Topic

back emf

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1. 

   1 EEVblog 1409 - The DANGERS of Inductor Back EMF

   EEVblog 4 people · 4 months · since Jul 2021

   Dave Jones shows the voltage spike an inductor or relay coil produces when switched off, which explains why flyback diodes are fitted across coils and motors.

2. 

   2 Back EMF High Voltage Spikes on the Oscilloscope - Part 1

   electronicsNmore 3 people · 4 months · since Mar 2016

   A scope demonstration of the voltage spike an inductor or relay coil produces when switched off, used to explain why flyback diodes matter.