Amateur Extra › E7 Practical Circuits › E7B09
E7B09
What is characteristic of an emitter follower (or common collector) amplifier?
Pick an answer to check it.
Answer: D. Input and output signals in-phase
An emitter follower (common collector) has no phase inversion; the output follows the input in phase. It has high input impedance and low output impedance, with voltage gain near 1.
Tip: Emitter follower: output follows input, in phase.