any merit in running dual battery packs ?

[Bob Richards]

LEDs have far too much forward voltage drop, and I don't know of any that can handle that kind of current (although you could parallel a resistor). You would be wasting more than one cell's energy.
 
I like the idea of having two switches. You could try each switch separately and check the servo response, sorta like checking both mags before takeoff in a full-scale.
 
Bob R.


Tom Simes <nsrca at shinymetalass.com> wrote:
I understand and like elements of both Lance's and Keith's approach, but
one thing that I see missing is some easy to spot indication that the
primary pack has sustained a failure. I know you could stick a meter on
the backup pack between each flight to see if it has discharged any, but
I was thinking of something that would stand out.

I'm not an EE, but do you think it would be possible to find a LED with
a low enough forward drop to be used for both preventing discharging as
well as an indicator that there is a condition requiring immediate
attention? I'm thinking that if the LED is inline with the lower
capacity pack, it should only illuminate if current is flowing from that
pack in either Lance's or Keith's design - am I wrong?

-- 
Tom

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20050124/328c7c42/attachment.html