Chapter 5: BJT AC Analysis
BJT Transistor Modeling
The re Transistor Model
Common-Base Configuration
Input impedance:
Output impedance:
Voltage gain:
Current gain:
Common-Emitter Configuration
Common-Emitter Configuration
Common-Collector Configuration
The Hybrid Equivalent Model
Simplified General h-Parameter Model
re vs. h-Parameter Model
The Hybrid p Model
Common-Emitter Fixed-Bias Configuration
Common-Emitter Fixed-Bias Configuration
Common-Emitter Fixed-Bias Calculations
Common-Emitter Voltage-Divider Bias
Common-Emitter Voltage-Divider Bias Calculations
Common-Emitter Emitter-Bias Configuration
Impedance Calculations
Gain Calculations
Emitter-Follower Configuration
Impedance Calculations
Gain Calculations
Common-Base Configuration
Calculations
Common-Emitter Collector Feedback Configuration
Calculations
Collector DC Feedback Configuration
Calculations
Two-Port Systems Approach
Effect of Load Impedance on Gain
Effect of Source Impedance on Gain
Combined Effects of RS and RL on Voltage Gain
Cascaded Systems
The output of one amplifier is the input to the next amplifier
The overall voltage gain is determined by the product of gains of the individual stages
The DC bias circuits are isolated from each other by the coupling capacitors
The DC calculations are independent of the cascading
The AC calculations for gain and impedance are interdependent
R-C Coupled BJT Amplifiers
Cascode Connection
Darlington Connection
DC Bias of Darlington Circuits
Feedback Pair
Current Mirror Circuits
Current Source Circuits
Current Source Circuits
Fixed-Bias Configuration
Voltage-Divider Configuration
Emitter-Follower Configuration
Common-Base Configuration
Troubleshooting
Blank Presentation
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