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Originally Posted by SwizzyMan
Cant tell if this is a HOT cathode current meter or what. I dont think it is since the meter only has a range of 10 MA...
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That meter is one milliamp full-scale. So it's probably wired to measure the HV regulator current. If it's measuring H.out cathode current, it'll have a low value shunt across it.
Quote:
...and normal HOT cathode current is at least 100MA.
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Normal H.out cathode is closer to 200 ma.