Multiple choice general knowledge science & technology

Envelope detectors based on diodes are used in most forms of AM radio, from crystal sets to superheterodyne receivers.

  1. True

  2. False
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A Correct answer
Explanation

Envelope detectors using diodes are fundamental to AM (Amplitude Modulation) radio reception. The diode rectifies the AM signal, and a capacitor filters out the high-frequency carrier, leaving the audio envelope. This simple circuit works across all AM radio types, from basic crystal sets to sophisticated superheterodyne receivers.

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