[Milsurplus] Re: [The WS No.19 Group] TCS Mains psu question

[wf2u at ws19ops.com]

Ben,

I can look at my PSU and also I'll check in all my original manuals  
for the schamatic. I'll scan it and email it to you.
Is it possible that a previous owner modified it slightly?

73, Meir WF2U
Landrum, SC

Quoting Military1944 at aol.com:

> TCS Mains power unit 20242
>
> On my psu, and on the circuit, and on the layout diagram there is switch
> S501.
>
> On my psu it is marked 400-450v.  But, the actual wiring and that  shown on
> the layout diagram, has both sides of the switch routed to pin 1 of   
>  T502 (the
> main tx ht transformer).
>
> Now, I guess that one side of the switch (400) should indeed go to pin 1,  ie
> the full winding of the primary, and that the 450 side should switch the
> mains to the next tap hence increase the o/p of the secondary, ie pin 2.
>
> BUT, this is a guess, so, before I blow up my psu, what do others think ?
>
> I can find no mention in the 13 and 14 handbooks downloaded off the
> Royalsigs site.
>
> Does anyone have an actual manual for this psu ?
>
> cheers, Ben G4BXD.
>
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