Advanced Qualification · A-002 Advanced components and circuits · A-002-007-008
The FET amplifier source follower circuit is another name for:
- A common mode circuit
- B common gate circuit
- C common drain circuit
- D common source circuit
Correct answer: C — common drain circuit. From the official ISED question bank, verified word for word.
Why
In a source follower, the input signal enters the gate and the output leaves the source, meaning the drain terminal connects to the power supply and stays at a steady voltage for both input and output. The full explanation — and one for every question — is in Pro.
Practise this section
Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.