Advanced Qualification · A-002 Advanced components and circuits · A-002-002-003
What is a common use for the hot-carrier (Schottky) diode?
- A As balanced mixers in FM generation
- B As a variable capacitance in an automatic frequency control (AFC) circuit
- C As a constant voltage reference in power supply
- D As VHF and UHF mixers and detectors
Correct answer: D — As VHF and UHF mixers and detectors. From the official ISED question bank, verified word for word.
Why
A Schottky diode, often called a hot-carrier diode, switches on and off extremely fast because it lacks the charge storage delay found in standard diodes. 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.