This looked Interesting.

https://www.diyaudio.com/forums/multi...ml#post1033586

I'll have to research that.

https://www.diyaudio.com/forums/parts...ml#post2330818

This speaks for itself:
https://www.diyaudio.com/forums/multi...ml#post2318365

https://www.diyaudio.com/forums/analo...ml#post2258073

This looks cool.

https://www.diyaudio.com/forums/parts...-resistor.html

Motorola used one on their first cell phone.

Chauser eleptical low pass with nulls at 4.5k and 9k iirc.

Now I am wondering if I could create a "passive line level" with this, avoiding inductors.

Here is a link to a design article:
https://electronicdesign.com/article/...sband6366.aspx

Here is a circuit I like.
Not excessive voltage drop, no absolute expectations on voltage or current.

https://aquinaudio.webspace.virginmed...act_choke.html

A link to the discussion in the Tube Forum

https://www.diyaudio.com/forums/tubes...ml#post2173626

My brother gave me a Pass B1 board.
Now that he has his working I thought I would look at mine.

I am going to use this space to record all of the links and tricks. Some of the links will be very basic.

https://www.national.com/ds/LM/LM317.pdf

https://optimus.meleeisland.net/downl...s/mc78xxct.pdf

https://www.quasarelectronics.com/kit...c-kit/3060.pdf


https://www.tubecad.com/2007/06/blog0109.htm

https://www.tubecad.com/2007/07/blog0113.htm

https://www.tubecad.com/2008/11/blog0151.htm

https://www.wenzel.com/documents/finesse.html

https://www.borbelyaudio.com/psshunt.asp

I found a great comment in post https://www.diyaudio.com/forums/tubes...3a-driver.html post #10.

Very few details were given, but it caught my imagination.

https://www.diyaudio.com/forums/const...ml#post1987690

These are answers I need.

Thanks.

This thread has some good, solid information and very little bravado.

https://www.diyaudio.com/forums/tubes...th-effort.html

Special Mention to:
janneman
Tubelab
kevinkr
Allen Wright
Bas Horneman
SY

For their interesting contributions.

IMHO, There are several ways to make an adequate Power supply. And several ways to totally botch the job.

In the 1980's, I was totally against using solid state in a tube preamp. However, this was more about not using low voltage devices in high voltage circuits than anything else.
Now that high voltage transistors are available this is not a major consideration.
My first tube amp is going to be a platform to play with some of the discussions.
I want to try unregulated and regulated power supplies. I will probably start out with unregulated choke input supplies.

It...