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:
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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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EEVblog 1409 - The DANGERS of Inductor Back EMF
Теги
eevblogvideoback emfinductors explainedinductors in circuitsinductor vs capacitordiodefreewheeling diodeclamp dioderelayrelay back emfflywheel diodeflyback diodeflyback diode explainedflyback diode relaytransistor breakdown voltagerelay coillenzs lawlenzs law of electromagnetic inductionlenzs law explainedfaradays lawfaradays law of electromagnetic inductionrc snubber circuitsnubber diode