976 (1982-04-01), Radaelli et al.
patent: 4420814 (1983-12-01), Arikawa et al.
patent: 4468796 (1984-09-01), Suga
patent: 4473786 (1984-09-01), Miyashita et al.
patent: 4521894 (1985-06-01), Moffat

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