11-18-2014, 06:22 AM
If you go the diode dropper route I would use a larger amperage diode, and use a pair of them, the difference in cost between a 1 amp and a 3 amp diode is pennies. Now the reason that i suggest using a pair in series is in case one of the diodes decides to short out, it will only drop an extra .7 volts but will prevent the full line voltage from ending up across your tube filament string.
Regards
Arran
Regards
Arran