Which of the following components are used in a power supply filter network?
The correct answer is C: Capacitors and inductors. Components used in a power supply filter network are capacitors and inductors. Filter networks use capacitors and inductors to smooth the rectified DC output. For amateur radio operators, this is how power supplies reduce ripple. Understanding this helps when designing power supplies.
Exam Tip
Power supply filter = capacitors and inductors. Think 'F'ilter = 'F'ilters use 'C'apacitors and 'I'nductors. Filter networks use capacitors and inductors to smooth rectified DC output. Not diodes (rectifiers), not transformers/transducers - just capacitors and inductors.
Memory Aid
"Power supply filter = capacitors and inductors. Think 'F'ilter = 'F'ilters use 'C'apacitors and 'I'nductors. Filter networks use capacitors and inductors to smooth rectified DC output. Standard power supply filter components."
Real-World Application
A power supply filter network: After rectification, capacitors and inductors smooth the DC output, reducing ripple. Capacitors store energy, inductors filter current. Together they create a low-pass filter that removes AC ripple from the DC output. This is how power supply filters work.
Key Concepts
Why Other Options Are Wrong
Option A (Diodes): Incorrect. Diodes are used in rectifiers, not filter networks. Diodes convert AC to DC, filters smooth the DC.
Option B (Transformers and transducers): Incorrect. Transformers are for voltage conversion, not filtering. Transducers convert energy forms, not used in filters.
Option D: Incorrect. Since A and B are not correct, 'all of the above' cannot be correct. Only capacitors and inductors are used in filter networks.
题目解析
The correct answer is C: Capacitors and inductors. Components used in a power supply filter network are capacitors and inductors. Filter networks use capacitors and inductors to smooth the rectified DC output. For amateur radio operators, this is how power supplies reduce ripple. Understanding this helps when designing power supplies.
考试技巧
Power supply filter = capacitors and inductors. Think 'F'ilter = 'F'ilters use 'C'apacitors and 'I'nductors. Filter networks use capacitors and inductors to smooth rectified DC output. Not diodes (rectifiers), not transformers/transducers - just capacitors and inductors.
记忆口诀
Power supply filter = capacitors and inductors. Think 'F'ilter = 'F'ilters use 'C'apacitors and 'I'nductors. Filter networks use capacitors and inductors to smooth rectified DC output. Standard power supply filter components.
实际应用示例
A power supply filter network: After rectification, capacitors and inductors smooth the DC output, reducing ripple. Capacitors store energy, inductors filter current. Together they create a low-pass filter that removes AC ripple from the DC output. This is how power supply filters work.
错误选项分析
Option A (Diodes): Incorrect. Diodes are used in rectifiers, not filter networks. Diodes convert AC to DC, filters smooth the DC. Option B (Transformers and transducers): Incorrect. Transformers are for voltage conversion, not filtering. Transducers convert energy forms, not used in filters. Option D: Incorrect. Since A and B are not correct, 'all of the above' cannot be correct. Only capacitors and inductors are used in filter networks.
知识点
Power supply filter, Capacitors, Inductors, Filter network
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.