Power Supply for Standalone Preamp


Posted on Feb 7, 2014

If you`re just building a dual stand-alone preamplifier (as for, say, a stereo magnetic phono preamp), your power supply requirements will of course be greatly reduced. Figure 5A shows a simple supply using readily-available 12 volt, 1/2 ampere transformers (units capable of 1 ampere preferred for continuous operation). The 12 volt output from the first transformer is used to power


Power Supply for Standalone Preamp
Click here to download the full size of the above Circuit.

the filaments, and is also fed to the second transformer connected as a step-up device to provide about 110 VAC. This supplies a voltage tripler circuit that provides the 400+ volts required for the preamplifier circuitry.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Water-level sensing and control
    5W 7Mhz Rf Power Amplifier Circuit
    Simple Circuit 12V to 120V DC DC Converter
    Mesa Mark IIc+ Preamplifier
    Analog Simulation Tools Aid Digital-Control-Circuit Designers
    radio station blocker circuit
    Digital Temperature monitor with LM5 and AT89C51
    Liquid-Crystal Display (LCD) Tester
    radio remote control RC using DTMF circuit diagram
    PC Case USB LCD
    Voice remote control switch circuit
    IN8510 and power motor driver circuit composed of DAC7520
    Press light switch double circuit 9



    Top