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  1. ENRICOMIGLIORE

    Flyback: a varistor between EARTH and the secondary's GROUND

    Hi, I have to design an isolated flyback power supply of 22 W. At the moment I'm testing the performances of my competitor's power supply. I noticed that on this power supply there is a Zinc Disc Varistor (56 Volt) between EARTH and the GROUND of the secondary. This is quite surprinsig for...

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