Help - Dual Half bridge Isolation

Discussion in 'The Projects Forum' started by weetkee, May 23, 2009.

  1. weetkee

    Thread Starter New Member

    Apr 30, 2009
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    Hello,

    I'm trying to build a T.E.N.S. Circuit that was featured in a Silicon Chip magazine issue a couple of years back. It uses an MC3406? DC-DC converter supplying IR2155 Half bridge driver to drive two IR 610 Mosfets for high side and low side. The circuit is for only one channel I wanted to add another. Can I just add another Half bridge driver and pair of mosfets? and will they be isolated from each other? or do I need to use a transformer, so that the channels don't have a common ground?

    I appreciate any help I can get. Thanks
     
  2. weetkee

    Thread Starter New Member

    Apr 30, 2009
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    0
    bump......
     
  3. SgtWookie

    Expert

    Jul 17, 2007
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    Just a quick verbal explanation isn't quite enough information.

    Post the circuit.
     
  4. weetkee

    Thread Starter New Member

    Apr 30, 2009
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    My apologies... here is the circuit.
     
  5. Wendy

    Moderator

    Mar 24, 2008
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    What is a T.E.N.S unit?

    [​IMG]
     
  6. weetkee

    Thread Starter New Member

    Apr 30, 2009
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    0
    T.E.N.S. Is short for trans-cutaneous electrical nerve stimulation. It helps to alleviate pain by over stimulation of pain receptors in the affected area so that they can't transmit a pain signal to the brain.
     
  7. Wendy

    Moderator

    Mar 24, 2008
    20,766
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    OK, thanks. I'll let folks a bit more familiar with MOSFETs answer this one.
     
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