3 Sep
2008
3 Sep
'08
11:56 a.m.
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.
--
Will