Alt-BEAM Archive
Message #05696
To: beam@sgiblab.sgi.com
From: Richard Piotter richfile@rconnect.com
Date: Fri, 13 Aug 1999 13:05:59 -0500
Subject: [alt-beam] Re: Lithium and pager motors
My guess is B. My new digital camera can't take more than 20 or so
pictures if you throw in standard AA battereis. Even Duracells won't
last to fill the memory card a second time. Well, the manual says it
REQUIRES high drain batteries. these high drain batteries provide more
current than traditional batteries. The cameral runs fine on them. The
normal batteries were all "supposedly" dead, but I had a hunch. Popped 4
batteries the cammera called dead into a CD player and listened to a CD.
I wouldn't call those dead. The reason is the normal batteries can't
continuously provide high drain current. When they are brand new, the
current may be a little higher, but it drops in a very short time. to
the camera's power monitor circuits, the battery had just gone dead, but
it simply passed that "surge" of startup current. It obviously wasn't
dead to be able to run a CD player!!! High drain batteries can provide
the higher current their full life, and therefore, the device can
opperate throughout the full battery life, instead of the beginning.
Is your battery one of those litium watch or calc backup batteries (they
look like a coin), or are tehy the AAA/AA type Lithium batteries. The
coin batteries may simply not have enough power to run the motor. If
they are big ones, then that;s weird as Lithiums outperform Alkaline
High Drain Batteries.
"Van Zoelen, Bram AA SSI-TSEA-352" wrote:
>
> Have you used a voltage meter to check what is happening with the voltage?
> ps. batteries can seem to have a full charge when unloaded, but when they
> have to deliver power the voltage will drop. Is so then
> A: your battery need to be re-charged
> B: You draw to much current.
> C: The battery is defect.
>
> Bram
>
> > ----------
> > From: Zulu35[SMTP:zulu35@singnet.com.sg]
> > Reply To: beam@sgiblab.sgi.com
> > Sent: Sunday, August 01, 1999 11:17 AM
> > To: BEAM
> > Subject: Lithium and pager motors
> >
> > hi...
> > just a question..... is it advisable to use lithium batteries to drive
> > pager motors?
> >
> > i tried doing so and this is what i got: the motor spins for a while (3-4
> > sec) then stops totally.
> >
> > anyone out there knoes the reason?
> >
> >
> > rdgs
> > zulu
> >
> > The Difference between interest and committment
> > is that when you are interested in something, you
> > do it only when its convenient. When you are
> > committed to something, you accept only results,
> > no excuses ----- Kenneth Blanchard -----
> >
> >
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
5697 Fri, 13 Aug 1999 13:20:03 -0500 [alt-beam] Re: Contest entry beam@sgiblab.sgi.com Richard Piotter Do you have the 9 volt panel charge... say, a 4.8 volt battery pack, and
then run power from that? is there a regulator anywhere in the circuit?
I want to build Megavore, and this circuit would be great. I have the
exact same solar panel you have, andthe frame is built. the diference,
is I use a pair of MAXON motors from MECI (1:40).
Oh, is the parts list on your page complete? What type of circuit stores
the power, does it run during the day (you said it had to run at night).
How does it stop before killing it's batteries, and is it possible to
have it run in the day when there is excess power and the batteries are full.
Wow! Another robot I might be able to finish before the meeting on the 19th!!!
Woo-Hoo!!!
Ian Bernstein wrote:
>
> Hi all,
>
> Check out my contest entry at....
> http://beam-online.com/chiucontest899/
>
> and tell me what you think. It's the first "useful" robot in my
> collection. What it does is goes around my room at night and cleans the
> floor!
>
> Laterz
>
> *-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-*
> Ian Bernstein "aka - Synet" The Master Builder
>
> E-Mail - Ian@beam-online.com
> BEAM Online - http://www.beam-online.com
> Quote - "Those parts of the system that you can hit with a hammer
>
> are called hardware; those program instructions that you
> can
> only curse at are called software."
> - Levitating Trains and Kamikaze Genes
> Technological
> Literacy for the 1990's
--
Richard Piotter
richfile@rconnect.com
The Richfiles Robotics & TI web page:
http://richfiles.calc.org
For the BEAM Robotics list:
BEAM Robotics Tek FAQ
http://people.ne.mediaone.net/bushbo/beam/FAQ.html
5698 Fri, 13 Aug 1999 14:24:28 -0400 (EDT) [alt-beam] Re: Lithium and pager motors alt-beam@egroups.com Stephen Walter Lavedas On a side note, Rechargable NiCads actually will run a digital camera for
longer than Alkaline's because they deal with high current applications
better even though their nominal voltage is lower and in general they
don't last as long. Nickle Hydride batteries (1-800-Batteries is the only
US source I am aware of) are rechargables that are IDEAL for Digital
Camera appications. They sell like crazy in Japan (or so I've been lead
to believe) but the US Battery Manufacturers won't allow them to be sold
here because it would destroy their business of selling new batteries.
Steve
On Fri, 13 Aug 1999, Richard Piotter wrote:
> My guess is B. My new digital camera can't take more than 20 or so
> pictures if you throw in standard AA battereis. Even Duracells won't
> last to fill the memory card a second time. Well, the manual says it
> REQUIRES high drain batteries. these high drain batteries provide more
> current than traditional batteries. The cameral runs fine on them. The
> normal batteries were all "supposedly" dead, but I had a hunch. Popped 4
> batteries the cammera called dead into a CD player and listened to a CD.
> I wouldn't call those dead. The reason is the normal batteries can't
> continuously provide high drain current. When they are brand new, the
> current may be a little higher, but it drops in a very short time. to
> the camera's power monitor circuits, the battery had just gone dead, but
> it simply passed that "surge" of startup current. It obviously wasn't
> dead to be able to run a CD player!!! High drain batteries can provide
> the higher current their full life, and therefore, the device can
> opperate throughout the full battery life, instead of the beginning.
>
Home