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In the Forum: Melquiades Amplifier
In the Thread: Staxquiades project
Post Subject: Some answersPosted by N-set on: 9/22/2012
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Paul,
I know the capacitance -- this is an analog of impedance of ordinary speakers.
I also compare to known serious designs, like mentioned Blue Hawaii.
The multiple taps on PS iron is to accomodate different output tubes.
The "bypassed transformers" are in fact PP chokes. At this stage, the one loading the driver
is a off-shelf steel Lundahl. The output one is more complicated: I have huge amorphous cores
whic I plan to use. Why amorphous? And why people use amorphous? "Speed, clarity, blahblahblah"
Here I need a fast, high freq. core because I need as tight coupling between both halves
of the choke as possible.
Why not HV Zener? It's said to be noiser and the noise is nasty (Olson writes about that on his pages) and this diode
sits in the driver grid. VR in turn has a few mV of a broadband noise.
Cheers,
Nset
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