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Old 16th June 2013, 07:03 PM   #1
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Default Inductance meter

I need a low cost( $40/$70) inductance meter mostly to built Xover. I try to avoid all in one meter since I get a good capacitance meter for last 20years.
LCR or only inductance will do. There is a lot on Ebay !
May be there is one not to bad )
PS: if one just over my target price is a bargain/for price please let me know.
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Old 16th June 2013, 07:14 PM   #2
Elvee is offline Elvee  Belgium
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This one is not a real (stand alone) inductance meter, it is just an add-on for a multimeter that you can build for less than 10$, but it does actually work and is not a toy: it has better vector discrimination than many commercial units.
It can be helpful while looking for a complete instrument.
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Old 16th June 2013, 07:33 PM   #3
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How about these? LC / LCR Meters in the Tools & Supplies Department at Parts Express | 540

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Old 16th June 2013, 07:54 PM   #4
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Be wary of cheap L meters.
I got caught out when doing some SMPS design with a cheap meter.
The meter said it was 120uH when actually measuring it in a circuit oscillating it was only 10uH !!! No wonder I was getting overloads in my circuit.
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Old 16th June 2013, 09:14 PM   #5
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ApexJr has one for $50. I have no idea about its performance.
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Old 16th June 2013, 09:45 PM   #6
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Pretty nice but perhaps too expensive?

http://www.home.agilent.com/en/pc-15...0&cc=SE&lc=eng
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Old 16th June 2013, 11:06 PM   #7
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I use my sound card to measure inductance.
There are quite a few free software's out there that can do this with a simple interface resulting in a fairly good amount of accuracy.
Here is a discussion where I had put these to a test,

Exploring Visual Analyser (VA)

and here as well,

New speaker impedance tool, SimpeS

Besides the above programs mentioned in those threads REW v5 beta 17 also does a super great job at impedance measurements as well.

FWIW

jer

Last edited by geraldfryjr; 16th June 2013 at 11:11 PM.
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Old 17th June 2013, 02:07 AM   #8
dangus is offline dangus  Canada
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LC meter kits for $99
L/C Meter II, a digital inductance meter / capacitance meter.

Or, since the plans were published in Radio-Electronics, it has inspired various copies and improvements. For example:
https://sites.google.com/site/vk3bhr/home/index2-html

Or just buy one ready to go from China on eBay, starting at around $20 shipped. (search for LC meter)
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Old 25th June 2013, 02:53 AM   #9
RNMarsh is offline RNMarsh  United States
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L needs to be measured at the freq being used. Most L meters only give one test freq and it might not give you the same value at the in-use freq of operation. But if you use it for low freq xover and not above a few KHz, it will be close enough.

Thx-RNmarsh
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