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.<br />Also a look at an AMAZING potential phenomenon you probably haven't seen before!<br />Actually, two rather cool things you probably haven't seen before.<br />Along with transistor ratings, transistor storage current, and Collector-Emitter breakdown voltage, there is a lot to unpack in this video.<br /><br />This is a follow-on from the DC Transients Fundamentals video:<br />https://www.youtube.com/watch?v=8nyNamrWcyE<br /><br />00:00 - Recap of Relays, Inductors, Faraday & Lenz's Laws<br />02:30 - Relay Back EMF Explained<br />07:09 - The Flywheel analogy of Inductors<br />08:30 - Relay circuit demonstration<br />12:35 - 700V Back EMF!<br />14:43 - BJT Transistor Storage Time<br />17:03 - Back EMF Diode clamp demonstrated<br />19:06 - An AMAZING demonstration!<br />24:43 - Trap for young players<br />25:23 - DOWNSIDES of Back EMF Diodes<br />28:38 - BONUS cool effect of Back EMF diode DEMONSTRATED<br /><br />Forum: https://www.eevblog.com/forum/blog/eevblog-1409-the-huge-trap-of-inductor-back-emf/<br /><br />Subscribe on Odysee: https://odysee.com/@eevblog:7<br />EEVblog Web Site: http://www.eevblog.com<br />The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2<br />EEVdiscover: https://www.youtube.com/eevdiscover<br />Support the EEVblog through Patreon! http://www.patreon.com/eevblog<br /><br />AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g<br />Buy anything through that link and Dave gets a commission at no cost to you.<br /><br />Donate With Bitcoin & Other Crypto Currencies!<br />https://www.eevblog.com/crypto-currency/<br /><br />T-Shirts: http://teespring.com/stores/eevblog<br />#ElectronicsCreators #Tutorial #Inductors
