Fan operating status sensing circuit

Details Fan operating status sensing circuit Fan operating status sensing circuit

H - Electricity

02

H

340/148, 324/67,

H02H 7/20 (2006.01) G01R 19/15 (2006.01) G01R 31/02 (2006.01) H04B 17/02 (2006.01)

Patent

CA 1294330

FAN OPERATING STATUS SENSING CIRCUIT Abstract of the Disclosure A direct current muffin fan's status is monitored electronically using a current monitoring circuit. Normally, when a muffin 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. - i -

593817

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