modified 5 years ago

Can anyone explain the spike when you open the switch

01:42:12

Spike when switch is open

published 5 years ago

digital_electronics

5 years ago

Collapsing EMF, courtesy of transformer, producing up to 2KV spikes.

giomix

5 years ago

Digital, why if I set timw speed more slowly it produced 100kV spikes? Collapse is time depending?

digital_electronics

5 years ago

My answer was relative to his sim settings, however, time definitely affects spike voltage, play around with different sim speeds and time constants for varying spike voltages.

thedhuff

5 years ago

Thanks for the explanation.

digital_electronics

5 years ago

You’re welcome...👍

giomix

5 years ago

Thedhuff, remember this not in real.

digital_electronics

5 years ago

A sim speed of 1 s/s is a close approximation of reality.

2ctiby

5 years ago

There are real and unreal aspects involved here ... Firstly, the mathematics of extremely high voltage is very real in this situation. The actual happening due to that reality is that a spark is produced which is not seen in the mathematics or in the EC simulation. There is also a restriction of current in a real inductor wire. Both aspects are correct and need to be appreciated in their relevance. (as a side issue ... The volt meter here is a pointless unused addition).

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.