At 11:46 AM -0600 11/26/05, Mike Feldman wrote:
>Rob Danielson:
>
>> ... I'll try to pull the collective insights together...
>
>I bought a bunch of the 9v battery connectors and
>hotglued 6 of them into a housing and wired them
>in series. 5 alkalines and another shorted connecter
>give you adequate voltage when the batts are fresh.
>Six connectors lets you use NiMh rechargables that
>don't generate full voltage.
>
>You'll want a good battery tester that actually
>draws some current (not just a voltmeter) to weed
>out the weak cells. One cell going bad renders
>the other 4 or 5 useless.
>
>-- Mike
>
Thanks for this suggestion! I'll up the ante to 6. I'm sending you
and Allen the draft for comments if you like.
The Rolls has a 12 volt external jack so its easy to get around
pockets full of 9 volt recharge bats (which are not cheap). The
Rolls has not failed me so the goal for me would be proving that the
battery design produces less noise and then onto the powering
options. Did your "pure" bat phantom seem to work well/quietly?
I'd like any "pure" battery version to run for at least 12 hours. I
bought a bunch of 2/3 size AA's to make a large sled of many smaller
voltage cells to supply ample current, but I didn't stop to think how
I would re-charge such a high voltage pack. Awkward and more expense
to break it into 4 packs for charging.
If Klas's friend's unit provides stable,clean power on 1-9 volt
battery, likely one could parallel several 9volt cells. Starting to
seem more like a bargain at $250. Rob D.
________________________________________________________________________
________________________________________________________________________
|