But arcing involves energy. Where does the energy come from? It is possible to show
that the energy that gets dissipated across the switch is 0.5(1 k
2
)L
p
I
p
2
J. This comes from
the magnetic energy storage in the coupled coil system.
The sudden change of secondary current from I
s
to results in a sudden change
across the load voltage from RI
s
to R. There are practical applications in which the
second term dominates and makes the load voltage a negative voltage with enough
magnitude to destroy the load if the load happens to be sensitive electronic equipment. This
large negative voltage decays exponentially with a time constant of L
s
/R s. By the time ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.
Julian F.
Head of Cybersecurity
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.
Addison B.
Field Engineer
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.
Amir M.
Data Platform Tech Lead
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.