Power drive circuit with 180°output phase differencebetween normal and opposite phase

Published:2011/7/25 3:08:00 Author:Lucas | Keyword: Power drive circuit , 180°, output phase difference , normal , opposite phase | From:SeekIC

If the common emitter current of VTl and the two transistors in the first differential amplifier circuit composed of A2 chip are equal, then the following equation is effective, Av2 is the open-loop gain of A2. If the open-loop gain of A1 is AV1, then the positive phase output U01, feedback factor, input voltage can be gotten by the following equations. Comparing with the equations (2-2) and (2-3), if A (V1) = A (V2), the U. 1/Ui and U. 2/Ui have the same frequency characters. For any frequency, the normal-phase output U. l and the inverted output U. 2 have 180 °phase difference.



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