Quote:
Originally Posted by Alex KL-1
If focus adjustment are great at near top, you can add a some Mohms resistor from "cold" wiper from potentiometer to ground (in series with potentiometer), reducing the loading, and making the focus adjusment less coarse.
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The actual voltage at the 530V boost line measures at about 560VDC at the source. The focus looks best at something like 400VDC.