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Rectifier parameter question

neutron51493
 

Duncan,
Hi and thanks. My unfamiliarity with my new MacBook has been overcome with your assistance.? PSUD2 (build 75) runs.? Hurray!? However, I cannot yet achieve usable results.? Mathematics is not my issue _ I have for example calculated the Vlaws and Vfacs for several non-listed diodes (but not confident to upload them to the data base.)?? I can still exceed rectifier max voltages!? Partly (maybe) because the programme as downloaded appears to allow only one rectifier block at a time e.g. i do not know how to simulate a CLC filter let alone display chained sections as shown elsewhere on the net.
I'd have several 'rookie' questions to ask to make any further progress - but how much are you up for tutoring cats in the use of your programme?
Siobhan



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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Sunday, October 25, 2020 10:37 AM, Duncan Munro <duncan@...> wrote:

Hi,

I've had a chance to look at this on the Mac, and have upgraded to latest Catalina.

The first time you try to run PSUD2, it will ask for access to the Documents folder. It needs this access to store the rectifiers and example files. If you say "No" at any stage, the access will be blocked and the error messages you show in your post will be displayed. MacOS won't ask you again, once you've said No, that's it, there is no second offer....

There's a way to retrospectively fix it by going into Security and Privacy settings which you can do by pressing Apple menu > System Preferences > Security and Privacy > Privacy tab. Scroll the left panel down until you get to a blue folder icon with the title "Files and Folders". Click it and the right hand panel will now show a list of apps and their access privileges. Scroll down to PSUD and make sure the box is ticked.

Hopefully there's a screen dump attached to show the screen I'm talking about. (It shows unchecked which wont work and that may be how yours looks, check the box and it try a reinstall of the .DMG file, should get things going again)

The following Apple article contains a bit more information about application access ->?

Hope this helps, please let me know if it fixes the issue.

Regards,
Duncan
 

Let me know what the rectifier model is and I'll try and work out some parameters, and explain how I got to them. The CLC can ring to give high voltages, LC can spike quite badly, either of these can trip the warning for rectifier max voltages.

Regards,
Duncan

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