Uploaded June 2024 | Updated September 2026, 3 weeks ago

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Vocademy - Free Vocational Education - vocademy.net

Errata:

I misread the oscilloscope trace I used to show the voltages and currents of the charastic curve of a tunnel diode--I misread by a factor of 10, seeing 8 mA as 80 mA. This throws off my current and impedance numbers by the same factor. This doesn't affect the explanation and would be correct for a tunnel diode that operates at the currents I mentioned. However, it turns out that the curve I misread is typical, making my numbers unrealistic. While relating this video to a real tunnel diode, decrease the currents by a factor of 10 and increase the impedances/resistances by the same factor.


Circuit simulator at falstad.com:

Tunnel Diode Relaxation Oscillator:
falstad.com/circuit/e-tdrelax.html

Click Circuits, Misc Devices, Tunnel Diodes, and LC Oscillator for the LC tunnel diode oscillator.

Yes, I was quoting Peter Schickele at the conclusion of the video.