Recent content by Neurorad

  1. Neurorad

    Advice for temp controlled fan

    Thanks for the tip. I have a decent Hakko but have never had to deal with SMD. Good thing I ordered plenty. :)
  2. Neurorad

    Advice for temp controlled fan

    Thanks again guys. I ordered a couple of dozen MIC833 from microchipdirect, if it works I'll make a few of these, and if paying the partial reel fee and shipping already, why not. Price just .80 each. I think I'm headed in the right direction with small pots in voltage dividers to high and...
  3. Neurorad

    Advice for temp controlled fan

    I'd have to look to make sure, I think its less than .5A... 200mA I think. More to read about, thanks!
  4. Neurorad

    Advice for temp controlled fan

    Thanks, you guys did exactly what I was hoping - point me in a general good direction. I think I can sort out a circuit from here, test it, and will post back when (!) it doesn't work. :) I was doing a little reading on hysteresis in a single comparator. Seemed complicated. Your post...
  5. Neurorad

    Advice for temp controlled fan

    Thanks, I'll check them out. I read a quick overview of the LM311... looked pretty straightforward but without adjustable hysteresis. Someone somewhere on a site I was reading went theough the math and stated the baked in hysteresis was about 0.25V. Seems like that might work, but as the...
  6. Neurorad

    Advice for temp controlled fan

    I think I'm heading in that direction. Was doing a bit of reading about the LM311 to see if that would fit the bill, trying to remember what all this means, and see if I could sort out a circuit. Thanks. Maybe someone else can help fill in the specifics.
  7. Neurorad

    Advice for temp controlled fan

    All my EE classes from ME degree are two decades and a different career away, looking for advice on simplest solution. Working on an audio amplifier project using an integrated class D board designed for passive cooling. The board has a nice complement of self monitoring and protection...
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