21 Oct
2005
21 Oct
'05
2:08 p.m.
>>>> "woodelf" == woodelf
<bfranchuk at jetnet.ab.ca> writes:
woodelf> I suspect the the power supplies have the most snake
woodelf> oil. 90% of all the power supplies I have seen looking for a
woodelf> good valve amp schematic have heavy filtering but very
woodelf> little regulation. My 115 volt ac is about 123 volts out
woodelf> here.
That doesn't make the power supplies snake oily. Tubes are generally
not picky about the supply voltage, so no regulation is needed for
good performance. There are a few exceptions: precision oscillators,
and traveling wave tubes. But your basic tetrode or pentode amp is
quite uncritical; regulators would just be unnecessary bulk.
paul