3 Sep
2008
3 Sep
'08
1:45 p.m.
William Donzelli wrote:
Ya, it would be more authentic but the filament supply would then weigh 20 lbs
instead of 2.
Can't get
much cheaper than effectively free for a well regulated, high current DC power supply
using a modified PC power supply that isn't otherwise being used. Plus, the idea of
using tubes with 5V filaments instead of 6.3/12.6V reduces the competition with typical
audio tube customers and makes the use of a high-current 5VDC supply possible.
For a few bucks, you could get a 5 Volt transformer with a decent
current rating of 10 Amps, and not have to worry about the number of
tubes you need to feed for a while.
Filament transformers come in many voltages other than 6.3.