12V to 220V 60Hz inverter

Discussion in 'Homework Help' started by brahms, May 9, 2014.

  1. brahms

    Thread Starter Member

    May 9, 2014
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    [​IMG]


    Is there something wrong in this circuit? Got it from my friend.
    It didn't work.. maybe i had some error in my pcb layout.
    And how can i tell how much power is there in the circuit? Can it support 2 to 3 loads?

    I'm new here and of electronics world. =)
    forgive me if i can't understand things and for asking many questions
     
  2. R!f@@

    AAC Fanatic!

    Apr 2, 2009
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    What circuit ?
     
  3. brahms

    Thread Starter Member

    May 9, 2014
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    Isn't the picture shown above?
     
  4. R!f@@

    AAC Fanatic!

    Apr 2, 2009
    8,754
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    What picture ?
     
  5. brahms

    Thread Starter Member

    May 9, 2014
    32
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    [​IMG]

    This one.
     
  6. THE_RB

    AAC Fanatic!

    Feb 11, 2008
    5,435
    1,305
    The first stage is a 2-tran multivibrator.
    The second stage is a symmetrical push-pull driver.
    And the last stage is the push-pull power stage with BD139's driving 2N3055s.

    It's a very ugly circuit, you can replace those first two massive complex stages with a simple 4047 IC;

    [​IMG]

    Same thing, but much simpler! :)
     
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