low power switching regulator


Posted on Feb 4, 2014

This circuit is a simple battery-powered switching regulator provides 5V out from a 9V source with 80% efficiency and 50-mA output capability. When Q1 is oon, its collector voltage rises, forcing current trhough the iinductor. The output voltage rises, causing A1`s output to rise. Q1 cutts off and the output drops low enough for A1 to turn Q1.


low power switching regulator
Click here to download the full size of the above Circuit.

The 1 uF capacitor ensures low battery impedance at high frequencies, preventing sag during switching. See schematic diagram below :




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    high voltage ac calibrator circuit
    microphone Sennheiser MKH 415 T
    Rolling Shutter Motor Control
    Magnetic proximity switch
    broadcast band rf amplifier
    How To Build A Simple Alarm Control Keypad
    555 direct reading frequency meter schematic



    Top