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

    Zero voltage switch temperature control
    Single-op-amp-clock
    Power MOSFET Bridge Rectifier
    mcus for online ups
    Simple Transistor Amplifier Circuit Schematic and Explanation
    Clarinet Vacuum Tube Linestage
    Telemetering Beacon For VUSAT
    Intro to Intan Amplifier Chips
    Negative Voltage Hot Swap Controllers in SOT-23
    quartz clock timebase
    RF amplifier coupling



    Top