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Thread: TEC undervolting charts

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  1. #14
    Registered User
    Join Date
    Aug 2007
    Location
    detroit
    Posts
    1

    thermal pile

    Quote Originally Posted by alexio View Post
    The Imax is a bit wrong I think.

    For example the Imax of the 80W pelt at 5v is 2.48A. Then it uses 12.4w at 5v? that must be wrong. I don't think your way to calculate the Imax is correct.
    Not only is a TEC a heater/cooler, it also is a thermal pile generator. The generator counters the TEC effect. Increasing the internal resistance, there by lowering the current drawn by the TEC. I could get nowhere near the current spec for a 169w TEC, with my set up.
    44C on the hot side and
    -1.0C on the cold side.
    only air loading the cold side.
    ambient temp at 25C
    slot A dual fan heat sink on the hot side.
    I was pulling less than 7 amps
    at 13.4 volts
    Last edited by raypsi; 08-19-2007 at 06:47 PM. Reason: more info

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