Products > Test Equipment
Does anyone here use the Peak Lcr45? Max Inductance?
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rwgast_lowlevellogicdesin:
The only reason im leaning tword the lcr45 is becuase it will give you an imedance reading. I can not find a meter under 200 bucks that does that. Is there an easy way to calculate Z using the info given on most any handheld meter? I just noticed the lcr45 doesnt have any frequency options under 15khz so thats now a no go.
Martin72:

--- Quote --- I can not find a meter under 200 bucks that does that.
--- End quote ---

Oh yes, there are some who can.
Among the "prominent" ones are the DE5000 or ET44xx from East Tester, but also the ST42 measuring tweezers.


--- Quote --- Is there an easy way to calculate Z using the info given on most any handheld meter?
--- End quote ---

This requires the exact measurement frequency and then conversion (e.g. XL= 2*pi*f*L)
And the RDC value for the real component of the impedance.
rwgast_lowlevellogicdesin:
Well i figured out the meter i intend to buy after a lot of looking! An east tester et42, it does bias voltage, and calculates Z. For 200ish it seems like the most feature packed meter you can get! I dont understand why Z is omitted from most of these meters, its not like Z requires any hardware the de5000 doesnt have, its much more helpful than esr in my opinion. I mean the de5000 apparently does calculate Z but its only displayed in the desktop app that has a broken link and requires an overpriced and at this point rare cable. The ir cable for my fluke 289  costs less lol.

At some point i aspire to build a desktop impeadence analyzer/lcr that will measure a few mhz at higher voltages, i even ordered all the math books i need to help  catch me up but for now i just need something to fill in the info i cant get from bode plotting. In the world of great dds chips and cheap fpga/200mhz micros i cant figure out why there isnt anything like the Bode FRA for 500 bucks.
egonotto:

--- Quote from: rwgast_lowlevellogicdesin on August 11, 2024, 10:19:11 pm ---When you buy a standard inductor, and it is idk 10microHenerys lets say, how do they get that number. I know that there usually tested at 100khz or whatever but what is the standard voltage used?

I really wish there was something like the Bode frequency analyzer at a reasonable price. Once you get to RF and everything is 50ohm and you can use a VNA measuring this stuff is so much easier. I will probably never need to wrap or use an inductor in a circut using 2v or less.

Lets say im working on a 50v 500khz boost converter and i need to wrap a 10microHenery as part of the circuit, is there any way to test my inductor without breaking the bank. At this point i feel like there are a lot of situations where you just pick a core material use a winding calculator and call it a day!

--- End quote ---

Hello,

with the Analog Discovery (3) this works reasonably well.
I have used a 1 uH coil.

With a generator and a scope (with average) and some software, this is also possible.

Best regards
egonotto
Martin72:
Today I measured a small transformer with the Peak LCR, once with the LCR40 and then with the LCR45.
First LCR40...
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