simple 2 watt small switching power

Posted on Feb 4, 2014

In this small switching power supply, a Schmitt trigger oscillator is used to drive a switching transistor that supplies current to a small inductor. Energy is stored in the inductor while the transistor is on, and released into the load circuit when the transistor switches off. The output voltage is dependent on the load resistance and is limited by a zener diode that stops the oscillator when the voltage

simple 2 watt small switching power
Click here to download the full size of the above Circuit.

reaches about 14 volts. Higher or lower voltages can be obtained by adjusting the voltage divider that feeds the zener diode. The efficiency is about 80% using a high Q inductor.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    Telephone in-use indicator
    Audio Phone Ring Generator Using Switching Supply
    how do sim card works on mobile phones
    vhf ampand transmiter schematic
    Radiation Sensor Circuit
    VGA to TV converter
    Hot-air Rework Station
    Rd flashing light string circuit
    Bidirectional thyristor AC contactor interface circuit