Quote:
Originally Posted by murphyv310
A 100uf cap charged with 90v will easily blow the filaments in a '96 series valve.
|
That's what I did early this year - 100µF HT electrolytic, set switched off, no bleed resistor, a bit later a moment of carelessness, bright flash from the DK96!
Stupid thing is that I had planned to add a bleed resistor - just not done it yet.
The LT was decoupled with 600µF of capacitance, so at the instant of the HT/LT short, I would have got 100/700 x 90V or 12.8V on the LT line.
Other valves survived.