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DIY variable voltage power supply

Discussion in 'Electronic Basics' started by AC/DCdude17, Aug 9, 2004.

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  1. AC/DCdude17

    AC/DCdude17 Guest

    X-No-Archive: Yes

    The typical variable voltage power supply consist of a voltage control
    IC and multiple high power transisors such as 2N3055.

    The problem with this design is that it's highly inefficient and
    requires large power supply for the input.

    I'd like a design that can use a 12A ish 24V switch mode power supply
    for input and output stage made of PWM voltage controller much like CPU
    voltage controller that can drive external MOSFETs.

    Is there such thing as one chip controller that will drive MOSFETs and
    change output voltage from potentiometer input?
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