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This chapter delves into the design guidelines for common collector and common drain circuits while focusing on numerical analysis for these configurations. The output impedance, transconductance, and collector current calculations are emphasized as critical components of the design process. Moreover, the chapter outlines systematic approaches to circuit design through practical examples, laying a foundation for understanding additional configurations like common gate and common base.
References
Lecture 48 Part B.pdfClass Notes
Memorization
What we have learnt
Final Test
Revision Tests
Term: Common Collector Circuit
Definition: A configuration where the collector terminal serves as a common terminal for both input and output, offering high input impedance and low output impedance.
Term: Common Drain Circuit
Definition: Also known as a source follower, this configuration functions similarly to the common collector but is primarily used in MOSFET technology.
Term: Transconductance (gm)
Definition: A measure of the rate of change of the output current as a function of the input voltage in a transistor, indicating the performance of the circuit.
Term: Output Impedance
Definition: The resistance seen by the load when connected to the output of a circuit, critical for determining how the circuit will interact with subsequent stages.
Term: Upper Cutoff Frequency
Definition: The frequency above which the gain of the circuit begins to drop, often determined by load capacitance and circuit resistance.