Versatile input circuit for sensing the status of a voltage...

Details Versatile input circuit for sensing the status of a voltage... Versatile input circuit for sensing the status of a voltage...

G - Physics

06

F

354/236

G06F 13/20 (2006.01) G01R 19/165 (2006.01)

Patent

CA 1215179

11 ABSTRACT OF THE DISCLOSURE An electronic signal conditioning circuit for inputting a wide range of sensed voltage signals of various AC and DC waveforms to a central processing unit of a computer or microprocessor including voltage limiting means such as a zener diode in parallel with a photodiode of an opto coupler and a minimum voltage level activating means for insuring a minimum voltage level is present before activation of the opto coupler. The signal con- ditioning circuit further includes comparator means for processing the output signal of the opto coupler and rectifying means for rectifying any AC sensing means signal input to the signal conditioning circuit.

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