DET 218 ANALOG ELECTRONICS 2014/2015 LAB 2 COMMON COLLECTORName: _______________________________ Matrix No : ________________Course : _________________________________ Date : _________________PART A : BJT COMMON COLLECTOR AMPLIFIER (VOLTAGE GAIN)PRE LAB CALCULATIONSDC analysis assumDC = 100 VBE(!n) " #$% VVBB+=2 12B BBCC BBR R RV VRBB+=2 12 1B BB BBBR RR RRIBE DC BBON BE BBBR RV VI) 1 () ( + +=IEB DC EI I ) 1 ( + =VEE E ER I V =VB) (ON BE E BV V V + =AVVb Vin VA A A =(7 MARKS)1DET 218 ANALOG ELECTRONICS 2014/2015 LAB 2 COMMON COLLECTORAC analysis assuma& = 100 RL " ' ()

EI310 25RLa&L E LacR R R =Rin* ) )( 1 (Lac e acR r + + Rin) (2 1 inb B BR R RAV*Lac eLacBLVbR r RVVA+= =AVin) ( ) ( GEN S ininac inBVinR RRVVA+= =AVVb Vin VA A A =

(7 MARKS)PART A: E+PERIMENT RESULT2RL!s&ill!s&!, ' ( '# ( -. ( '## (AV*pk pk BVpk pk LVAVpk pkac inVpk pk LV)(DET 218 ANALOG ELECTRONICS 2014/2015 LAB 2 COMMON COLLECTOR(8 MARKS)PART B : INPUT / OUTPUT IMPEDANCERV (masu)0 1 2) (ac inVBV =)2in " Rin " RV(3 MAR4S)PRE LAB CALCULATIONSassumeAC " '##R!u5(T6!)y)ERacGEN SRoutR=) (OSCILLOSCOPEVl!a0 !7&Vl!a0 RLR!u5(E8,)imn5) = 1/RL LVc o LVLRoutR(6 MARKS)3DET 218 ANALOG ELECTRONICS 2014/2015 LAB 2 COMMON COLLECTOR9UESTIONS (: MAR4S)i) State other name for common-collector amplifier ii) What is the ideal maximum voltage gain of common-collector amplifier? iii) What is the characteristic of common collector amplifier that makes it a useful circuit? iv) What isthephaserelationshipof theinput andoutput voltageof commoncollectoramplifier? 4DET 218 ANALOG ELECTRONICS 2014/2015 LAB 2 COMMON COLLECTORCONCLUSION AND DISCUSSION('# MAR4S) 5