AdvancedA-002-007-009
The FET amplifier common source circuit is similar to which of the following bipolar transistor amplifier circuits?
B
Answer
Circuit design and power supplies
Type
A
Common collector
B
Common emitter
C
Common base
D
Common mode
Answer Notes
To understand amplifier equivalents, you must map the terminals of a Field Effect Transistor (FET) to a Bipolar Junction Transistor (BJT). The FET's Gate corresponds to the BJT's Base, the Source corresponds to the Emitter, and the Drain corresponds to the Collector.
Because the Source is the equivalent of the Emitter, a "common source" FET amplifier functions just like a "common emitter" BJT amplifier. Both configurations are highly popular because they provide good voltage and current gain, and both invert the phase of the input signal by 180 degrees.
Choosing common collector or common base would be incorrect because those correspond to common drain and common gate circuits, respectively.
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The FET amplifier source follower circuit is another name for:
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The FET amplifier common drain circuit is similar to which of the following bipolar transistor amplifier circuits?