Fan operating status sensing circuit

Details Fan operating status sensing circuit Fan operating status sensing circuit

1989-01-18

1990-12-11

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of electrically operated apparatus

324510, 340648, G01R 3102

Patent

active

049773755

ABSTRACT:
A direct current fan's status is monitored electronically using a current monitoring circuit. Normally, when a fan is running it exhibits a pulsating current input. The resulting alternating current signal is monitored via the current monitoring circuit to detect whether the fan is running or not.

REFERENCES:
patent: 4506218 (1985-03-01), Brown et al.

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