‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Tuesday, October 20, 2020 12:49 PM, neutron51493 <neutron51493@...> wrote:
Hello
A life-long Apple user I now have a MacBook Pro (which, incidentally, I really do not like) running Catalina 10.15.7 (latest incarnation) on which I have attempted to download PSUD2 on a number of occasions ~ and, as with the reports of other potential users, with little inner standing…
Rather stupidly I’ve come to realize I was attempting to enlist its help to replace?5ц3с?rectifier valves in a "standard Sun Audio 300B type CLC PSU ~ with Vishay Hexfreds (HFA16PB120HN3) which are 16A 1200Vr types purchased some years ago... and I'm completely out of my depth.
Today I did manage to override the OSX security warnings (not a recognised developer etc) and managed at least a "look-see" - and to my horror found I would probably fry similar? 1200Vr IXYS diodes. ?Do we?really?need 1800Vr (!?) I couldn’t answer that because,
no matter what I did subsequently the “security" would?not?allow PSUD2 to run ~ it came up with another error message about some rectifier or other not being found :-
Utilisling the programme is certainly not without difficulties and as others have suggested some more guidance would be very helpful. ?Otherwise this old Chemistry kid with a very old A level Physics experience and a new soldering station will need to copy established designs - e.g. Dr Jac van Der Walle’s ~ or see expensive things go up in frightening smoke - which is I suppose entirely the reason why such guidance isn’t provided for novices such as myself?
Have I answered my own question as far as that aspect is concerned ?
Siobhan
