The synchronous wave detection circuit of polarity switch

Published:2011/7/15 21:41:00 Author:Borg | Keyword: synchronous, wave detection circuit | From:SeekIC

This is the synchronous wave detection circuit of polarity switch. In the circuit, the impedance switch and buffer circuit can be formed by A1; A2 forms the phase inverting and non-inverting amplifier circuit; when VT2 is conducting, the non-inverting phase of A2is connected with the ground and becomes a -1 amplifier circuit; when VT2 is blocked, the input signal is added to the non-inverting input terminal of A2, as the impedance of A2 is very high, so the inverting and non-inverting terminal have the same LEV, and the inverting terminal is moving with it, therefore, VT2 works as the follower whose magnifying time is once.



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