[sdiy] OB-Xa battery and another question

[Peter Blackett]

Dear Tom and list,
I believe the OBXA uses a max690 ic [ data at the maxin web site ], so
it seems you could use a Lithium 3.6 volt battery instead of a 3 volt
one , as the datasheet suggests that 3.6 volts is within the acceptable
input range for the ic .
is it correct that the OBMX software upgrade is a 1 meg eprom on the
processor board and a 27256 eprom on each voice card ?
anyone know how many different versions of the software were released ?
regards Peter 


Tom Arnold wrote:
> 
> Trying to determine, without opening the unit, what battery goes in this
> thing.
> 
> 3volt Lithium sound right? 1/2AA sizing
> 
> Has anyone put a 3.6volt lithium in successfully?
> 
> Its a friend of mines.  I'm thinking of putting a battery holder in for him
> so he can replace it himself.  If the 3.6v units ( readily available
> Macintosh batteries ) will work safely, I'd like to go that route.
> 
> Thanks.
> 
> --
>  ------------------------------------------------------------------------
>  - Tom Arnold -       When I was small, I was in love,                  -
>  - Sysabend   -       In love with everything.                          -
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