AC Theory: The Mystery of the Coil

In this video on AC Theory we see what happens to a coil when it is connected to a DC supply and then an AC supply. It also features an explanation of why the current behaves the way it does, and gives a taster of what we can calculate using this information.

#joerobinsontraining #Electricaltrainingvideos #scienceandprinciples

[lexokeke]

Dear Joe, you have a talent for passing knowledge in the most basic and simplistic manner. You make mission impossible become possible. Thanks.

[paterson]

Best descriptions I have found on the Tinternet about this subject by a very long way. A simple subject to understand with the right teacher. A very hard one to understand with the wrong one. Thank you so much for making this easy to follow. Great pace, great info and not daunting with yourself at all.

[ianclark]

And the series rolls on. Joe Robinson training features highly on my CPD log. It's always great to see new ways of delivering a subject and your explanations are great for the learners to follow up with in support of their learning.

[JPElectric]

Really helpful, clear and informative videos. Your series of videos on electrical theory have been really interesting.
Its been a long time since I was a college. You forget things over the years. Good to re visit it...

[markrowland]

Excellent video. Very clear and well explained.

[AlanLumsden]

Superb teaser for the juicy stuff to come 👍 Nice 1 Joe 😊

[tedlahm]

Clear concise explanation. EXACLY what we all have come to expect from you. A thank you.

[bernardocisneros]

Very good and clear explanation. Thank you!

[no_short_circuit]

Thanks Joe. I've followed all your training videos, which for me have been great but inevitably lead to more questions! Is this Lenz's Law? You mention RMS values, will you be doing a video on that?

[ravindulakshan]

Many thanks sir.. You are doing a great work....This is very helpful to us.. I wish you to success your all works..

[Sergey]

What an epic end of the video!👏🏻Absolute love it.Well done Joe!

[dharmeshrana]

Hello Joe...
Please help me to understand transformer less power supply design for lightning LEDs... 🙏

[taxisteve]

Great videos any chance you can do a couple of videos on 2365 level 3 that would be great thanks

[peterbirdie]

6:20 Joe, does the presence of the secondary coil have any influence on current reading?

[jvon]

It's crazy how I can study this stuff and search for months to learn something then I find that one person who just makes everyone e else seem like they are intentionally confusing to keep you stuck in a rut. I'm studying electrolysis and magnetic pulsing. This gives me a great understanding. However what's keeping the electricity from destroying your power suplies?

[SlobodanCukTESLAco]

This video should be made with scope showinbg actual current waveforms in DC and AC circuit. Current multimeter hides the real effects.

[SlobodanCukTESLAco]

Grossly misleading lecture!
The inductor is made of copper wire which has small resistance. This resistance is limiting current in DC circuit. If this coil has s bery few turns your voltage will cause huge current and burn the coil.
With ac source infuctance will limit ac current to very small current and coil resistanvce resistance iscirelevant.

[erwinconxepts]

a very boring basic "mystery"? this type of teachings produces engineers with stagnant knowledge for decades that keeps doing the same thing over and over again