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#1
05-10-2024, 04:58 PM
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OK I didn't read your post well enough. Separate winding on power xfmr. Dumb senior moment! DOH.
 Parasitic capacitance would still be a problem though.
Last edited by old_coot88; 05-10-2024 at 05:35 PM. 
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#2
05-10-2024, 07:57 PM
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The CRT filament usually shared its power transformer winding with the 6BK4 high voltage regulator tube. There was usually a .1 cap to ground from the semi- floating filament circuit. When needing an isolation transformer because of a heater to cathode short in one of the guns, removing that .1 did help with the smearing issue sometimes.
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