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Thread: schematic diagram for ESR meter

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    Default schematic diagram for ESR meter



    hi
    looking to construct a digital ESR meter...looking for a good circuit diagram.did a ferw search on the net but ,most circuit diagram have parts missing or not enough information provided.

    Does anyone have a good circuit diagram that can be constructed for a digital ESR meter.

    thanks
    ash



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    Super Moderator Fernbay's Avatar
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    From the top result of the google search ( ) .............



    Reality is an invention of my imagination.
    ಠ_ಠ

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    I am NOT the Messiah! SystemRat's Avatar
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    Bob Parkers unit and circuit (bottom of page) are here or you could buy a kit




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    Default ESR meter calibration

    Hello everyone. Regarding the schematic diagram of Mr. Fernbay, how will you calibrate that ESR meter? Kindly please send me the information @ rleonen71@gmail.com. Thanx

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    Senior Member best4less's Avatar
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    When i made mine i just used some good caps and some old dogey caps

    This will be the best tool you will ever make
    When you do things right, people won't be sure that you have done anything at all

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    Quote Originally Posted by welzki View Post
    Hello everyone. Regarding the schematic diagram of Mr. Fernbay, how will you calibrate that ESR meter? Kindly please send me the information @ rleonen71@gmail.com. Thanx
    You could try measuring a know good capacitor with a resistor in series with it. Say 10 ohms or maybe less.

    EDIT: all the info is in the atricle.
    Last edited by rievax; 23-12-10 at 01:37 AM.

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    Just buy the ESR MKII kit from altronics

    they are an awsoem meter and it doubles as a low OHMS meter. cost is about $90.

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    Member AzzA's Avatar
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    Quote Originally Posted by ecu-man View Post
    Just buy the ESR MKII kit from altronics

    they are an awsoem meter and it doubles as a low OHMS meter. cost is about $90.
    Yes, absolutely the bees knees for working on on switch mode PSU's... TV's... and anything else for that matter.
    #I don't stereotype people, not like most of you do.#

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    Senior Member Reschs's Avatar
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    Quote Originally Posted by AzzA View Post
    Yes, absolutely the bees knees for working on on switch mode PSU's... TV's... and anything else for that matter.
    Built mine from the Altronics Kit many years ago as a novelty.
    Essential piece of test gear now.

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    Quote Originally Posted by welzki View Post
    Hello everyone. Regarding the schematic diagram of Mr. Fernbay, how will you calibrate that ESR meter? Kindly please send me the information @ rleonen71@gmail.com. Thanx
    use a prescision resistor.

    You will usualy find when the caps are faulty their ESR is very high compared to a good cap.
    Don't worry, it only seems kinky the first time.

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    Senior Member iwacelect's Avatar
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    Quote Originally Posted by AzzA View Post
    Yes, absolutely the bees knees for working on on switch mode PSU's... TV's... and anything else for that matter.
    dead right azza, anything with protection circuitry that wont let the bugger even start, the other way is to disable the protection circuit, but dont do it in front of the customers, they dont like to see smoke for some reason....

    dont know why, it makes it much easier to fix.
    When I explained to the guy what avatar I wanted, that wasn't what I meant!

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    Senior Member Oscar's Avatar
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    Disable protection to find the fault easy .Wouldnt dream of it lol.
    Good one IWAC


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