On Wednesday September 04 1996, Roy J. Tellason of (1:270/615) wrote to Alec 
Cameron:
 RJT> Shoot,  I guess I'm just going to have to take one of the computers 
around
 RJT> here and couple it to some sort of interface that'll log both the 
terminal
 RJT> voltage and the terminal current,  if I can figure out an easy way to
 RJT> accomplish that...   
A variable resistance I/O?!? Hmmmm... a Joystick port? Shouldn't be TO hard.
I say resistance, because you can set it up so your tested voltage works as a 
resistance. If you can find out the circut's resistance (I don't know what 
you guys are talking about, didn't see beginning of thread) you can calculate 
the current with Ohm's law.
 RJ>> Yeah,  but that's not going to help much with what I've got here.
 RJ>> Within this small office at the moment are two group 27 deep cycle
 RJ>> batteries, two 6v/33ah gels,  and four 6v/12ah gels.
OIC! Hmmm, you'd need some sort of ammeter there. Maybe a coil with a small 
voltage applied and tested so you know what amount of current results in what 
voltage, and you can then use one axis of the joystick for voltage, the other 
for current.
RYL,
    Chris
--- GoldED 2.40+
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