Harmonics Explained: Audio & Radio Electronics
VIDEO CHAPTERS
0:00 Introduction
0:38 Signals and Systems Primer
1:35 Linearity and the Superposition Principle
4:01 Voltage Amplifier Example
6:11 Voltage Amplifier Simulation
8:46 What Causes Harmonics on the Power Grid
12:25 Undesirable Effects of Harmonics
13:16 Harmonics in Music
Intermodulation Explained (follow-up video): • Intermodulation Explained: Audio & Radio E...
Here I dive into the theory of what causes harmonics in systems. This includes a signals and systems primer, discussing linearity and the superposition principle. An example shows how harmonics occur when a voltage amplifier is driven into its non-linear region. Additionally, with the help of a circuit simulator, it is depicted how non-linear loads like rectifiers can cause harmonic voltages to be experienced elsewhere on the power grid. The video also touches on harmonics produced by musical instruments.
Eaton Electrical Videos on Harmonic Filters:
• 41 - How does a harmonic filter work? (How A Harmonic Filter Works)
• 4 - Harmonic solutions - how does a passiv... (Passive Harmonic Filter)
• 6 - Harmonic solutions - how does an activ... (Active Harmonic Filter)
Royalty-free footage used in this video:
https://pixabay.com/collections/harmo...
Amplitudes of the harmonics of a flute, oboe, and violin playing middle A source:
https://amath.colorado.edu/pub/matlab...
Bach sample source:
Bach Prelude and Fugue in C major BWV 846
Audio and MIDI file licensed under cc-by-sa Germany License
Name: Bernd Krueger
Source: http://www.piano-midi.de