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(ET) compound motors



Rhett,  Thanks for the diagram it helped a lot and I think that I am 
starting 
to understand.  But I am still missing something here. I believe that my 
E-20 
is a compound shunt wound motor(I am not sure if it is cumulative or 
diferential) but as I have been wiring it up for a pulse width modulated 
controller I notice that what I thought were the field terminals are 
separate 
from the armature terminals. That doesn't seem to jive with your drawing 
if I 
am reading it right. Is there a separately controlled field in addition to 
the ones you listed on your diagram or is the one you call the shunt 
winding 
the separate field on my motor?  Or am I missing something else?   Thanks 
in 
advance, I am enjoying the discussion!  Kirk