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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Thinking out loud about HF filament supplies posted by Lynn Olson on March 24, 2003 at 18:43:10:
Reading this with interest, I'm just trying to understand the reasons why AC heating sounds best.What do people think - is it :
(i) AC is better than DC , because, on average, there is a more constant level of bias across the length of the plates, than there is with DC ?
or
(ii) All the simple methods of rectifying and/or regulating a DC supply use solid-state devices that put high-frequency noise into the system ?I seem to remember an article in Sound Practices , about the Chimera Labs 211 amp, using some clever details on a DC power supply for +5/-5V that they reported as a major improvement. Anyone read this and care to elaborate ?
Mark
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- Also thinking out loud - MarkJ 03/25/0305:48:10 03/25/03 (0)
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