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Thread: Jobo Resistor

  1. #31
    polyglot's Avatar
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    I haven't a CPE2, but looking at your photo, pins 4-5 are clearly the coil. 1, 2 and 3 will be the contacts and it will be single-pole double-throw (SPDT).

    Looking near the hole near the middle, there's a 4-pin device that looks like a WO4 bridge to me, with the top-left and bottom-right pins being the rectified outputs. Note that they go to relay contacts 1 and 2 (and a big capacitor on the left acting as filter/snubber), so I would assume that they are the NO and NC contacts. That leaves 3 as being the C (common) contact.

    That's my guess, anyway.

  2. #32

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    Thank you, someone gave me the reference of the relay http://www.datasheetcatalog.org/data...61/61740_1.pdf
    The coil on 3,5 common 4 end contacts 1,2.
    On my board, I found the original failure, it is the thermistor PTC975 it break down at too low intensity (1,5 A for 3A nominal)

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