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Hi, apologies if this has been asked before, to model capacitors in series I assume you model one capacitor at half the value. For example two 220uF caps in series would be modelled as one 110uf Cap.

Only if your VIC-20 runs Windows 7/8/10/11 in 64 bit... :) Regards, Duncan

I'm still using a VIC-20. Is it compatible?

Hi Marc, have added you to the list. Regards, Duncan

On the other end of the scale is myself. I’ve toyed with the program a bit but I’m a “nube” to electronics. I’m in the middle of building a couple of tube projects that will need new

" I was holding back to be sure every eager body had a chance" Hi Paul, you've been a MASSIVE contributor to this group in terms of technical input to me as the designer, and in assistance/advice to

Hi, just wanted to say, very happy to see this development and how close it looks to be getting. I'm not savvy enough to beta, but am excited about the potential to my toolbox. Since 1985 I've beta

I was holding back to be sure every eager body had a chance. But yes I would like to see, comment, and suggest. I have much experience in beta-busting. I have done power supplies with ARRL Handbook

Designing a couple supplies atm and love to try version 3! Best Regards. Mark Nelson

Hi Duncan, yes! I'm interested in this! I constantly use PSUD2 so I can compare with the new one and let you know. Best regards, Fabio

Count me in. I was a programmer for over 40 years and electronic engineer... if that's worth anything. On the flip side, I' out of town for 10 days starting today - Ian

Hi all, I'm still working on PSUD3 but thought I would pass it out in Beta form for comment to a small number of participants to get feedback on any potential major flaws. I'd like to keep the initial

Good tip. The files ended up here due to a restriction on hosting certain files on duncanamps.com when the hosting moved provider about 3 years ago.? I think I've got round this now so should be

It might be worth pointing out on the front page that people need to join the group to see the file section and thus download the file. I too couldn't find it, even after read your message here,

Hi, Downloads are from the files area, I have updated the welcome message to add the link to the area. If you're on the PSUD groups.io web page, it's on the left hand side bar -

I was not able to find where to download the psud2 program , any help welcome

Great work Duncan!!!! Brian in Seattle

Hi DrRick, There isn't a tutorial as such, there is a help file entry called *Modelling your first power supply* which will get you started. For more specific topics, you can ask questions here. Also

Thanks for the response. Sorry I the delay, My health is degenerating. Peace, DrRick PS my son built me a window machine so I can use PSUD. Are there any tutorials to speed up my learning curve?

Defiantly a screw up on my side. Got the admin straightened out and now its fine. I now have these rectifiers in the list.