How to Design a Coil for Specific Inductance

How to design a coil for a specific inductance that you need, including how to calculate the inductance and where to find an online inductance calculator. This goes through all the parameters: number of turns, area, length and relative permeability as well as mentioning some other factors like capacitance, frequency and coupling.

The webpage with the inductance calculator is here:

This video was made possible in part by these Patreon supporters:
Jonathan Rieke
James Padden
Juliusz Wojtyga

See also:

How to Make Capacitors - Low Voltage Homemade/DIY Capacitors

How to Make Tesla Coil - Small Spark Gap Tesla Coil

How to Make/Build a Crystal Radio

Follow behind-the-scenes on:

[learnerlearns]

Superb presentation Sir! If school was like this, the world would be a smarter place.

[h.sapienstechnologicus]

I’ve seen ALL of YouTube’s inductor videos and this IS THE BEST of them all. For me. I understood everything you said. Solid content.

[crcat]

This is quality, crystal-clear explanation. This makes it clear how to experiment and how to achieve a desired goal. Thank you!

[aborgeshonorato]

I love you 💓 and your channel.
I am teaching Physics in India for the first time and your channel is a huge resource!! I can't believe that you are providing it for free. Thank you and God bless 🙏

[itaylavi]

the best explanation about inductors design ive ever seen

[stevedoubleuB]

Excellent tutorial Sir. As inductors have never been my strong subject, my brain was overheating a little, but i'm gonna stick with it!! Thank you.

[MongrelShark]

Great Video. I wish there was a guide like this when I was a kid :) No doubt I will be linking to this one a lot :)
I especially like the mentioning of all the Formulas, including the thumb rules and rounding off's that regularly get used when designing coils. Those little details can get a lot of people stuck on the theory unnecessarily. When they would learn more by just forging ahead and giving it a go so they can see how it works.

[z]

OMG. You must be a teacher. If not then you would make a great one. I always learn a lot from your videos. You are the best i have come across so far on the internet. And the internet is quite large.

[thepricklyseed]

Thank you very much for making this video and the online calculator.

[hughh]

Great Video, your crystal radio series has got me building them.

[KJFMZ]

The video I didn't know I've been looking for for a year. 👌

[WTF_BBQ]

I love the way you explain it. Makes it simple to understand. The first time I glanced at the formula, it was very intimidating until you broke it down.

[markjulius]

Wow. Finally someone who knows what the hell he's talking about. I've asked so many people about everything in this video, and almost no one could tell me the science behind making a coil. Nice job.

[sydieonshaw]

THANKS!!!! I was looking for this for a long time... I’m building my own we n low-pass crossover

[bharatkukreti]

What an interesting way to simply the inductance making...luv it

[rambo]

Nice this help to find out more about coils, and i might eventualy learn to make my own circuts after my desiger

[keghnfeem]

That is great. I need to make a delay line with inductors and this info will really help.

[electronicsNmore]

Great video! I've used a few good online inductance calculators over the years. Having a good DMM with an inductance range makes life very easy. :-)

[jonathanhess]

Man you made this too late for me because I learned this over the summer.... Man you explained it so much simpler. Thanks :D

[gazzabro]

This is exactly what I was looking for, thank you.