Re: Battery powered II+

[dalloff@freenet.columbus.oh.us (Dave Althoff)]

jcreid@ix.netcom.com wrote:
: I'm working on a project that would involve running a II+ from a standby
: battery system(12V).  Since the II+ requires both +12 and -12 as well as
: +5 and -5 supplies, I'm guessing this could all be done from a decent
: deep cycle battery and some adequately heat sunk 3 terminal
: regulators(7805, 7905, & 7912).  Has anyone out there done anything like
: this before?  The IIc would probably be a better choice, but it doesn't
: have the expandability I need.  Any advice would be greatly appreciated.

I don't have all the answers you need, but I can suggest that the ][e has
the expandability of the ][+ (unless you are using Slot 0), but I believe
it has slightly lower power requirements, which would translate into
longer battery life.

Just thought I would point that out.  Of course, the expensive but very
simple alternative would be to use a voltage inverter to convert the 12v
battery output to 110VAC and push that through the ]['s power supply, but
that seems like such a waste of effort...

]Dave Althoff, ][.
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