I don't understand inductors

Ya’akov

Joined Jan 27, 2019
10,240
I don't understand how current can be infinite.
In practice, current can’t be infinite just as resistance can’t be infinite (or zero). Everywhere in a practical circuit there are parasitic resistances, capacitances, and inductances that, in an “ideal“ component would not be there.

But, “ideal” anything is a lie we use to help reason about expected behaviors. When you read a description of something that is only true if the thing isn’t real you have to factor in what reality brings to whatever it is to understand the limits of that description.
 

nsaspook

Joined Aug 27, 2009
16,330
Well, not to start arguing, but
https://en.m.wikipedia.org/wiki/Mechanical–electrical_analogies

That also was what they were called in my physics "Electricity" course.
You can use whatever name you deem best.
I'm in basic agreement.
I'm just stating the obvious that the water analogy (what the OP talked about) is in a different category that doesn't really have Analogous Equations (that require a detailed understanding), only a poorly formed analogy of concepts. The effort to
try and convert those loose concepts into a Analogous Equations is much better spent directly on electrical circuit theory.
https://lpsa.swarthmore.edu/Analogs/ElectricalMechanicalAnalogs.html
 
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morzh

Joined Jan 18, 2017
38
I'm in basic agreement.
I'm just stating the obvious that the water analogy (what the OP talked about) is in a different category that doesn't really have Analogous Equations (that require an detailed understanding), only a poorly formed analogy of concepts. The effort to
try and convert those loose concepts into a Analogous Equations is much better spent directly on electrical circuit theory.
https://lpsa.swarthmore.edu/Analogs/ElectricalMechanicalAnalogs.html
I agree with the last sentence. Indeed, the best time spent is the time to understand the circuit theory.
Understanding physics (down to the basic electricity and magnetism course, which unfortunately is not taught to EEs in sufficient depth) would not hurt either.
 

Thread Starter

Lesaje

Joined Feb 6, 2024
9
Understanding physics (down to the basic electricity and magnetism course, which unfortunately is not taught to EEs in sufficient depth) would not hurt either.
Can you suggest to me any good learning materials about it? Preferably not on the level of Maxwell equations, because I'll forget them anyway)
I know how to take derivatives and integrals, but at the university I missed the subject where they talked about differential equations, and, to be honest, I’m not particularly eager to make up for this gap in knowledge at the moment)
My limit of understanding electricity is a video from Veritasium where it is explained in detail why the light bulb lights up in 1/c seconds
 

ApacheKid

Joined Jan 12, 2015
1,762
Can you suggest to me any good learning materials about it? Preferably not on the level of Maxwell equations, because I'll forget them anyway)
I know how to take derivatives and integrals, but at the university I missed the subject where they talked about differential equations, and, to be honest, I’m not particularly eager to make up for this gap in knowledge at the moment)
My limit of understanding electricity is a video from Veritasium where it is explained in detail why the light bulb lights up in 1/c seconds
https://www.allaboutcircuits.com/te...e instantaneous voltage drop across,L (di/dt).
 

ApacheKid

Joined Jan 12, 2015
1,762
we were talking about basic electricity and magnetism course, and not specifically inductors
Very well, then peruse Maxwell's work:
we were talking about basic electricity and magnetism course, and not specifically inductors
Well electricity "and" magnetism is a bit of a misnomer to begin with. There is only electromagnetism neither phenomenon exists in isolation.

https://www.wired.com/story/get-to-know-maxwells-equationsyoure-using-them-right-now/
 

sparky 1

Joined Nov 3, 2018
1,218
In the book "The art of electronics" it can be assumed that a student have a background in high school physics.
There are steps that a student might have taken in anticipation which have a mathematics counterpart.
Being comfortable with delta changes expressed in math is helpful especially when a lab demo is being analyzed.

If you apply math expressions that show that the simple principals seen in animation actually work then you would be more inclined to apply more Mathematics and physics, We can also see the back EMF of students enrolled in the Art of Electronics,when the class gets tough.

 
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