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broken links? databases which do exist and other woes

neutron51493
 
Edited

Since foolishly embarking on the now long-deleted (Walton) published SE design (I was and am on a very restricted budget...) over a decade ago only to find some of the major (i.e. very expensive!) components (Plitron chokes) were no longer available, I turned to the internet for help to redesign and found, among really very few other resources... PSUD2.? Hey! I thought with this help I would possibly ditch the valve rectifier and go with silicon. But that was then...

I have never really been able to get to grips with PSUD2 (I have build 77) and having an intel MacBook didn't help either until some kind soul showed me how to insert filter sections.? Yeah basic stuff - as others have sagely observed: when you don't know - you don't know.? What to look out for has always been the issue: e.g. just what influence do those asymmetic chopped off sinusoidal 100mS current traces in C1 really have?? Can I (should I?) get rid of them?? So, I sequentially change C1 or C2... Cn or L1... Ln - and observe whether that makes a 'good' diffierence and then I look at what happens out to 10,000mS after a reporting delay of x ~ but what does all that mean?? The variables are dynamic and there seems no way of knowing what is good enough.

I now find I can not use PSUD to model the silicon diodes I had intended (Hexfreds as it happens) ~ since the rectifier list does indeed appear MIA and groups host shows no such thing as a database... therefore I could not find the recent information on the recently group post concerning another contibutor's Hexfreds anywhere. ? As a former Chemist a mathematical method for enumerating Vfac and Vlaw such as simultaneous logarithmic equations has not been the issue for me. - no, what I am struggling to say is really how to use PSUD.? A cursory glance at more modern PSU schema (such as by Dipl. Ing. Jac van de Walle () and using serially connected choke for improved common mode rejection - shows a plethera of different approaches but I have not attempted to model these on PSUD.

Please do not "get me wrong,"? PSUD is clearly a very GREAT project one which has clearly taken a great deal of time and specialist expertise - I only wish there was as great a guide to its use.
 

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Diodes now have their own individual files in the program folder

e.g. C:\Program Files (x86)\PSU Designer II\rectifiers

example HFA25PB60.rect file - may be different on a mac

<?xml version="1.0" encoding="UTF-8"?>
<rectifier>
?? ?<name>HFA25PB60</name>
?? ?<description>fast 25A soft-recovery diode</description>
?? ?<version>211</version>
?? ?<creationdate>2024-02-25 21:39:00</creationdate>
?? ?<type>SS</type>
?? ?<vlaw>2.11</vlaw>
?? ?<vfac>4.5</vfac>
?? ?<dres>0.01</dres>
?? ?<vpiv>2000</vpiv>
?? ?<ipks>225</ipks>
?? ?<ipkr>100</ipkr>
</rectifier>
- Ian
On 6/12/2024 05:25, neutron51493 via groups.io wrote:

[Edited Message Follows]
[Reason: which do not exist]

Since foolishly embarking on the now long-deleted (Walton) published SE design (I was and am on a very restricted budget...) over a decade ago only to find some of the major (i.e. very expensive!) components (Plitron chokes) were no longer available, I turned to the internet for help to redesign and found, among really very few other resources... PSUD2.? Hey! I thought with this help I would possibly ditch the valve rectifier and go with silicon. But that was then...

I have never really been able to get to grips with PSUD2 (I have build 77) and having an intel MacBook didn't help either until some kind soul showed me how to insert filter sections.? Yeah basic stuff - as others have sagely observed: when you don't know - you don't know.? What to look out for has always been the issue: e.g. just what influence do those asymmetic chopped off sinusoidal 100mS current traces in C1 really have?? Can I (should I?) get rid of them?? So, I sequentially change C1 or C2... Cn or L1... Ln - and observe whether that makes a 'good' diffierence and then I look at what happens out to 10,000mS after a reporting delay of x ~ but what does all that mean?? The variables are dynamic and there seems no way of knowing what is good enough.

I now find I can not use PSUD to model the silicon diodes I had intended (Hexfreds as it happens) ~ since the rectifier list does indeed appear MIA and groups host shows no such thing as a database... therefore I could not find the recent information on the recently group post concerning another contibutor's Hexfreds anywhere. ? As a former Chemist a mathematical method for enumerating Vfac and Vlaw such as simultaneous logarithmic equations has not been the issue for me. - no, what I am struggling to say is really how to use PSUD.? A cursory glance at more modern PSU schema (such as by Dipl. Ing. Jac van de Walle () and using serially connected choke for improved common mode rejection - shows a plethera of different approaches but I have not attempted to model these on PSUD.

Please do not "get me wrong,"? PSUD is clearly a very GREAT project one which has clearly taken a great deal of time and specialist expertise - I only wish there was as great a guide to its use.

HFA25PB60.rect
HFA25PB60.rect

 

I now find I can not use PSUD to model the silicon diodes I had intended (Hexfreds as it happens) ~ since the rectifier list does indeed appear MIA and groups host shows no such thing as a database
Hi,

How to model and add new rectifiers was last addressed about a week ago in the following message: /g/duncanampspsud/message/304

To be fair, the rectifier list (rectifiers.txt) isn't MIA, it was deliberately removed over 4 years ago. This was covered along with the reasons a few days ago in a subsequent message: /g/duncanampspsud/message/308

You should be able to use the HEXFRED rectifiers that were shared by jrussell_88 on June 10th, it's a case of pasting the xml data provided into a text file as per the instructions in the help file or the worked examples in the video (linked in message 304 above).

I think that should solve things, but please let me know if I've missed anything.

Regards,
Duncan
 

On Wed, Jun 12, 2024 at 08:51 AM, Ian Eales wrote:
Diodes now have their own individual files in the program folder

e.g. C:\Program Files (x86)\PSU Designer II\rectifiers
Hi Ian,

The rectifier files (under Windows) are stored in the Appdata folder which can be found at C:\Users\<username>\AppData\Roaming\psud\rectifiers

As per the help file + video, this is the place where changes should be made as this is where the software will load the files from when it starts up.

If you found some in the program files folder, they are shipped with the software to create a set of rectifiers under Appdata if none exist already, i.e. on a first install (they have to come from somewhere, so PSUD copies them across). The software won't read them at a later date so changes to them will be futile.

Regards,
Duncan
 

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Hi Duncan,

My error as I looked in C:\Users\...\AppData\Roaming\psud2 and it only had the rectifiers.txt file.

Never thought to look in the old 'psud' folder ?

Thanks,
- Ian
On 6/12/2024 10:33, Duncan Munro wrote:

On Wed, Jun 12, 2024 at 08:51 AM, Ian Eales wrote:
Diodes now have their own individual files in the program folder

e.g. C:\Program Files (x86)\PSU Designer II\rectifiers
Hi Ian,

The rectifier files (under Windows) are stored in the Appdata folder which can be found at C:\Users\<username>\AppData\Roaming\psud\rectifiers

As per the help file + video, this is the place where changes should be made as this is where the software will load the files from when it starts up.

If you found some in the program files folder, they are shipped with the software to create a set of rectifiers under Appdata if none exist already, i.e. on a first install (they have to come from somewhere, so PSUD copies them across). The software won't read them at a later date so changes to them will be futile.

Regards,
Duncan

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