Offline-converter


Posted on Feb 16, 2013

This nonisolated, unregulated, minimum component converter fills the void between low-power zener regulation and the higher power use of a 60-Hz input transformer. It is intended for use where)`er a nonisolated supply can be used safely. The circuit operates~by conducting only during the low-voltage portion of the rectified sine wave.


Offline-converter
Click here to download the full size of the above Circuit.

Rl and D2 charge Cl to approximately 20 V, which is maintained by Ql. This voltage is applied to the gate of Q2, turning it on. When the rectified output voltage exceeds the zener voltage ofD4, Ql turns on, shunting the gate of Q2 to ground, turning it off.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Sleep Mode Circuit Circuit
    infra red ir led flood light circuit
    flyback inverter for fluorescent lamp 15
    why doesnt this circuit oscillate
    28 LED Clock Timer
    Synchronous Camera Flash Trigger Using IGBT
    DECL Documentation
    HOCKEY TENNIS HANDBALL
    Drum Solenoid Interface for Tap-Tempo Metronome
    FM IF amplifier circuit composed of ceramic filters
    Based LMD18245 bipolar stepper motor control circuit diagram
    Simple design with a constant K-type high-frequency low-pass LC filter
    Wheat planter particles clogging circuit
    Blackout emergency lights circuit 3



    Top