EEVblog 1409 - The DANGERS of Inductor Back EMF

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: 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 Forum: Subscribe on Odysee: @eevblog:7 EEVblog Web Site: The 2nd EEVblog Channel: EEVdiscover: Support the EEVblog through Patreon! AliExpress Affiliate: Buy anything through that link and Dave gets a commission at no cost to you. Donate With Bitcoin & Other Crypto Currencies! T-Shirts: #ElectronicsCreators #Tutorial #Inductors Теги: eevblog,video,back emf,inductors explained,inductors in circuits,inductor vs capacitor,diode,freewheeling diode,clamp diode,relay,relay back emf,flywheel diode,flyback diode,flyback diode explained,flyback diode relay,transistor breakdown voltage,relay coil,lenzs law,lenzs law of electromagnetic induction,lenzs law explained,faradays law,faradays law of electromagnetic induction,rc snubber circuit,snubber diode