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Thread: Brake Check Light

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  1. 07-08-2015 10:35 PM #20
    AQUAR
    AQUAR is offline
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    @ WytWun

    Very true.
    In fact the 33 uF capacitor only measured 16 uF and explains why the lamp on duration was very short (when it was still working).
    I replaced it with a 44 uF capacitor and it stays on long enough to be noticed (about 5 sec).

    Not sure why the other capacitor is there, but guessing it provides a low impedance bypass for voltage spikes (prevent false triggering of the PUT?).
    Last edited by AQUAR; 07-08-2015 at 10:40 PM.
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