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pls help me .......want detailed working....???

Discussion in 'General Electronics Discussion' started by electroguy, Mar 13, 2011.

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  1. electroguy

    electroguy

    1
    0
    Mar 13, 2011
    pls help me to find detailed working of the circuit below..........

    it is a circuit used to control the speed of the motor that drive wiper.....?

    pls help me ...how the circuit is achieved the speed control
     

    Attached Files:

  2. Resqueline

    Resqueline

    2,848
    2
    Jul 31, 2009
    What is it about it you want/need to know?
    There's a push button, a debounce circuit (IC1), a decade counter (IC2), and 10 speed trimmers, but in the end it's IC3 (555) that performs some kind of PWM.
    Anyway, it's a hideously clumsy & difficult circuit to set up & operate. Who's going to push a button 9 times (driving a car) to step the wiper speed down one notch?
     
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