I am still studying a way to cook my 3-500Z which have not been hot for at least 15 years. The idea is to cook at high current with a low anode voltage, without HF.
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The maximum rating of the cathode current is not clear in the Eimac specifications. There are examples with a current of 0.4 A (for one tube).
·???????? Does this current (0.4 A) seem acceptable to you?
·???????? Can we go beyond that?
This requires a grid voltage of around +30/+40V 100 mA. So 4 W and the tube is given for 20W
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I am considering using, temporarily, another transformer, with a lower secondary voltage, upstream of the doubler.
