Just an Inductor - Page 1
Forum section: electronics / beginners

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 16, 2013, 11:03:03 pm
content: Hello recenlty i wanted just to make an inductor (air cored) out of magnet wire but i run into some research problemsI got lost into wikipedia info and even when i got the most things i needed (Formulas and some info) i got more confused....From thishttp://en.wikipedia.org/wiki/InductorI got to thishttp://en.wikipedia.org/wiki/Magnetic_permeabilityand i think that all this time this was the part i was missing but i got that thing with the Nagaoka coeficient in the formulaAnd i still cant find the solution to my problemI just want an inductor coil with no specific specs just about 100-800 uH i dont care about its resistance but i only need it to have many energy capacitance!Please help the lost guyThank you

author: c4757p
author_rank: Super Contributor
timestamp: May 16, 2013, 11:29:42 pm
content: https://www.google.com/search?q=air+core+inductor+calculator

author: c4757p
author_rank: Super Contributor
timestamp: May 16, 2013, 11:31:24 pm
content: Quote from: ChrisGreece52 on May 16, 2013, 11:03:03 pmDamn... I thought for a minute the forum got a math formatting capability. How appropriate that would be for an electronics forum! But it's just a picture

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 17, 2013, 10:27:40 am
content: Quote from: c4757p on May 16, 2013, 11:31:24 pmSorry fo the picture i know it seems like its has been written anyway thanks for your comment

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 17, 2013, 10:28:55 am
content: Quote from: c4757p on May 16, 2013, 11:29:42 pmThanks the second link was what i i wanted ... i tried to google that but i only clicked the first link and it was not so good.Thank you.

author: codeboy2k
author_rank: Super Contributor
timestamp: May 18, 2013, 09:50:15 am
content: Quote from: c4757p on May 16, 2013, 11:31:24 pmI usetexify.comin this forum. This is what I have done in the past.Enter the following when you are posting a reply:Code:http://www.texify.com/img/\LARGE\!x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.gifYou will see this is the preview and post...Here's the OPs air core inductance formula using texify.com :Code:http://www.texify.com/img/\LARGE\!L = \frac{1}{l} \mu_0 K N^2 A.gif

author: IanB
author_rank: Super Contributor
timestamp: May 18, 2013, 05:17:17 pm
content: Quote from: codeboy2k on May 18, 2013, 09:50:15 amThat didn't seem to work, but maybe this will?

author: c4757p
author_rank: Super Contributor
timestamp: May 18, 2013, 05:56:29 pm
content: Quote from: codeboy2k on May 18, 2013, 09:50:15 amOoh! Nice. I am going to have to remember this one!

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 19, 2013, 09:45:18 am
content: Quote from: codeboy2k on May 18, 2013, 09:50:15 amThanks that was an awesome suggestion

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 19, 2013, 09:46:42 am
content: Quote from: IanB on May 18, 2013, 05:17:17 pmIn wikipedia says that the K stands for the Nagaoka coeficience..... whats this(i did not learn this in school and from the wikipedia refferences i went to a pdf file..

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 19, 2013, 09:48:36 am
content: Quote from: c4757p on May 18, 2013, 05:56:29 pmIts pretty cool indeed i gave it a go and here are the results.

author: IanB
author_rank: Super Contributor
timestamp: May 19, 2013, 10:02:36 am
content: Quote from: ChrisGreece52 on May 19, 2013, 09:46:42 amTake a look here:http://info.ee.surrey.ac.uk/Workshop/advice/coils/air_coils.html

author: IanB
author_rank: Super Contributor
timestamp: May 19, 2013, 10:08:54 am
content: Quote from: ChrisGreece52 on May 19, 2013, 09:48:36 amIn algebra we show multiplication just by writing the two letters next to each other, no need for the special "*" symbol. Also the speed of light is usually written as a lowercase c rather than an uppercase c. So:

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 19, 2013, 10:37:04 am
content: Quote from: IanB on May 19, 2013, 10:08:54 amFirst thats for your notification ... when i right by hand i preffer just sticking 2 letters together but when i am writting formulas (in google to understand what the formula does or generally) in pc i prefer using "*" to show that the 2 letters are being multiplied together.And second i had no idea..... i remembered that it was symbolised with an Upercase C (It was never thaught in school we only do classic physics not modern one ... (even if 58 years have passed since Albert Einsteins death.) i am not so sure why.... but a quick estimation of the educational system here is that it sucks.)

author: ChrisGreece52
author_rank: Frequent Contributor
timestamp: May 19, 2013, 10:37:34 am
content: Quote from: IanB on May 19, 2013, 10:02:36 amThank you that will be very helpful