Car Amplifiers » amplifier diagram http://mycaramplifiers.com Car amplifiers circuits, tips, news and reviews Fri, 20 Jan 2012 00:16:28 +0000 en hourly 1 http://wordpress.org/?v=3.1 100W dumping amplifier circuit http://mycaramplifiers.com/100w-dumping-amplifier-circuit-42.html http://mycaramplifiers.com/100w-dumping-amplifier-circuit-42.html#comments Thu, 22 Dec 2011 16:00:26 +0000 amplifier http://mycaramplifiers.com/?p=42
  • Headphones amplifier circuit This headphones amplifier circuit can deliver up to 1W on...
    • ]]>     This dumping current amplifier particularity of this assembly consists of the fact that by introducing the four pasive components R2, R3, L and C, all harmful influences originating in the nonlinear behavior of the final stage are removed. It has 1 IC (741 or LF357), and 6 transistors, the final stage in equiped with TIP142 and TIP147 transistors.

    The amplifier circuit presented here works after the current dumping principle, in class B operation and it delivers 99W on 4Ω speakers. Distortion coefficient is 0.006% at 1 kHz and 60W. If you have a device to measure properly, then the C3 can be replaced by a trimer of 22 pF and adjusted it to obtain a minimum rate distortion.
    IC 741 may be replaced with a faster, for example LF357 when R4 and R7 are adjusted at the idle current of the IC, so that the final stage transistors are on the point to stop leading any idle current.


    Dumping amplifier circuit diagram

    dumping amplifier 100w

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    1. Headphones amplifier circuit This headphones amplifier circuit can deliver up to 1W on...

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