Advanced Qualification · A-002 Advanced components and circuits · A-002-009-009

In a circuit where the components are tuned to resonate at a higher frequency than applied, the circuit is most likely a:

1. A a VHF/UHF amplifier
2. B a linear amplifier
3. C a frequency divider
4. D a frequency multiplier

Correct answer: D — a frequency multiplier. From the official ISED question bank, verified word for word.

Why

A frequency multiplier works by using a circuit tuned to resonate at a harmonic, which is a higher multiple of the input frequency. The full explanation — and one for every question — is in Pro.

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Advanced components and circuits: semiconductors, amplifier classes, oscillators, mixers, filters and digital logic.

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