Audio Level Meter


Posted on Feb 6, 2014

This is audio meter that can be monitored using a small panel meter with this circuit built from discrete components. The audio level meter circuit has a flat frequency response from about 20Hz to well over 50Khz. Input sensitivity is 100mV for a full scale deflection on a 100uA meter. Built on two common emitter amplifiers, the first stage has a


Audio Level Meter
Click here to download the full size of the above Circuit.

preset resistor which may be adjusted for a FSD. The last stage is biased to operate at roughly half the supply voltage for maximum ac voltage swing. Audio frequencies are passed through the 10u dc blocking capacitor and the full wave bridge rectifier converts the signal to a varying dc voltage.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Simple Microphone Mixer
    Half-flash-adc
    Car clock temp voltmeter
    rs232 to rs485 circuit
    900 KC FLAW DETECTOR
    External circuit configuration CPU clock circuit



    Top