Just for you Chris, I took the bottom off my PU-1D and took a couple of pictures of what I found inside. ;-)
I think (because it's wrapped up in tape) there is a big electrolytic cap in there as well.
I'm not sure the pictures help but as you can see it's not just a couple of components but I'm not sure I'd go as far as to call it elegant (especially the soldering as I was probably supposed to be 'working' when I did it). ;-)
Cheers, T i m
Can't see all the components, or be sure of the colours on those brown bodied resistors but my reverse eng sketch is here:-
Looks like a similar version to :-
Woah, that's amazing Geo, just from those two pictures. ;-)
Would you like me to confirm what the missing values are (the vertical component and the cap)?
Yeah, I think I remember that being the only way we worked out we could do it back then (well, not without a current shunt of some sort etc).
It's funny, after making and fitting it I'd sorta forgotten I had ... because it was out of sight and 'just worked'. ;-)
The PCB was just stuffed into a little zip top component bag and it all bundled in there and the base put back on. I probably intended doing it properly sometime but ... ;-)
Cheers, T i m
Thanks!
Not for my sake anyway - I was bored.
I open boxes now and don't even know what the board inside was meant to do - and I will have built it many years ago.
Ok ... the next time I'm bored then. ;-)
LOL.
Cheers, T i m
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