12 Oct
2000
12 Oct
'00
6:16 a.m.
"Fred Cisin (XenoSoft)" wrote:
No, my point is that the 12V system in a car is already nasty
stuff and that there are failure modes in parts of the car's
electrical system, such as the battery terminals or alternator
rectifiers, that can lead to _much_ nastier behavior.
That's an
understatement; voltage can fluctuate
between 8 and 15V as different subsystems in the car
are turned on; then there are spikes in excess of 100V
induced by different systems; and then, if your battery
contacts are less than perfect you can have 30VAC, rectified
(or not, if the rectifiers fail in a particularly nasty
mode!) from the alternator.
Yes, but that AC (sometimes quite a bit higher than 30V (220v?)) is THREE
PHASE! What kind of computer were you planning to run? Adding major mass of batteries can sink much of the
variation.
Again, until the terminals corrode.
Power CAN be cleaned up.
Grumpy Ol' Fred cisin(a)xenosoft.com
Exactly. In a car, it _HAS_ to be cleaned up if you want
to power electronic devices.
--
Carlos Murillo-Sanchez email: cem14(a)cornell.edu
428 Phillips Hall, Electrical Engineering Department
Cornell University, Ithaca, NY 14853