IBM PCjr Allright?????

From: A.R. Duell <ard12_at_eng.cam.ac.uk>
Date: Mon Jun 23 20:23:07 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.


--
-tony
ard12_at_eng.cam.ac.uk
The gates in my computer are AND,OR and NOT, not Bill
Received on Mon Jun 23 1997 - 20:23:07 BST

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