Re: Clock Card?

["Bill Garber" <willy46pa@comcast.net>]

"Bill Garber" <willy46pa@comcast.net> wrote in message
1iKdnQdL_q8yzvSiXTWJgA@comcast.com">news:1iKdnQdL_q8yzvSiXTWJgA@comcast.com...
>
> "Scott Alfter" <salfter@salfter.dyndns.org> wrote in message
> news:dqbab.59483$nf3.6523@fed1read07...
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA1
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> > In article <K_6dnWT1vaRvu_SiU-KYuQ@comcast.com>,
> > Bill Garber <willy46pa@comcast.net> wrote:
> > >"Michael J. Mahon" <mjmahon@aol.com> wrote in message
> > >20030917230428.19477.00001294@mb-m20.aol.com">news:20030917230428.19477.00001294@mb-m20.aol.com...
> > >> (BTW, the 5832 requires at least 2.2 volts to keep time, so
> > >> there should be two cells on the card...)
> > >
> > >There is only a AA holder on the card, but there is a voltage
> > >boost circuit in place so that is probably correct.
> >
> > There were also lithium cells that were the same size as a AA, but that
> put
> > out 3V instead of 1.5V.  If there's some sort of voltage doubler on the
> > card, though, then just ignore this. :-) (Seems like a strange design
> > decision, though...a lithium cell has to be cheaper than the mix of
active
> &
> > passive parts you'd need to double a DC voltage.)
>
> That could be why it's not working. Did they have 3v AA lithium
> cells in the early 80's? I can't remember.

Ok, I consider the source here, asked at Radio Smack and they
only have ever heard of the 1/2 AA 3.6v lithium battery. Also,
2 other sources reveal that all the batteries that size in more than
1.5v are 1/2 AA, like the ones in the rom3 IIgs. If you've seen or
heard of a full AA 3v battery, please steer me to them. I'd like to
try one before I replace the firmware with the ThunderClock 1.4
version eprom. Of course it may also take a pair of the 1/2 AA and
be 7.2v with a circuit for cutting it back. Could that be possible?

Thanks,

Bill @ GarberStreet Enterprizez };-)
Web Site - http://garberstreet.netfirms.com
Email - willy4SPAM6pa@comXcast.net
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