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Posted 16 February 2005 - 04:25 PM

Does anybody know if with 4N35 we can make a zero crossing detector?
Which circuit is the best to make a zero crossing detector?

#2 marke


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Posted 17 February 2005 - 08:59 AM

You certainly can make a zero crossing detector that uses a 4N35 for isolation. The circuitry depends on the accuracy you require and the voltage levels that you are working with. I would typically use additional gain/comparator circuitry for low level signals and drive that into the opto.

Best regards,

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