© The McGraw-Hill Companies, Inc McGraw-Hill 1 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I 10 Transistor Amplifiers and Switches
© The McGraw-Hill Companies, Inc McGraw-Hill 2 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure 10.2 Graphical interpretation of h parameters
© The McGraw-Hill Companies, Inc McGraw-Hill 3 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure 10.3 h-parameter small-signal model for BJT
© The McGraw-Hill Companies, Inc McGraw-Hill 4 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure 10.7 The BJT common-emitter amplifier
© The McGraw-Hill Companies, Inc McGraw-Hill 5 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure 10.9 Effect of coupling capacitors on DC and AC current paths C E R S R L R E C C C C C E R 2 B V CC + – v out (t) DC current AC current R C v S (t) + ~ – R 1
© The McGraw-Hill Companies, Inc McGraw-Hill 6 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure DC and AC circuits for the common-emitter amplifier
© The McGraw-Hill Companies, Inc McGraw-Hill 7 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure DC bias circuit for the common- emitter amplifier B C E R B V CC R E V BB I CQ I BQ V CEQ _ + R C
© The McGraw-Hill Companies, Inc McGraw-Hill 8 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure Typical common-drain and common-source MOSFET amplifiers
© The McGraw-Hill Companies, Inc McGraw-Hill 9 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure MOSFET small-signal model D + – V GS g m V =I D MOSFET small signal model S G MOSFET circuit symbol D S G
© The McGraw-Hill Companies, Inc McGraw-Hill 10 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure DC circuit for the common- source amplifier
© The McGraw-Hill Companies, Inc McGraw-Hill 11 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure AC circuit for the common- source MOSFET amplifier
© The McGraw-Hill Companies, Inc McGraw-Hill 12 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure MOSFET source follower and DC circuit
© The McGraw-Hill Companies, Inc McGraw-Hill 13 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure AC equivalent circuit for the MOSFET source follower + _ ~ G V GS R G g m V v out + – S D + – R S v in
© The McGraw-Hill Companies, Inc McGraw-Hill 14 PRINCIPLES AND APPLICATIONS OF ELECTRICAL ENGINEERING THIRD EDITION G I O R G I O R I Z Z O N I Figure MOSFET switching characteristic