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In Reply to: RE: High Performance Regulator ICs posted by used-hifi on January 29, 2017 at 09:45:35
You can buy a Rod Coleman regulator for $40. How low noise is it? Is this the 'ticket' for 26 tubes?
Follow Ups:
What would happen, if you blew off all the complexity, and just used a simple second L/C section, as I do in all my B+ filters ? L1/C1/L2/C2.
How might that sound, if it were well implemented,m parts and design-wise ???
Jeff Medwin
Simple LC section using a 60mH choke and 44000uF capacitor results on .00 AC ripple in 9 volt bias. A 8 ohm resistor & 100uF cap at the filament is less than .001 AC ripple.
I do not have a AC ripple spec for a quiet running 26 tube, but .001 ripple is not good enough.
I have NOT used rod's regulators for the 26 tube but I will say when done right the output hum will be Uv level!
Lawrence
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