Preamplifier for magnetic phono cartridges schematics


Posted on Feb 5, 2014

Circuit IC1 provides a do amplification of 40 dB, which drops to about 20 dB when the frequency rises above 500 Hz. To minimize the (resistor) noise and the load of the op amp at higher frequencies, the value of R3 is a compromise. The associated polystyrene capacitor, C2, should have a tolerance of 1 to 2%. To raise the 2-mV output of the dynamic


Preamplifier for magnetic phono cartridges schematics
Click here to download the full size of the above Circuit.

pick-up to line level at 1 kHz, linear amplifier IC2 has been added. This stage has a gain of 22 dB, so a signal of 250 mV is available at its output.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    IR auto digital thermostat
    Optical schmitt trigger
    Popular Electronics Magazine April 1955
    two speed contactor dc motor controller
    4017 led pattern flasher
    HR Diemen



    Top