> Anode current can be metered in the negative hv circuitry.
you bet it can! and then the ammeter is close to ground. this is a
good thing, but it requires a bit of thinking about *NOT* grounding
filter capacitor cans, etc.
a really great way is to build the supply with B+ and B- both
isolated from ground, then put the meter in the connection from
ground to B-
there are scads of examples of this in handbooks for the last several
George T. Daughters, K6GT
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