Re: Free Standardised Valves
David,
Just comparing the graphs for 6AU5GT No 1 and No 5 (where you and I have both tested the same valves with the same testers) it occurs to me that whilst my VCM163 follows your DC tester line pretty well on the graph for 6AU5GT No 1 there is a variation between them between grid volts 27 to 30 on the graph for 6AU5GT No 5.
It almost looks like there is a dip from the line of the smooth curve for the DC tester on the graph for 6AU5GT No 5. Is the DC tester without flaws or could something have happened to cause it to give some slightly duff readings in that zone?
regards, Nick
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