a tri-level with a single supply

Discussion in 'The Projects Forum' started by raffter, Feb 27, 2011.

  1. raffter

    Thread Starter Active Member

    Feb 28, 2008
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    0
    @Sgt.

    nice circuit there(on page2) .... very simple with the triwave gen and comparator! cool! and single supply too...

    now I have also a similar project dealing with bi-level signal output

    this could be off-topic but I was wondering how I would go about this , a tri-level with a single supply... is it possible?
     
  2. SgtWookie

    Expert

    Jul 17, 2007
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    Raffter,
    Yes, you're off topic. I suggest that you start a new one, and if you feel the circuit may be applicable to your situation, then include a link to this thread.

    Also, include more details about what you want the input and output signals to look like, as I'm not quite understanding your "tri-level with single supply" statement.
     
  3. raffter

    Thread Starter Active Member

    Feb 28, 2008
    113
    0
    Sgt.

    I have done the circuit with fullbridge output (4 mosfets/2 IR2110) and I noticed the AC output swing is NOT balanced... I mean there is more negative value swing than the positive swing of output.. how Do I combat this problem? why does THIS happen?

    monopolar supply both pwm and fullbridge..
     
  4. SgtWookie

    Expert

    Jul 17, 2007
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    You are hijacking Magnet18's thread.

    A Moderator will hopefully move posts beginning #58 to a new thread; the below link references the hijacked thread:
    http://forum.allaboutcircuits.com/showthread.php?t=49467

    Meanwhile, in your 1st post in the hijack referred to a circuit that Magnet18 modified and posted on page 2, which I later indicated wouldn't work properly. Apparently, you took build that circuit, and added more stuff too it, and now you're wondering why it is not working properly.

    You need to post a link (or better yet, attach an image) of the circuit that you built.
     
  5. bertus

    Administrator

    Apr 5, 2008
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  6. SgtWookie

    Expert

    Jul 17, 2007
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    Well, it looks like you're trying to make a DC-AC inverter using a PWM'ed triangle wave as an input.

    None of the schematics in the magnet18 thread will be stable enough for such use. They were just a simple way to get something going with magnet18's project.

    The circuit I posted in #8 is based on Ron_H's circuit, but the PWM out won't have fast enough rise/fall times for input to your IR2110, nor go low enough.

    I am completely out of time for projects such as your undertaking.

    Perhaps someone else will help you.
     
    Last edited: Mar 6, 2011
  7. SgtWookie

    Expert

    Jul 17, 2007
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    <snip>
    Posted in error
     
    Last edited: Mar 6, 2011
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