Advanced Qualification · A-002 Advanced components and circuits · A-002-002-008
What is one common use for PIN diodes?
- A As a high voltage rectifier
- B As a constant voltage source
- C As an RF switch
- D As a constant current source
Correct answer: C — As an RF switch. From the official ISED question bank, verified word for word.
Why
A PIN diode acts like a fast electronic gate for radio frequency signals because its middle layer lets it change resistance quickly when you apply voltage, allowing it to turn high-frequency currents on or off without distortion. 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.