Any experiences with this ESR meter circuit?

[frako]

Re: Any experiences with this ESR meter circuit?

After looking more carefully at the schematic it looks like this meter is more suitable for measuring general purpose capacitors than low ESR ones, alltought I may have missed something important.
Unfortunately the page don't tell anything about the meter's usable measuring range (tought calibrating with 10 ohm resistor hints to gp caps).

[frako]

Re: Any experiences with this ESR meter circuit?

Hi all,
Has anyone built the mario001.de ESR meter? I'm quite interested in building it but I'm not so clear about the schematic and the attached file T3000.zip.
Can some body assist me.
1. Adjacent to the power source are two parallel circuits. The right circuit +5V is for IC5, connection to pin 1 and 8. The left one V+ is unknown and connected to pin 4 and 11. Any idea which IC is it?

It is most likely power connection to the op-amp (IC3), probably connects to the 12V rail

2. T3000 - is this the source code and for which IC?

There is no microprocessor in that schematic, the ICL7107 is a voltage meter IC. That file is the schematic/pcb-layout file from TARGET 3000 PCB-layout program apparently

http://www.mario001.de/elektronik/schaltungen/esrmeter.html

[jeff58]

Re: Any experiences with this ESR meter circuit?

Hi all,
Has anyone built the mario001.de ESR meter? I'm quite interested in building it but I'm not so clear about the schematic and the attached file T3000.zip.
Can some body assist me.
1. Adjacent to the power source are two parallel circuits. The right circuit +5V is for IC5, connection to pin 1 and 8. The left one V+ is unknown and connected to pin 4 and 11. Any idea which IC is it?
2. T3000 - is this the source code and for which IC?
Thanks
http://www.mario001.de/elektronik/sc.../esrmeter.html

[smason]

Re: Any experiences with this ESR meter circuit?

I love mine, works very well.

[timarlop]

Re: Any experiences with this ESR meter circuit?

I have ordered mikes micro ESR v4 meter and the price is very good and value for money.

How much ?

[Agent24]

Re: Any experiences with this ESR meter circuit?

But that ESR Micro is not a kit, is it?

[retiredcaps]

Re: Any experiences with this ESR meter circuit?

I have no affiliation with his business, nor have I evaluated one of his units (but want to!).

Preher Tech has a small write up, photos, and video of the ESR micro

http://preher-tech.com/esrmicro.aspx

[greekgurl]

Re: Any experiences with this ESR meter circuit?

Yeah! Retiredcaps has it! That's the link to the User's Manual. I've found his product page (russian) URL in my surf history from another computer. http://www.radiodevices.ru/esr/esr4.htm

I have no affiliation with his business, nor have I evaluated one of his units (but want to!). The website is in russian, so translate.google.com first and paste this URL into a russian to english box. He says it will ship anywhere...

Or here is a direct URL through google translation into english

[retiredcaps]

Re: Any experiences with this ESR meter circuit?

Does anyone else know what I'm talking about?

ESR Micro v4?

[Agent24]

Re: Any experiences with this ESR meter circuit?

Is it not one of those which devid21 posted?

[greekgurl]

Re: Any experiences with this ESR meter circuit?

I saw someplace that there is a Russian maker selling ESR kits with LCD displays. His meters look good! He recently updated to a version 2. I wish I had the details and website to post here. Does anyone else know what I'm talking about?

[devid21]

Re: Any experiences with this ESR meter circuit?

http://cgi.ebay.com/intelligent-ESR-...item336312af6d

[devid21]

Re: Any experiences with this ESR meter circuit?

Hello! I just finished the construction of the device, (with some changes in programming and hardware, because I used an PIC 16F690 instead of 16F873), and my impressions are not so good, because:
1) it takes too much time to charge (and measure) a larger C;
2) still, if you have enough patience, the result is quite accurate for capacitance measuring,
BUT :
3) because measuring is made by charging a C from nearly zero to 2.5V, it's more likely to not be able to use this meter in circuits, and also polarised capacitors may read different if connected "upside-down"!!!
4) also, no overvoltage protection are available!!!
5) precision in ESR measuring is only 0.1 Ohm !!!

So I decided to build another one, using the russian version http://pro-radio.ru/measure/3288/.

Sorry for my English.

Very good idea.

[sanduirina]

Re: Any experiences with this ESR meter circuit?

I finally thought it's time for an ESR meter, but it's hard to find any here, and shipping costs from the US unfortunately are often ridiculously high....and after all I'm a poor student.
Yesterday I stumbled upon this schematic, and it looks pretty decent, since it also measures capacitance and has a 2x16 LCD display.
has anyone here ever successfully built this one?
Any opinions welcome.

Hello! I just finished the construction of the device, (with some changes in programming and hardware, because I used an PIC 16F690 instead of 16F873), and my impressions are not so good, because:
1) it takes too much time to charge (and measure) a larger C;
2) still, if you have enough patience, the result is quite accurate for capacitance measuring,
BUT :
3) because measuring is made by charging a C from nearly zero to 2.5V, it's more likely to not be able to use this meter in circuits, and also polarised capacitors may read different if connected "upside-down"!!!
4) also, no overvoltage protection are available!!!
5) precision in ESR measuring is only 0.1 Ohm !!!

So I decided to build another one, using the russian version http://pro-radio.ru/measure/3288/.

Sorry for my English.

[devid21]

Re: Any experiences with this ESR meter circuit?

This is not spam.
It´s really working ESR meter(ESR/R/L/C/F).
http://**********/F/i034.**********/...b39b1.jpg.html
http://**********/F/s40.**********/i...041b8.jpg.html
http://**********/F/i078.**********/...5e0b4.jpg.html

[Agent24]

Re: Any experiences with this ESR meter circuit?

not yet.
last time i didn't have any rs232 level converters lying around so i used a simple low voltage parallel PIC programmer.
i couldn't find a decent burn tool that supports that simple programmer, and the one I used was rather crappy. somehow I messed things up, I guess. i'm not sure if I fried that PIC, and the whole thing has gone to the "unfinished projects" box for now.
I have the parts for a serial programmer now, so once I've passed that nasty oral exam I'm currently learning for I'm gonna dig it up and give it another try.


@gonzo: that first ELV circuit really looks good. i might give that a chance, too.

Did you ever get anywhere with either of those?

[devid21]

Re: Any experiences with this ESR meter circuit?

ESR/R/L/C/F meter
Way to measure the ESR of Bob Parker
http://vrtp.ru/index.php?act=categor...e&article=2484

[devid21]

Re: Any experiences with this ESR meter circuit?

ESR meter
C:1-150 000uF
ESR:0-10 Om
http://radio-hobby.org/news/article....ad&com_order=0

[devid21]

Re: Any experiences with this ESR meter circuit?

ESR meter
C:1-150 000uF
ESR:0-10 Om

[devid21]

Re: Any experiences with this ESR meter circuit?

ESR meter
C:0-150 000uF
ESR:0-10 Om
http://pro-radio.ru/user/uploads/68843.gif
http://pro-radio.ru/measure/3288