IBM PCjr Allright?????

From: jpero_at_mail.cgo.wave.ca <(jpero_at_mail.cgo.wave.ca)>
Date: Mon Jun 23 11:16:04 1997

> >
> > What am I making here? Do we know yet?
>
> OK. I was mistaken. It appears that what's needed is a 34V centre-tapped
> transformer (we'd call it a 17-0-17V transformer in the UK). You link it
> up like this :
>
>
>
> Mains
> In PC-jr power input
> ---------)||(--------------------( 1
> )||(
> )||(17V
> 110V )||(____________________( 2
> )||(
> )||(17V
> )||(
> ---------)||(--------------------( 3
> Mains
> In
>
> You could also use a transformer with 2 separate 17V windings (they're
> more common than tapped ones in the UK). You'd link that up like this :
>
>
> Mains
> In 17V PC-jr power input
> ---------)||(--------------------( 1
> )||(
> )||(---+
> 110V )|| 0V +----------------( 2
> )|| 17V|
> )||(---+
> )||(
> ---------)||(--------------------( 3
> Mains 0V
> In
>
> Notice the secondary connections put the 2 windings in (additive) series.
That works. BUT, you need to watch the direction of phase on those
paralleled transformers in secondaries and tied together
primaries. Watch the wattage rating. :)


>
>
> --
> -tony
> ard12_at_eng.cam.ac.uk
> The gates in my computer are AND,OR and NOT, not Bill
>
>
Jason D.
Received on Mon Jun 23 1997 - 11:16:04 BST