Embed Size (px)
Citation preview
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-1Chapter Four
Basic BJT Amplifiers
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-2Figure 4.2(a) Bipolar transistor inverter circuit; (b) inverter transfer characteristics
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-3Figure 4.4Common-emitter transistor characteristics, dc load line, and sinusoidal variation in base current, collector current, and collector-emitter voltage
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-4Figure 4.5 Base current versus base-emitter voltage characteristic
with superimposed sinusoidal signals
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-5Figure 4.8A simplified small-signal hybrid- equivalent circuit for the npn transistor
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-6
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-7Figure 4.13Expanded small-signal model of the BJT, including the Early effect, for the case when the circuit contains the (a) transconductance and (b) the current gain parameters
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-8Figure 4.22aBasic data sheet for the 2N2222 bipolar transistor
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-9Figure 4.22b
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-10Figure 4.28
A bipolar circuit with an emitter resistor, a voltage-divider biasing circuit, and a coupling capacitor
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-11Figure 4.29
The small-signal equivalent circuit with an emitter resistor
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-12Figure 4.44Emitter-follower circuit
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-13Figure 4.45Small-signal equivalent circuit of the emitter-follower
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-14Figure 4.53
Basic common-base circuit
McGraw-Hill Copyright © 2001 by the McGraw-Hill Companies, Inc. All rights reserved.
4-15Figure 4.54
(a) Simplified hybrid- model of the npn transistor and (b) small-signal equivalent circuit of the common-base circuit
