Answer: 4 (bridge rectifier).
- A Just 1 diode, as in a basic half-wave rectifier
- B 2 diodes, as in a center-tap full-wave rectifier
- C 3 diodes, an unused odd configuration
- D 4 (bridge rectifier)
Correct answer: D. 4 (bridge rectifier)
Explanation: Full-wave bridge rectifier uses 4 diodes arranged in a bridge circuit to rectify both halves of AC cycle.
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.