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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.

Since this shouldn't have been an issue from the software, I've contacted the guy I bought the laptop from to see if he can help. It was a struggle to make the Excel program do what you showed in the

V2.22 VER 76, it is under the Program files (x86) folder

PSUD was updated in 2019 to move storage of the rectifiers to the AppData area instead of the Program Files area. This was mandated by security changes on Windows 10 which prevented writing data to

This is a system issue. The folder is located on the system disc that needs admin rights to write data. You can either run the program as an administrator (right-click on the icon and choose this

What operating system / version / build are you using? It's in Help | About box Regards, Duncan [email protected]> wrote: -- Duncan Munro www.duncanamps.com

I followed your tutorial on YouTube on getting the proper specs (Vlaw,Vfac,Dres) to add a rectifier. I modified one of the files with my info, and when I went to save it, it told me I didn't have

This of this as "lead resistance". Actually in electrolytics it is more like "paste resistance", the semi-damp electrolyte between the electrodes. In foil caps, foil resistance too. If this series

Forgot I can measure ESR, the ESR readings are at 120, 1K, and 10KHz, should use the lowest resistance?

This is for series resistance. All capacitors have this, and it contributes to reducing the current that can flow in and out of a capacitor and therefore its effectiveness. It's a necessity to make

Thanks! I'll check that out. One more question, the capacitors have a resistance field. The start up schematic has 2 ohms here. Shouldn't this be in the megaohms for a cap? I don't understand where

There's some resources which should help with this. You will need a data sheet (that's a must) but once you have this, the process is quite simple; there's a YouTube video which describes the process

Any possibility of having you add a GBL06 and GBU806 rectifiers to the list? I really don't understand how to find the "vlaw / vfac / and dres" fields.

ps: Don't forget the primary resistance as this forms part of the source impedance. Regards, Duncan