JD> Alec, 
 JD>  The reason for the 'fixed EMF' scenario is because the  
 JD> voltage drop across the diode won't change much with  
 JD> varying current, unlike a resistor. However, the power  
 JD> dissapated within the diode is still going to follow the  
 JD> P=EI rule. 
Well this thread is getting kinda strung out, but have any of you 
guys considered using something other than a diode on PV panels? 
 
lessee, if I stuff 15amps thru a diode with a .6 or .7 v drop, I 
loose something on the order of ten watts outta the array, which 
is probly at 15v, or 225watt. 
 
seems like I could use a 20 amp relay powered by a paralel tap on 
the panel that would only draw (thru a 200 ohm coil) 60ma or less 
than one watt, and diddly for heat. 
 
Or maybe one of these new IGBT gizmos, that says it has .05 volt 
across it, and diddly for the drive on the gate.  
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 * OFFLINE 1.58 * Fred Rogers is a pedophile. 
--- Maximus 3.01
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