CCAMP - Common-Collector Amplifier Example R P( x , y ) R1...

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Common-Collector Amplifier Example R P xy , () . Function for calculating parallel resistors. R 1 100000 R 2 120000 R C 0 R E 5600 R S 5000 R L 10000 V plus 15 V minus 15 V BE 0.65 V T 0.025 β 99 α 0.99 r x 20 r 0 50000 v s 1 With v s = 1, the voltage gain is equal to v o . DC Bias Circuits - The second circuit follows from a Thevenin equivalent circuit looking out of the base. 1
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V BB V plus R 2 . V minus R 1 . R 1 R 2 V BB 1.364 = R BB R P R 1 R 2 , R BB 5.455 10 4 = I E V BB V minus V BE R BB 1 β R E I E 2.557 10 3 = r e V T I E r e 9.777 = AC Solutions This solution uses the equations involving R tc , even though R tc = 0. It is based on the Thevenin emitter circuit which has v eoc in series with r ie . v tb v s R P R 1 R 2 , R S R P R 1 R 2 , . v tb 0.916 = R tb R P R S R P R 1 R 2 , , R tb 4.58 10 3 = R te R P R E R L , R te 3.59 10 3 = r' e R tb r x 1 β r e r' e 55.779 = R tc R C R tc 0 = 2
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v eoc v tb r 0 R tc 1 β r' e r 0 R tc 1 β . v eoc 0.915 = r ie r' e r 0 R tc r' e r 0 R tc 1 β . r ie 55.717 = v o v eoc R P R E R L , r ie R P R E R L , . v o 0.901 = A v v o A v 0.901 = This is the voltage gain.
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This note was uploaded on 05/26/2011 for the course ECE 3050 taught by Professor Hollis during the Summer '08 term at Georgia Institute of Technology.

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CCAMP - Common-Collector Amplifier Example R P( x , y ) R1...

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