Today made significant progress on the new version of the 26 pre-amp. Only bits outstanding are the CCS modules part of the HT supply on board. Tested glow valves, output transformers and filament circuits…
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26 pre-amp build near complete!
well done! looks very nice! 🙂 🙂 🙂
where the transformer? individual chassis?
Thanks!
Yes. I have an existing 26/01a pre-amp which has a separate HT (AZ1 + CLCLC) and LT supplies (18V raw).
AZ1 – what is it?
CLCLC – very low ripple, but from the beginning СL – poor form of current and many spectral harmonics. A better start LC, then we will always have a smooth sine wave power and is exempt from the spectral noise from the rectifier (diode). Try it, it’s easy to see in the oscilloscope.
Will drop you an email, it’s easier…