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AC current to logic output

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wisely77

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I would like to design a circuit that can detect AC current and giving logic output. A logic high for AC current detected and logic low for no AC source is available.

thanks.

wisely
 

flatulent

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safety first

Safety is the first rule in these things. You should use a Hall Effect Sensor type of noncontact sensing device. This will give you an AC output voltage. Transform this into DC with a full wave op amp rectifier circuit. Then follow this by a low pass filter which can be just an RC network. Then put this signal to the input of a comparator.
 

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