Electronics Scotty, if we reversed the polarity...

Discussion in 'Modding' started by curme, 9 Apr 2004.

  1. curme

    curme Minimodder

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    I'm delving into overclocking and had to retire my Coolemaster JetMaster for a SP-94. Now I have to figure out what to do with my groovy JetMaster, since it won't fit on the SP-94. I could jury-rig something, but I don't want to take a chance with my new chip, an AMD M-2500, overclcoked, getting too hot. I'm going to use a Delta fan on my HS. I was thinking of using the JetMaster on my blowhole, but the only problem is, that with this set-up, the JetMaster sucks air into the case. Is there a way to, I don't know, reverse the polarity, and make it spin in the opposite direction? So that it blows air out?
    [​IMG]
    Maybe I could use it somewhere else? Any ideas?
     
  2. cpemma

    cpemma Ecky thump

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    WhyPick1 explained here why you can't just swap the wires over (Similar Threads rox :rock: ) . I've heard of people taking fans to bits & turning the magnet round, which should reverse direction, but on a Panaflo I took to bits it was well & truly stuck in so YMMV. :wallbash:
     
  3. curme

    curme Minimodder

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    Jeez! The ONE time I don't use the search and I make myself look like an idiot! :duh: I've become everything I hate! :waah:
     
  4. Hazer

    Hazer In time,you too will be relixalated

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    There is way too much information on bit-tech now for that search engine to ALWAYS find your answers correctly. Never be afraid to ask.

    What some people hate are those questions that are asked pretty much everyday, with the answer only 2 threads down............
     
  5. star882

    star882 What's a Dremel?

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    The last computer fan I took apart used a 3-phase induction motor and an inverter board. IIRC, if you reverse two of the three wires, the motor will turn the other way.
    The problem with the blades working well in only one direction is still there, though. :wallbash:
    Just flip the fan, it's the quickest way.
     
  6. Smilodon

    Smilodon The Antagonist

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    Just switch around on the "firing order" of the electromegnets inside the motor... it should work...

    star is almost right... you have to swith around 4 of the wires (if the motor doesn't have common ground)


    hehe.. i haven't seen anyone asking about a laptopscreen for a while now... :)
     
  7. cpemma

    cpemma Ecky thump

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    He's right on the mains 3-phasers I've connected, just switch any 2 over. By Sod's Law, the motor always spins the wrong way when first connected. :wallbash:
     

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