On Mon, Jan 30, 2006 at 10:13:31PM +1300, Jinx wrote:
> > * Needs to be quite small; the usual AA/AAA are a bit bigger
> > than I'd like.  Something about the size of a CR2032 would be
> > great, but could be a bit bigger
> 
> How about a couple of AAAA alkaline ? 3.65V, 625mAh,

Ooh, I hadn't heard of AAAAs.  They look like thinner AAAs, though, and
it's the length that's the problem (which I hadn't specified earlier).
It wants to fit into the smallest sphere possible, IYSWIM.

You've reminded me of N batteries though, which I think are roughly
half-length AA.

> can be boosted to the PIC's Vdd (do you really need 5V for that ?) and
> 10V-ish with a simple oscillator

No, I don't need 5V for the PIC, as long as it can still drive the
transducer at a higher voltage.

Thanks,

Chris
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