>mY KNOWLEGE OF ELECTRONICS IS LIMITED BUT (sorry, caps lock) don't
elecrical
>items basically ask for a certain amount of watts and as long as the power
>supply can provide it then you're okay?
Sometimes. Roughly speaking, the current an electronic device draws depends
on
its interior resistance. Unfortunately, rechargeable batteries have an
interior
resistance that is extremely low, very close to zero if they are intact.
This is why you can get hundreds of amperes out of a car battery which will
effectively melt a thick wire you use to short it. Even a fully charged tiny
AA battery can deliver > 10 amperes or more if shorted.
This also works in the other direction, and this is the reason that the
charge
current needs to be limited. If you don't, the cells will draw so much
current
that they (and probably you) will be damaged for life very fast.
Frank
***************************************
NewtonTalk brought to you by:
EVOTE.COM -- the ESPN of politics on the Internet! All the players, all the news, and the hottest analysis and features (plus 'toons!) anywhere.... visit http://www.evote.com today!
***************************************
Need Subscribe/Unsubscribe info?
Visit the NewtonTalk section at http://www.planetnewton.com
This archive was generated by hypermail 2b29 : Tue Sep 12 2000 - 00:00:07 CDT