Negative ions generator

Discussion in 'General Electronics Chat' started by atferrari, Oct 15, 2014.

  1. atferrari

    Thread Starter AAC Fanatic!

    Jan 6, 2004
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    Negative ions generator

    Asuming the circuit is correct, I cannot grasp how it works.

    Could anyone explain it?

    Thanks for any help.
     
  2. wayneh

    Expert

    Sep 9, 2010
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    The 555 sends a square wave to the MOSFET, switching a high current to the step up transformer. A large negative pulse voltage appears at the wire point, allegedly generating negative ions by shedding and attaching electrons to them.
     
  3. atferrari

    Thread Starter AAC Fanatic!

    Jan 6, 2004
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    Is the circled terminal of the transformer returned properly? To +12V?
     
  4. GopherT

    AAC Fanatic!

    Nov 23, 2012
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    The arrow isn't current flow or a diode. It just indicates that that wire eventually finds itself a +12v terminal to connect to.
     
  5. wayneh

    Expert

    Sep 9, 2010
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    I think so. The big negative pulse gets referenced to +12V instead of 0V, but that's trivial compared to the voltage involved. I'm not really sure why it's not referenced to ground, but it shouldn't make much difference.
     
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