12 May
2002
12 May
'02
2:58 p.m.
At 09:05 PM 5/12/02 +0100, you wrote:
It is.
Tony,
That's a good guess but it doesn't have one. It does have a three
position manual switch on the side (DC-Off-AC). I pulled the thing
I still wonder about separate inputs for battery charging and logic
supply. That could be done with the 3 position switch you mentioned :
DC : Both inputs disconnected, battery supplies logic
Off : Charger input connected to battery, no connection to logic
AC : Charger input connected to battery, Supply input connected to logic.
Yes I traced it out between the jack, switch and battery connector. (Pretty bizzare
circuit IMO) I didn't want to tear any further into the calculator at this time. I
found out enough to allow me to power it up and test it. (Those Itrode (sp?) displays sure
look nice!) However I was wondering about the 2nd Dc voltage but I think Don Maslin's
message told me what I needed to know for that.
Joe
apart today and it has some very strange
circuitry inside. I figured out
Have you traced out the wiring to the swtich and the connector yet?