Question about TI calculator

From: Peter C. Wallace <pcw_at_mesanet.com>
Date: Thu Dec 19 18:40:00 2002

On Thu, 19 Dec 2002, Dave Mabry wrote:

> Well, after a little more searching, it appears that the circuit inside
> the BP-8 battery pack is a step-up circuit to generate 9 volts. But
> I'll wait to hear from someone here with actual experience before I hook
> up a 9v battery.


My TI programmer has (and works well with) a 9V battery (the battery
compartment door shows a picture of a 9V battery) and just a hole for where
the charger goes.

Is the connector for the charger part of the BP8?


>
> Dave Mabry wrote:
> > I became the grateful recipient of a TI Programmer today. A buddy at
> > work said "here, you like calculators, right? Better than throwing it
> > away." Well, I said "thanks!"
> >
> > Now, in looking about the internet for some info on the battery styles
> > for these things, I have a couple of questions that I cound't find the
> > answer to.
> >
> > This calculator has a battery pack called BP-8 which has 2 AA ni-cads
> > and a small circuit in it. It connects to the calculator internally
> > with a connector that would also mechanically mate to a 9 volt battery.
> > Now I would not expect a 9 volt battery to work where 2 AA's work, but
> > I'm not sure. In looking at Gene's web site he says the BP-8 is also
> > used on the TI-30 and I see TI-30's on ebay saying that they work with 9
> > volt batteries.
> >
> > I will replace the two AA's with new ones. That should make the BP-8
> > good again.
> >
> > I guess the is a roundabout way of asking for some background on the
> > power requirements of this calculator. Unfortunately my buddy had lost
> > the AC adapter (apparently it was an AC-9132, thanks Gene!). So I'll be
> > looking for one of those. 5.7v, 240ma, and that small 2-pin connector.
> >
> > Thanks for any help.
>
>
> --
> Dave Mabry dmabry_at_mich.com
> Dossin Museum Underwater Research Team
> NACD #2093
>
>
>

Peter Wallace
Mesa Electronics
Received on Thu Dec 19 2002 - 18:40:00 GMT

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