Building a Simple Radio Using Tank Circuits and Diodes - DC To Daylight

In this theory-based video, we combine our knowledge of tank circuits and diodes to create the simplest of radios - the crystal receiver! We'll look at the V-I characteristics of germanium and silicon, as well as the lead-sulphide crystal Galena.

Derek also shows how to design an air core inductor to work in concert with a variable capacitor, which will act as a tuning device for our radio. Our diode will act as a detector, which recovers the audio signal and removes the RF component. This is a great beginner project, a lot of fun to put together, and a good opportunity to show off your build skills!

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#0:00 Welcome to DC to Daylight
#0:54 1924 Radio
#2:54 Schematic
#4:55 Curve Tracer
#6:17 Building It!
#6:55 Air Core Inductor
#10:33 Radio
#13:27 Give Your Feedback

#diode #diodecircuits #galena #radiofrequency

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