PSUD2 Transformer Source Resistance

[Ardee]

Tube rectifiers often specify the minimum resistance required in series with each rectifier to limit peak current. For a full-wave supply, is the PSUD source resistance for the whole secondary winding or, as with the voltage, one half of the winding?

I have used PSUD2 with Ubuntu for a while now, installed with "PlayOnLinux" . A problem created by Ubuntu imposing the snap version of Firefox is that the PSUD help files are not available from within the program.

 

[rayma]

You mean full wave center tap? The resistance is between the center tap, and one end of the winding.

 

[PRR]

is the PSUD source resistance for the

PSDU support is now at https://groups.io/g/duncanampspsud
Duncan often responds within a few days.

PSUD help files are not available from

The Help files are simple HTML. I had thought they were called from the Web (wrong); they are actually at
C:\Program Files (x86)\PSU Designer II\help
or under where ever your U-Snap puts PSUD files.

If SnapFireFox can't reach into a program folder, I'd call that "broken". I see others are saying the same. Perhaps if explained, Duncan can post a copy of the Help folder on the web where FF can read it.

---

FWIW, I don't see an explanation of this issue.

 

[Ardee]

Thanks for the replies. I will re-post on the correct forum.

Yes, the Firefox snap is very broken indeed.

 

[trobbins]

Also note that the effective source resistance in the model includes the influence of the power transformer's primary winding resistance too. I recommend you use the in-built calculator in PSUD2 to input primary and secondary voltage and winding resistance data.

 

[Ardee]

Hi trobbins,

Yes, that was what I was doing. I just wasn't sure whether to enter the entire secondary winding resistance, or just half of it, as you do with the voltage.