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 Measuring Inductance

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Cliff Jones
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Cliff Jones

Join date : 2010-11-22

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PostSubject: A simple method to find Inductance   Measuring Inductance  Icon_minitimeFebruary 12th 2012, 10:08 am

Use a signal generator and an Oscope for this method. Heres the Link.

CLICK HERE

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MEZLAW
Senior Member 75+ Posts
Senior Member 75+ Posts
MEZLAW

Join date : 2012-10-28

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PostSubject: Measuring Inductance    Measuring Inductance  Icon_minitimeOctober 2nd 2014, 11:48 am

I found this interesting;

[You must be registered and logged in to see this link.]


I have not had time to try it yet.
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Cliff Jones
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Cliff Jones

Join date : 2010-11-22

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PostSubject: Re: Measuring Inductance    Measuring Inductance  Icon_minitimeOctober 7th 2014, 1:28 pm

I never did the math portion. I always just put a variable resistor in series with an unknown reactance and use a multimeter and measure the voltages across the resistor, then the unknown, and adjust the POT till both components measure the same voltage drop. Then use that measured resistance to then know what the reactance value is. The resistance value is the same as reactance value at that point.

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Cliff Jones
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Cliff Jones

Join date : 2010-11-22

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PostSubject: Re: Measuring Inductance    Measuring Inductance  Icon_minitimeOctober 28th 2015, 8:22 pm

A similar method can also be used with a voltmeter by remembering that impedance is a form of resistance.
And also reactance is a form of resistance.

Normally a resistor doesn't change value with frequency.
When you use a generator, that is variable, you can determine the reactance by hooking the unknown resistor, inductor, capacitor in series with a variable resistor.
When the unknown component voltage drop is read with a volt meter, the variable resistor is then adjusted till the variable resistor reads the same voltage as the unknown component.

When the voltages that are measured are found to be the same, the voltage then says that the resistance and the reactance is the same. So now without changing the variable resistor, measure the adjusted resistance.
This resistance value will be the same as the reactance value, because resistance value doesn't change with frequency normally.

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PostSubject: Re: Measuring Inductance    Measuring Inductance  Icon_minitime

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