What is the typical configuration of a common emitter BJT amplifier?

Practice Questions

Q1
What is the typical configuration of a common emitter BJT amplifier?
  1. Input at collector, output at emitter
  2. Input at base, output at collector
  3. Input at emitter, output at base
  4. Input at collector, output at base

Questions & Step-by-Step Solutions

What is the typical configuration of a common emitter BJT amplifier?
  • Step 1: Understand that a common emitter BJT amplifier uses a bipolar junction transistor (BJT).
  • Step 2: Identify the three terminals of the BJT: the emitter, base, and collector.
  • Step 3: Recognize that in this configuration, the input signal is connected to the base terminal.
  • Step 4: Note that the output signal is taken from the collector terminal.
  • Step 5: Remember that the emitter terminal is usually connected to ground (0V) or a reference voltage.
  • Step 6: Understand that this configuration provides voltage gain, meaning the output signal is larger than the input signal.
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