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#8
12-19-2016, 10:46 AM
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Some inline gun tubes (trinitrons are inline) have a single grid or a single cathode.
There is a difference between video (AC) drive and DC bias. You can drive a tube with AC video signal at grid and/or cathode (the CRT don't care) and things will work fine. DC bias (which is the test condition on a CRT tester) is what your CRT elements will be at if your video stage is not operating (and what the DC voltages on the tube will hover near when driven with video). DC bias is the relative DC voltage of the cathode and grid....assuming plate (which may be the focus electrode or similar when on the tester) much more positive than cathode.
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Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 
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