Actually ce configuration is preferred for amplification since it has a current gain of 20-500 and also has appreciable voltage and power gain. It has moderate output to input impedence ratio(about 50).
bec CE configure transistor has a high gain as compared to all other mode.
comparerission between CB,CC&CE
Common emitter is the preferred circuit because the collector voltage drops to a well defined low value when the transistor is 'on', therefore it absorbs only a small amount of power.
CE gives high gain and amplification as compared to CB and CC. That's why its preferred. input and output resistance moderate value,so many stages coupled to each other without using any additional impedence matching circuit.so maximum power transfer takes place from one stage to another. THAT'S why it is preffered.
the CB configutration is having low impedance & hence used in I-V converters(current -voltage converters)
common emitter configuration is use for amplification purpose while common collector is use as buffer as its op is same as ip..
Slightly less than cc configuration but greater than cb
cc/ce/cb doesn't give the no current gain
Class A amplifiers for signals and class AB for power output. The bias is often set up as a self biased amp.
Common Emitter(CE) Configuration possess largest voltage gain among the three(CE CB CC).
Reason: The common Emitter mode has voltage and current gain better than the other two configurations(CB and CC). i.e it has a current gain greater than that of CC mode and greater voltage gain than that of CB mode.
It depends on what you want to do with the transistor. Class A, common emitter, is used for voltage amplification. Class C, common collector, is used for current amplification. There are other classes and configurations but, again, it depends on what you want to do.
A sexy transistor are two type. NPN and PNP..... c means common b means base .