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where can i find (buy)inductance meter to measure in nH?

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ramy gad

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vk3bhr

where can i find inductance meter to measure in nH?
 

Borber

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inductance meter

If you are satisfied with 1nH resolution you can build yourself an LC meter. On the web there are a lot of projects for LC meter. It will cost you a PIC MCU, LCD display, LM311 and few other parts.
 

    ramy gad

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ramy gad

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rf inductance meter

i try the lm311 project but it doesn't work
the lm311 doesn't osc
 

Borber

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nh inductance meter

These circuits, projects, work very well.
 

    ramy gad

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ramy gad

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lm311 projects

have you try the lm311 project with yourself?
may be there is a problem in the lm311 found in my local market in egypt
 

Borber

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hp16470 inductors

Yes I have build a few of them. They all worked satisfactory.
 

    ramy gad

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ramy gad

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inductor q-meter vna

plz send me the exact one that you build
 

Borber

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inductance meter with 1 nh resolution

One of them is:
**broken link removed**
 

    ramy gad

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ramy gad

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lm311 osc testing

i will build it and feed you back
Thanks for your help
 

crenyen

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ironbark.bendigo.latrobe.edu.au/~rice/lc

If you have Vector Network Analyzer, you can use it in S11 mode and watch the Smith Chart to see what value the R or L or C is.
 

vfone

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nh meter

One of the most used professional inductance meters was HP16470 ($1000 average price on eBay).
Definitely I will go for one of the options mentioned above (AADE or VK3BHR), that I’ve tested myself and works very well.
You can even buy one from AADE. One hundred bucks means nothing for the results that you’ll get.
 

boy

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buy inductance

I think you should use a network analyzer. It can analyze the inductor with much higher frequency and you can also de-embed the test jig parameter. Also, it will give you some important paramters such as self resonance frequency (SRF)
 

sergio mariotti

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inductor vna

Me too i think a VNA may be used as inductance meter (also a capacitance meter).
It give accurate information about inductance and self resonant frequency, but poor accuracy about Q.
The problem of Q accuracy is known also if you are using HP16470. Q depend on the maintenance state of the HP standard coils.
 

ramy gad

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nh resolution inductance meter

thank you Borber
i have tried this

h**p://ironbark.bendigo.latrobe.edu.au/~rice/lc/index.html

and it work very well:D
 

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