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rbj
#6
Nov13-11, 09:26 PM
P: 2,251
Quote Quote by yungman View Post
Actually a lot of amp use Darlington......two CC stage in order to prevent the speaker load from loading the CC stage!!!
actually a Darlington is very nearly the same thing as a CC leading a CE.

and the idea is to greatly reduce base current which is equivalent to bumping up the input impedance.