This is circuit that can be used to convert a low amplitude 40 KHz signal into a clean square wave signal. This circuit is call wide band zero cross detector. This is the figure of the circuit.
This circuit will work with inputs as small as 5mv peak-to-peak or as large as 3 volts peak to peak. The input frequency can range from a few kilohertz to about 150 KHz. This circuit is work with based on LM393. [Circuit source: Dave Johnson].
This circuit will work with inputs as small as 5mv peak-to-peak or as large as 3 volts peak to peak. The input frequency can range from a few kilohertz to about 150 KHz. This circuit is work with based on LM393. [Circuit source: Dave Johnson].
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