Keith G wrote:

V1 = 0.317 V / 10.2 ohms (10R2 ??)
V2 = 0.303 V / 10.0
V3 = 0.322 V / 10.2
V4 = 0.318 V / 10.5

If you adjust the tweakers so that the voltages measure as follows...

V1 = 0.3162V
V2 = 0.31V
V3 = 0.3162V
V4 = 0.3255V

....that should give each valve an Ia of 31mA. I'm assuming that the 31mA on
the valve label indicates what the anode current should be for all valves.
(Do they all have the sticker, and do they all have the same value for Ia?)


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Wally
www.artbywally.com
www.wally.myby.co.uk