The phase wave detection composed of 74HC4053

Published:2011/7/17 20:36:00 Author:Borg | Keyword: phase wave, detection circuit | From:SeekIC

This is the phase wave detection circuit composed of 74HC4053. the circuit consists of the computing amplifier TLC072 and the analog switch 74HC4053, but the conducting resistance of the analog switch changes with the temperature and the power supply voltage. In the circuit, the output of the analog switch 74HC4053 is connected with the voltage follower composed of A3, so the conducting resistance doesn’t affect the output. If the impedance of the input signal is very low, then A1 is needless. Although the 74HC analog switch can’t be assure of “breading first, connecting second”, if 74HC4053 makes both A1 and A2 short, it won’t problematic.



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