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Zero Cross Detector Circuits

Circuit yields Accurate Absolute Values:  07/05/01 EDN-Design Ideas / PDF contains multiple circuits - scroll to find this circuit.
Self Powered Sine to Square Wave Converter:  Converts sine to square waves without a power-source Useful as a test instrument for audio purposes
Time tag impulses with zero crossing circuit:  01/24/2002  EDN - Design Ideas / A "constant-fraction discriminator" usually performs the time-tagging of impulsive events, which have a peaking time of the signal amplitude. The implementation of this technique requires a delay in the input signal of approximately the same amount as the signal's rise time. You can attain this delay by using a coaxial cable of an appropriate length. .
Unique discrete zero-crossing detector:  04/05/99 Electronic Design - Ideas for Design / A zero-crossing detector delivers an output pulse that synchronizes other circuitry to the transitions through zero volts of a sinusoidal source for both polarity excursions. This detector, which. . .

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