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…and the question ‘where can [I] find a guide,’ or very similar, has been asked since at least 2006… except, all we get is avoidance and/or ‘nice’ obfuscations…

Personally, I have come to the conclusion that PSUD(x) is useless (to myself) as it stands. And… that is a great shame on tts author? How many of us wish it were otherwise?

I found it intuitive and useful from the first click, but then I worked 45 years as an electrical engineer...? I think you need a bit more background first.? I'd suggest you Google "Vacuum tube amplifier power supply design", read a few of the articles.? If none of them make any sense, you might try the Navy training course on vacuum tubes and power supplies - search "NEETS module 6" and it'll pop up.? If you've never used the power tools in a metal shop, don't start without some training - you can make a mess out of a job easily, even if you manage to keep both eyes and all of your fingers.? Some tools are like that.

There's a guide in the help file which explains how to use the software and a video on how to make up your own custom rectifiers. Every on-topic question I get on here gets answered by me personally, so nobody is left trying to figure out how things work.

I'm struggling to see why someone would continue to operate a "useless" piece of software between 2006 and 2024 (a total of 18 years!), also you've been a member on here since 2020 and you've been provided with help on every question you've posted.

Congratulations on becoming the first person I've had to block from posting on this forum.

Regards,
Duncan