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Old 3rd October 2007, 04:10 PM   (permalink)
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nobody has to say anything?
i need directions so i can finish my project...
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Old 3rd October 2007, 04:36 PM   (permalink)
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what corrections can i make? how should i build it? what do i do wrong and i created this monster?

thanks!
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Old 3rd October 2007, 05:04 PM   (permalink)
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The original schematic has alot more parts than your version. Why not just follow the original design?
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Old 3rd October 2007, 05:09 PM   (permalink)
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as i said to a previous post... my try is unfinished...
i didn't knew if i'm doing it correctly and i got disappointed from the outcome! so i need some advices what to do and how to continue so a can make the PCB layout.
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Old 3rd October 2007, 05:48 PM   (permalink)
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Build it as specified, then try to simplify it. Your version does not even appear close. Why would you not build it like its original design? It's only one IC afterall.
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Old 3rd October 2007, 10:00 PM   (permalink)
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Quote:
Originally Posted by blueroomelectronics
Build it as specified, then try to simplify it. Your version does not even appear close. Why would you not build it like its original design? It's only one IC afterall.
as specified where? this is my first time i try to convert a schematic to PCB layout...
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Old 4th October 2007, 07:28 AM   (permalink)
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The one from the other forum that you link to in this thread, and until you hand wire a small prototype it's jumping the gun to design a PCB for it. It may not work.
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Old 5th October 2007, 06:02 AM   (permalink)
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Quote:
Originally Posted by blueroomelectronics
The one from the other forum that you link to in this thread, and until you hand wire a small prototype it's jumping the gun to design a PCB for it. It may not work.
ok i listened to your advice and i did a prototype with a PCB layout i found on this site:
http://www.yoreparo.com/foros/diseno...ico/80575.html

(use an online translator to translate the site to English)

The PCB layout i think it's the original schematic of Nuova Elettronica... and it is not exactly the same as the schematic in the previous page which it is supposed that it is improved and behaves better than the original design.

The prototype works but I used resistors of whatever tolerance i had in front of me and i don't know if that affected the way it works, i don't think that it does what it is intended to do... if you short the test probes it outputs 120uA and with most capacitors it also outputs 120uA in few cases it shows different values...the trimmer pot just lowers the output uA but doesn't give full range on my analog multimeter although i have it in the lower scale.

probably i should try some other ESR meters like ljcox's from the previous page... but none of them has PCB layout and it is overkill for a newbie to build it.

i don't know what to do now... should i change resistors with more accurate? or i should forget it? any ideas?



P.S if someone wants to see it i can upload photos...

Last edited by whiz115; 5th October 2007 at 06:13 AM.
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Old 5th October 2007, 03:45 PM   (permalink)
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ok... unfortunately i have to quit my project because i can't get the help i want..
at least i did one esr meter..even though probably it wasn't the best choose among the
other esr meters i have found or suggested to me.

Thanks everyone who said a word on this thread... and especially the guys who
give me their designs.

Last edited by whiz115; 5th October 2007 at 03:49 PM.
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LinkBack to this Thread: http://www.electro-tech-online.com/electronic-projects-design-ideas-reviews/32211-esr-meter-project.html
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Emil.Matei - Condensatoare - Testare ESR - Colectie de linkuri This thread Refback 23rd May 2008 05:02 PM
Emil.Matei - Condensatoare - Testare ESR - Colectie de linkuri This thread Refback 20th May 2008 10:09 PM

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