The circuit diagram of preamplifier made by MC1709 serves the electric motor drive

Published:2011/6/1 22:33:00 Author:leo | Keyword: The circuit diagram of preamplifier made by MC1709 serves the electric motor drive, MC1709 | From:SeekIC

What Picture 1 shows is a kind of preamplifier made by MC1709 serves the electric motor drive circuit. In this circuit, the voltage plus of symbolic amplifier circuit is 39 dB. The circuit is made up of MC1709 and so on. The bandwidth of amplifier is 41 KHz which is decided by R5 and C2.Its single-ended output passes through the phase position of VT2 and is divided into two signals with discrepancy of 180 degree angle. This process will drive sh-pull (PP) output amplifier.



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