PSPICE: Clean V-ripple after the LC filter

Discussion in 'Electronics Resources' started by Ziin13, Mar 7, 2013.

  1. Ziin13

    Thread Starter New Member

    Mar 4, 2013
    I am building the circuit that need a source of 170V DC using the wall-plug in voltage.

    I have a very straight circuit which has a source of 170V AC, 60Hz. I am have a rectifier, and LC filter which have L: 100uH, and C: 2200u. There is still quite big V ripple there after the filter.

    And of course, I can't find out the 170V output voltage regulator.

    Any recommendation to help me get a clean DC output voltage?

  2. crutschow


    Mar 14, 2008
    How did you pick those LC values? 100μH has a very low impedance at 60Hz (or 120Hz for a full-wave rectifier) and will do little to reduce the ripple. Inductors used for line frequency filtering typically have an inductance of 1H or more.

    Is this a half-wave circuit with one rectifier? Those have a high ripple factor. A full-wave bridge rectifier would be much better.