Ive been messing round with a couple of PL508 / 17KW6 'Frame Sweep' tubes in P-P UL, Cathode-Bias, 5.6K a-a...
The max screen volts is listed as 275 volts, Va at 400.
Its currently running with Cathode-bias, with cathode volts at 30 and Screen at 285 ish...and anode at 310, all measured to '0' VDC,--sounds quite nice but no real proper testing or listening done yet
So, Vk, of 30, from 285 = 255V...Is this correct with regards the Max G2 volts measurement, or should I be measuring to '0' VDC...?
The valves show no signs of any distress or 'overheating' even after 6 hours....
The max screen volts is listed as 275 volts, Va at 400.
Its currently running with Cathode-bias, with cathode volts at 30 and Screen at 285 ish...and anode at 310, all measured to '0' VDC,--sounds quite nice but no real proper testing or listening done yet
So, Vk, of 30, from 285 = 255V...Is this correct with regards the Max G2 volts measurement, or should I be measuring to '0' VDC...?
The valves show no signs of any distress or 'overheating' even after 6 hours....