Page 1 of 2 12 LastLast
Results 1 to 10 of 19

Thread: TEC help!

  1. #1
    Join Date
    Dec 2006
    Location
    Essex, UK
    Posts
    8,648

    Default TEC help!

    ok im using robin die4chill driver and tec.

    im using the below setup. but why is it after 1 mins my block with diode in gets hot???



    Eat Sleep Lase Repeat

  2. #2
    Join Date
    Jul 2008
    Location
    Rotterdam, Netherlands
    Posts
    789

    Default

    1- Did you have te polarity right? (cold side up warm side down)
    2- Is the die4cill board working properly?
    3- Do you have the diode running when it gets hot or are you testing without he diode running? (maybe the tec hasn't enough capacity to fight the heat of the diode)

  3. #3
    Join Date
    Dec 2006
    Location
    Essex, UK
    Posts
    8,648

    Default

    yeah cold side is up and it works.

    no the diode is not running im just testing
    Eat Sleep Lase Repeat

  4. #4
    Join Date
    Jul 2008
    Location
    Rotterdam, Netherlands
    Posts
    789

    Default

    it almost sounds like the alluminium base plate isn't despersing heat from the tec fast enough...

    Is there a good termal connection between them?
    Did you use paste or thermalgrease/glue?

    (try testing the tec setup without the die4chill board, if it still getting hot... there is a termal connection problem)

  5. #5
    Join Date
    Dec 2006
    Location
    Pflugerville, TX, USA
    Posts
    1,977

    Default

    Does it get cold then hot? If so, I would probably guess that you aren't pulling the heat away fast enough. That heatsink arrangement you have seems questionable to me.

  6. #6
    Join Date
    May 2007
    Location
    1 hr from everything in SoCal
    Posts
    2,753

    Default TEC

    Are you running the TEC straight off of a DC source? Are you sure you're limiting the current to the TEC? If you run a TEC with no current limiting, they will get very hot on both sides!
    If you're the smartest person in the room, then you're in the wrong room.

  7. #7
    Join Date
    Dec 2006
    Location
    Netherlands
    Posts
    983

    Default

    Quote Originally Posted by andy_con View Post
    ok im using robin die4chill driver and tec.

    im using the below setup. but why is it after 1 mins my block with diode in gets hot???

    Does it get hot gradually or does it first turn cold and then hot? In the latter case the feedback loop is unstable...

  8. #8
    Join Date
    Dec 2006
    Location
    Essex, UK
    Posts
    8,648

    Default

    gets hot over time.

    could be that the alum block is no good to taking the heat
    Eat Sleep Lase Repeat

  9. #9
    Join Date
    Jul 2008
    Location
    Rotterdam, Netherlands
    Posts
    789

    Default

    andy...........

    Quote Originally Posted by Anthony View Post
    Is there a good termal connection between them?
    Did you use paste or thermalgrease/glue?

  10. #10
    Join Date
    Dec 2006
    Location
    Essex, UK
    Posts
    8,648

    Default

    yeah using a thermal sticky pad thing from maplin
    Eat Sleep Lase Repeat

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •