Answer: voltage regulator (in reverse breakdown).
- A voltage regulator (in reverse breakdown)
- B signal amplifier
- C oscillator
- D half-wave rectifier only
Correct answer: A. voltage regulator (in reverse breakdown)
Explanation: Operated in reverse breakdown, the Zener diode maintains a nearly constant voltage, acting as a regulator.
Conductors have overlapping bands, semiconductors have a small energy gap that can be bridged by heat or doping, and insulators have a large gap that blocks conduction.
Concept context
Band theory, p-n junction, diodes, transistors, logic gates, and integrated circuits.