Sharp EL-8 calculator

From: Don Maslin <donm_at_cts.com>
Date: Sun May 12 22:54:23 2002

On Sun, 12 May 2002, Tony Duell wrote:

> >
> > 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.

Tony, I would question this as the manual states that in the OFF
charging mode the battery will come to full charge in 3 hours, while in
AC mode it requires about 14 hours. Obviously, in AC mode the battery
is being charged at a rather lower rate.

                                                 - don

> > 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?
>
> -tony
>
>
Received on Sun May 12 2002 - 22:54:23 BST