ESR meter project from Nuova Elettronica

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Did anyone try **broken link removed** (Silicon Chip ESR & low resistance Meter, published February 2005) ?

Also, are there any more designs of LCR-ESR meters that are add-ons to DMM?
 

you can find L-only or C-only or ESR-only that are add on to dmm
but I've never seen an LCR or LCR-ESR meter without its proper display.
anyway the display is not the more difficult to implement after the meter !
 


Good links there .

Kripton2035 said:
you can find L-only or C-only or ESR-only that are add on to dmm
but I've never seen an LCR or LCR-ESR meter without its proper display.
anyway the display is not the more difficult to implement after the meter !
Click to expand...

Yeah, ulitmately, all of these are being so small these days that they can be put into one unit.

I have reduced the choices to Oleg Go C-ESR Meter, and if there is a way of DIYing the programming, the remaining details of many commercial ones like Blue, EVB, etc are also very available.
 

GaRBaLLz said:
It really looks nice! Are there any plans to increase the ESR frequency to 100khz or faster?
Nice job!
Click to expand...

Which one you're talking about? ;-) Some of them were designed specifically for in-circuit testing without desoldering, what why they are not 100KHz versions, more like as "constant current meters" (100KHz is not suitable for precise in-circuit measurements). Mentioned last on the list "Hungarian meter" is working at frequency of about 85 KHz (which is close enough to 100). There are some newer designs ideas of 100KHz of RLC-3 meter **broken link removed** , but so far I haven't seen it completed.

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helion said:
I have reduced the choices to Oleg Go C-ESR Meter, and if there is a way of DIYing the programming...
Click to expand...
What the problem with DIY programming? You can use any decent (including DIY) programmers to program the CPU.
If you're going to do some other projects with PIC controllers in the future, you may consider buying one of decent programmers for PICs (PICKit2, or PICKit3). There are plenty of them on E-Bay or online electronic shops.
 

yep the "chicken and egg" is still there ...
I remember programming my first pic on a breadboard with serial link to computer to make ... my first pic programmer !
it was a 16f84, I'm not sure this method could work for a 16f876 ...
 


I meant about reverse engineering the code of commercial ones like EVB, Blue, etc.
 

it will be easier to make your own esr meter than reverse engineer the blue esr meter ...
take less time, in a way cheaper.
 

Re: russia esr meter

I intended to make the Oleg-GO meter, but could not get all the components. Out of the to-try list, I could get all the components for the Silicon Chip 2005 one, but it's not tuning up at all. It's still on the bread board and not responsive to being calibrated. The DMM I'm using to tune this set up is picking up all odd frequencies from around. :lol:

Next in list will be this if I can get the components:

 

I had seen the meter price 2 million Baths (>600,000 dolars), that must tune in standard room. There are various source of error in outworld.
 

I did on bread board the Nuova Elettronica ESR meter based on the schematics and data as on this site: https://www.qsl.net/iz7ath/web/02_brew/15_lab/06_esr/index.htm

I'm using a DMM to measure the current. Funny things happening as usual. :lol:

I put any resistor across the DUT leads, it lights the LED. If I leave the terminals open, the DC current still measures the max on the DMM. 20 kΩ trimmer ie R21 at max resistance gives ~160 µAmp DC.

The frequency is 120 kHz, and the voltage at the DMM terminals is ~3.8V DC.

Any hints/ pointers that can throw light on what could be happening?
 
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R drop nearly short circuit(power circuit), This R call Reluctant than Resistor where AC source applied. Topology of circuits required to test some idea in HF design, Smith Chart is very role on against white noise etc.
 
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Found that I connected pin 10 instead of pin 9. Fixed now.
 

I think in commercial world call the ESR meter that the SD meter(Standard Deviation), The scope be manage by occupy.

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I think in commercial world call the ESR meter that the SD meter(Standard Deviation), The scope be manage by occupy.
 

Hi all,

I want to build this circuit from Nuiva Elettronica.
Have already an etched board from the link above (helion's post). I am wondering if this circuit works with LM324, has someone tested it yet?

Thanks
 

yes almost any opamp will do an lm324 is ok
you don't need an etched board, you can do it on a simple veroboard
 

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