Which type of rectifier circuit uses two diodes and a center-tapped transformer?
The correct answer is A: Full-wave. The type of rectifier circuit that uses two diodes and a center-tapped transformer is full-wave. Full-wave rectifiers use two diodes with a center-tapped transformer to rectify both halves of the AC cycle. For amateur radio operators, this is a common power supply configuration. Understanding this helps when designing power supplies.
Exam Tip
Two diodes + center-tapped transformer = full-wave rectifier. Think 'F'ull-'W'ave = 'F'our diodes? No, 'T'wo diodes with 'T'apped transformer. Full-wave rectifiers use two diodes with center-tapped transformer. Not bridge (4 diodes), not half-wave (1 diode), not synchronous - just full-wave.
Memory Aid
"Two diodes + center-tapped transformer = full-wave rectifier. Think 'F'ull-'W'ave = 'T'wo diodes with 'T'apped transformer. Full-wave rectifiers use two diodes with center-tapped transformer. Common power supply configuration."
Real-World Application
A full-wave rectifier: Two diodes connected to a center-tapped transformer. Each diode conducts during one half of the AC cycle, producing full-wave rectified output. This is more efficient than half-wave (uses both AC halves) and simpler than bridge (only two diodes needed).
Key Concepts
Why Other Options Are Wrong
Option B (Full-wave bridge): Incorrect. Full-wave bridge uses four diodes, not two. Bridge rectifiers don't need center-tapped transformers.
Option C (Half-wave): Incorrect. Half-wave uses one diode, not two. Half-wave rectifiers don't use center-tapped transformers.
Option D (Synchronous): Incorrect. Synchronous rectifiers use active switches, not diodes. Synchronous isn't a standard diode rectifier type.
题目解析
The correct answer is A: Full-wave. The type of rectifier circuit that uses two diodes and a center-tapped transformer is full-wave. Full-wave rectifiers use two diodes with a center-tapped transformer to rectify both halves of the AC cycle. For amateur radio operators, this is a common power supply configuration. Understanding this helps when designing power supplies.
考试技巧
Two diodes + center-tapped transformer = full-wave rectifier. Think 'F'ull-'W'ave = 'F'our diodes? No, 'T'wo diodes with 'T'apped transformer. Full-wave rectifiers use two diodes with center-tapped transformer. Not bridge (4 diodes), not half-wave (1 diode), not synchronous - just full-wave.
记忆口诀
Two diodes + center-tapped transformer = full-wave rectifier. Think 'F'ull-'W'ave = 'T'wo diodes with 'T'apped transformer. Full-wave rectifiers use two diodes with center-tapped transformer. Common power supply configuration.
实际应用示例
A full-wave rectifier: Two diodes connected to a center-tapped transformer. Each diode conducts during one half of the AC cycle, producing full-wave rectified output. This is more efficient than half-wave (uses both AC halves) and simpler than bridge (only two diodes needed).
错误选项分析
Option B (Full-wave bridge): Incorrect. Full-wave bridge uses four diodes, not two. Bridge rectifiers don't need center-tapped transformers. Option C (Half-wave): Incorrect. Half-wave uses one diode, not two. Half-wave rectifiers don't use center-tapped transformers. Option D (Synchronous): Incorrect. Synchronous rectifiers use active switches, not diodes. Synchronous isn't a standard diode rectifier type.
知识点
Full-wave rectifier, Two diodes, Center-tapped transformer, Rectifier circuits
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.