A practical demonstration of Lenz's law and back EMF in an inductive relay coil and how to solve it using a Freewheeling/Flywheel/Flyback/Snubber/Clamp diode. Also the downsides of clamping diodes, and switch arcing supression. Also a look at an AMAZING potential phenomenon you probably haven't seen before! Actually, two rather cool things you probably haven't seen before. Along with transistor ratings, transistor storage current, and Collector-Emitter breakdown voltage, there is a lot to unpack in this video.
This is a follow-on from the DC Transients Fundamentals video: https://www.youtube.com/watch?v=8nyNamrWcyE
00:00 - Recap of Relays, Inductors, Faraday & Lenz's Laws 02:30 - Relay Back EMF Explained 07:09 - The Flywheel analogy of Inductors 08:30 - Relay circuit demonstration 12:35 - 700V Back EMF! 14:43 - BJT Transistor Storage Time 17:03 - Back EMF Diode clamp demonstrated 19:06 - An AMAZING demonstration! 24:43 - Trap for young players 25:23 - DOWNSIDES of Back EMF Diodes 28:38 - BONUS cool effect of Back EMF diode DEMONSTRATED
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