modified 9 years ago

Strange voltage jump...

01:20:43

Turn on the switch, depending on how long you hold the switch on, it can jump up to about 20 volts...
Specs:
1V, 0A, 0 Ohms

published 9 years ago

hurz

9 years ago

Or more then 2000000000V! Actually in a perfect environment the back emf voltage is infinite. http://everycircuit.com/circuit/5883582507122688

Commodore64

9 years ago

What is strange about the laws of induction? This is how car ignition systems (used to ) work and the reason why you need to add a diode whenever you control a relay using semiconductors.

GingerKing

9 years ago

Yeah the sim shows ~20v, but setting the sim speed to 10ps/s gives you 2GV. It's because of what hurz said.

lenzrulz

9 years ago

Placing a diode across the coil appears to limit the voltage spike to 1.79V

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