> On Oct 13, 2023, at 1:07 PM, Martin Bishop
> <mjd.bis...@emeritus-solutions.com> wrote:
>
> The valve audio afficionados / suppliers also offer both wisdom and
> components, e.g.
>
> https://skillbank.co.uk/psu/ and many other sites / blogs
>
> https://www.amazon.co.uk/Designing-Power-Supplies-Amplifiers-Second/dp/0956154549
>
> https://shop.elsevier.com/books/valve-amplifiers/jones/978-0-08-096640-3 and
> many other titles
>
> https://www.ampmaker.com/shop/vcb-vvr-voltage-control-kit/ and numerous
> other kits for worked examples
>
> https://www.thatsaudio.co.uk/product-category/valve-amplifier-transformers-chokes/amplifier-valves-accessories/power-transformers/
I wonder if makers of ham radio focused products are likely to be more
economical. Tube audio has some cult aspects to it, and may have pricing to
match. (Monster Cable comes to mind as an analogous case.)
> Regulation is typically effected by a high voltage N-fet or similar device
> see e.g.
> - https://www.microchip.com/en-us/product/lnd150# etc etc
> - https://www.ti.com/lit/pdf/snva020 etc etc
Yes, that works if you need regulated power. You can also use tubes to
regulate (see the 1967 Handbook on archive.org). That assumes regulation is
even needed, which is not often the case for tube circuits. Also, a simple
shunt regulator is often adequate, either a classic neon tube or a Zener diode
(or a couple in series if you need a higher voltage).
I haven't worked with tube computer or logic circuits, but tube circuits in
transmitters or receivers are not normally regulated, with the exception of LC
oscillators. For those, a typical design would just use a neon tube shunt
regulator.
paul
