Peak detect and hold


Posted on Nov 25, 2012

If the voltage at the input exceeds the voltage on the capacitor, then the output of the 741 goes positive, the diode conducts, and the capacitor is charged up to the input voltage-forward voltage drop of diode. When the voltage at the input is less than that on the capacitor, the output of the 741 goes negative, and the diode cuts off


Peak detect and hold
Click here to download the full size of the above Circuit.

To prevent the capacitor from discharging through the input resistance of the next stage, a high input impedance buffer stage (IC2) is used. The circuit can be reset by means of a FET or similar high impedance device connected across the capacitor.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Lead Acid Battery Charger II
    Scr Capacitor Turn-Off Circuit
    9400 Selling Leads 9400 Datasheet PDF
    Echo Chamber
    M66T Melody Generator diagram
    video amplifier circuit
    2 x 22W-BTL Car Audio Amplifier DA1553CQ Schematic Diagram
    ultrasonic transmitter circuit
    supercapacitor usb light
    Two-Zone Alarm



    Top