455 kHz IF WITH AF COMPRESSOR


Posted on Feb 6, 2014

Combination of IF amplifier, audio compressor, tunable audio filter, and audio output system operates from single supply. Compressor and filter each use N5558V dual opamps or equivalent units. Tuning range of filter is about 500 to 2000 Hz. IF input goes directly to pin 2 of LM373H. Use coupling capacitor to prevent shorting pin 2 to ground and dam


455 kHz IF WITH AF COMPRESSOR
Click here to download the full size of the above Circuit.

aging IC. -R. Megirian, Design ldeasfor Miniature Communications Receivers, Ham Radio, April 1976, p 18-25.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Flood Sensor with 12F683
    I/O monitor program for AVR
    Ni-cad charger
    Lvdt-driver-demodulator
    Arduino Vocal Effects Box
    Basic Oscillator (Tone Generator) At 1.8 KHz -alarm circuits
    morning light activated alarm circuit
    Bicycle Speedometer With Hub Dynamo
    Bicycle Radio easy and cheap to build (April 1940)
    Low power monostable circuit diagram



    Top