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  1. Ralph Dratman

    How to test a Bi-Directional Triode Thyristor

    This thread reminds me of browsing TV repair anecdotes and tricks in Popular Electronics circa 1963, when I was 12 years old. The shop lingo was exotic. "Back porch", "color burst", "horizontal sweep", "video amplifier", "AGC" and the like all stimulated my imagination, as tales of pirates or...
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