|
Hi Komet, how are you?
Don't try to measure the voltage on the damper's plate, with this kind of circuit, there is a pulsed waveform on 6W4's pin 5 that easily exceed 1Kv at radio frequency, so no wonder you fried your meter! Also, your misshap with the Fivre 6W4 is quite expected, H-K insulation on this tube is rated only 450VDC and this tube is quite fragile per-se. If you want to stay "relaxed", you can always use a 6AX4 damper, a MUCH better tube all around
Cheers
Giulio
|