23 Jun
1997
23 Jun
'97
4:16 a.m.
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(a)eng.cam.ac.uk
The gates in my computer are AND,OR and NOT, not Bill
Jason D.