IBM PCjr Allright?????

From: A.R. Duell <ard12_at_eng.cam.ac.uk>
Date: Mon Jun 23 21:29:29 1997

> > 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. :)

That's why I put the 0V and 17V markings on the schematic. In the UK, it's
conventional to mark the 'start' of a winding with 0V and the 'end' with
the appropriate voltage.

> Jason D.


--
-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 - 21:29:29 BST

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