oscillator

In my one-day Tech class, we briefly touch on how energy is stored in an electric field in a capacitor and a magnetic field in an inductor, and I try to make the connection between this concept, the concept of resonance, and how you might use a circuit made up of inductors and capacitors to generate an electromagnetic, or radio, wave. Of course, I really don’t have time to explain this fully, but I do want to give them a taste for why this is important.

Having said that, I recently ran across this video, an old military training video that explains electronic oscillation to mechanical oscillation.

Next, I ran across this video from Alan, W2AEW. As always, Alan does a great job of making the topic easy to understand.

And, finally, here’s a third take on using inductors and capacitors to build an oscillator:

I’ll be referring my students to these videos in the future. Hopefully, these videos will help them understand the concept, and thereby, have more fun with amateur radio.