how to make inductor? (2.2nH)

swg?,turns requerd,length

Look up formula for air coil inductor, standard formulas. Then get some insulated wire and coil one up. Now you didn't explain any of the parameters such as resistance, capacitance, size, power.

In any event start by Yahoo or Google, " air coil inductor formulas." There is a Wiki page which is pretty good. One formula:


Short air-core cylindrical coil[12] L= (r^2 * N^2) / {9r+10A}

L = inductance (µH)
r = outer radius of coil (in)
l = length of coil (in)
N = number of turns
A = length of winding ( in inches )

Click the "Tools" tab at the top of this page - you will find many useful design tools, including inductance.

Like the calculators what langauge did they use to create the graghics gui Not being able to see the source Was it svg with javascript encoding

Cheers Mark

A rule-of-thumb is 1 cm of wire has 10 nH inductance. For 2.2 nH you need a straight wire close to 2 mm.

True. Though if that length is above a plane or parallel return conductor the inductance diminishes. But it just show you really don't need much for 2.2nH.

The problem is once the inductor is fabricated, how would the person measure it (of course equipment or actual circuit response). Just wondering if the person would do that, hope so.

How i can make an inductor of 2.2nH and 1nH. mPlz help me out i am not getting it plz....

Click the “Tools” tab at the top of this page – you will find many useful design tools, including inductance.

Suppose you want to make an inductor which produces an inductance of 10 μH. The diameter of the coil is 1 inch and the coil length is given by 1.25 inches. You will have to find the number of turns of the coil.Thus substituting the values in the above equationL = 10 inchesd = 1inchl = 1.25 inchesn = √{L [18d * 40l]} / d = 26Thus, the number of turns of the coil will be 26.Number of turns/inch = 20.8For more information visit us: http://www.miracle.net.in/inductor/