If a FET is connected from the collector to base of a bjt(like a=20
Darlington but with a FET for the "top" transistor), can the bjt=20
transistor achieve saturation specs? Apropos of the OP's desire for a=20
variable load for a battery tester.
--=20

Looking forward,
Al Shinn

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.