Server preamplifier circuit uses the parallel op-amp

Published:2011/6/19 19:50:00 Author:TaoXi | Keyword: Server, preamplifier, parallel op-amp | From:SeekIC

The server preamplifier circuit which uses the parallel op-amp is as shown in the figure, this circuit supplies the differential output to the 115V, 60Hz servo motor power amplifier. One op-amp is reversal-phase connected, another op-amp is in-phase connected to form the complementary output circuit. The voltage gain of this circuit is 40dB, and the single regulator tube supplies the power to this circuit. This circuit uses the depth DC negative feedback, so it has good DC stabilit. The bandwidth is 60KHZ, the input is drived by the 90°shifting phase.



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