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  • Users: Electromotive
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  1. Electromotive

    Collimator light illuminance

    Hi! DxDave, Sorry for such a late reaction. I joined eng-tips recently. I hope you may find some help from my answer. Switching-ON current of the collimator lamp is usually reduced by using a power resistor in series with the lamp for less than one second after switching ON.This is done to...

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