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    #41
    Re: ESR meter for a novice

    I'm sorry but i have to back up devid21 on this one - i have designed a PCB for the same meter, built it, and it works just fine. It IS accurate enough on a larger meter movement such as that found in older multimeters, besides, if you feel you need more accuracy, you can always hook a DMM set on the 200mV scale in parallel with the analog meter. Then all you need is to make a nifty table to decode the DMM's voltage reading into resistance values.

    I can notice bad caps even when operating it into a VU meter, because when the cap is in good condition, measuring it is accompanied by a rewarding click sound as the meter hits the peg due to overshoot. If the cap is anything less than perfect, the meter won't click even if it does go full scale.
    Originally posted by PeteS in CA
    Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
    A working TV? How boring!

    Comment

      #42
      Re: ESR meter for a novice

      Don't get your tools from Playschool.

      The upper and lower ends of the movement are inaccurate and being more precise doesn't make it more accurate.

      .
      Mann-Made Global Warming.
      - We should be more concerned about the Intellectual Climate.
      -
      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
      - Dr Seuss
      -
      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
      -

      Comment

        #43
        Re: ESR meter for a novice

        Sorry,Bob,the scheme from a russian site
        On other sites have long been ampty.
        If you have time,make this ESR meter
        It measure on the sine wave.
        The lower limit of measurement:20-30 milliohms
        Com you compare with your ESR meter.
        Good luck
        http://www.remserv.ru/cgi/magazine/i...1/measure/1855

        Comment

          #44
          Re: ESR meter for a novice

          Originally posted by devid21 View Post
          Rus Mike wrote:
          The criteria is about-more than 1000uF-ESR<0,1ohm,100-1000uF-0,2-0,5ohm is normal.
          In that case Rus Mike doesn't know his ass from a hole in the ground.
          .
          Mann-Made Global Warming.
          - We should be more concerned about the Intellectual Climate.
          -
          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
          - Dr Seuss
          -
          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
          -

          Comment

            #45
            Re: ESR meter for a novice

            Originally posted by devid21 View Post
            Sorry,Bob,the scheme from a russian site
            On other sites have long been ampty.
            If you have time,make this ESR meter
            It measure on the sine wave.
            The lower limit of measurement:20-30 milliohms
            Com you compare with your ESR meter.
            Good luck
            http://www.remserv.ru/cgi/magazine/i...1/measure/1855
            Huh?
            36 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far....

            Comment

              #46
              Re: ESR meter for a novice

              Originally posted by smason View Post
              Huh?
              Ignore that one. He's just a twit that doesn't know what low ESR is, yet, he insists on handing out advice about how to measure it.
              .
              Mann-Made Global Warming.
              - We should be more concerned about the Intellectual Climate.
              -
              Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
              - Dr Seuss
              -
              You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
              -

              Comment

                #47
                Re: ESR meter for a novice

                Before you send a message,check your ass.

                Comment

                  #48
                  Re: ESR meter for a novice

                  Originally posted by devid21 View Post
                  Before you send a message,check your ass.
                  OK, I've done that. Now what?
                  Attached Files
                  It is a good shrubbery. I like the laurels particularly...

                  Comment

                    #49
                    Re: ESR meter for a novice

                    Originally posted by Bob Parker View Post
                    OK, I've done that. Now what?
                    ROFL!! I just sprayed coffee on my keyboard.
                    36 Monitors, 3 TVs, 4 Laptops, 1 motherboard, 1 Printer, 1 iMac, 2 hard drive docks and one IP Phone repaired so far....

                    Comment

                      #50
                      Re: ESR meter for a novice

                      Originally posted by devid21 View Post
                      Before you send a message,check your ass.
                      Don't need to.
                      I know where mine is.
                      .
                      Mann-Made Global Warming.
                      - We should be more concerned about the Intellectual Climate.
                      -
                      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                      - Dr Seuss
                      -
                      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                      -

                      Comment

                        #51
                        Re: ESR meter for a novice

                        Originally posted by PCBONEZ View Post
                        In that case Rus Mike doesn't know his ass from a hole in the ground.
                        .
                        And why do you ask to send its meter?
                        Can you also imagine ordered?
                        Do i need this digital toys?
                        A simple analog ESR meter does too.

                        Comment

                          #52
                          Re: ESR meter for a novice

                          You can check the capacitors without measuring ESR.
                          http://members.iinet.net.au/~geoffg/Measuring_ESR.html

                          Comment

                            #53
                            Re: ESR meter for a novice

                            Originally posted by smason View Post
                            ROFL!! I just sprayed coffee on my keyboard.
                            I'm delighted that someone here understood what I meant. I hope your keyboard's OK.
                            It is a good shrubbery. I like the laurels particularly...

                            Comment

                              #54
                              Re: ESR meter for a novice

                              Originally posted by devid21 View Post
                              You can check the capacitors without measuring ESR.
                              http://members.iinet.net.au/~geoffg/Measuring_ESR.html
                              Further evidence you are a clueless wonder.

                              Yes, you can check caps without measuring ESR,,
                              - however, you won't know if the caps are any good.

                              The link you provided shows how to measure ESR with an o'scope.
                              He -IS- measuring ESR.
                              - But with equipment MORE expensive than an ESR meter.

                              The whole point of having an ESR meter is to avoid needing a scope to check ESR. - DUH!
                              .

                              .
                              Last edited by PCBONEZ; 11-14-2010, 02:20 PM.
                              Mann-Made Global Warming.
                              - We should be more concerned about the Intellectual Climate.
                              -
                              Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                              - Dr Seuss
                              -
                              You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                              -

                              Comment

                                #55
                                Re: ESR meter for a novice

                                Originally posted by Bob Parker View Post
                                I'm delighted that someone here understood what I meant. I hope your keyboard's OK.
                                Definitively understood here too Bob.
                                Didn't spray coffee, but did call the wife in to share it..
                                .
                                Mann-Made Global Warming.
                                - We should be more concerned about the Intellectual Climate.
                                -
                                Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                - Dr Seuss
                                -
                                You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                -

                                Comment

                                  #56
                                  Re: ESR meter for a novice

                                  Originally posted by devid21 View Post
                                  And why do you ask to send its meter?
                                  Can you also imagine ordered?
                                  Do i need this digital toys?
                                  A simple analog ESR meter does too.
                                  When you get better at English I might understand your imagined points/implications.

                                  There are currently NO commercially available or DIY plans/kits for an analog ESR meter that is capable of measuring ESR on low ESR caps.

                                  Th3_uN1Qu3's project in the other thread is interesting but what he is proving is that it costs more $$ in parts and time to build an analog ESR meter for low ESR than it would cost to just to buy a digital meter kit.
                                  - He's already spent much more $$ in hours lost than buying a kit would have cost.
                                  At this point he still doesn't have a working prototype and when he does it STILL won't be as accurate as a digital meter for low ESR.
                                  [Young people with no real worldly responsibilities are like that. I know, I was one of them once.]
                                  .
                                  Last edited by PCBONEZ; 11-14-2010, 02:56 PM.
                                  Mann-Made Global Warming.
                                  - We should be more concerned about the Intellectual Climate.
                                  -
                                  Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                  - Dr Seuss
                                  -
                                  You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                  -

                                  Comment

                                    #57
                                    Re: ESR meter for a novice

                                    Originally posted by PCBONEZ View Post
                                    When you get better at English I might understand your imagined points/implications.

                                    There are currently NO commercially available or DIY plans/kits for an analog ESR meter that is capable of measuring ESR on low ESR caps.

                                    Th3_uN1Qu3's project in the other thread is interesting but what he is proving is that it costs more $$ in parts and time to build an analog ESR meter for low ESR than it would cost to just to buy a digital meter kit.
                                    - He's already spent much more $$ in hours lost than buying a kit would have cost.
                                    At this point he still doesn't have a working prototype and when he does it STILL won't be as accurate as a digital meter for low ESR.
                                    [Young people with no real worldly responsibilities are like that. I know, I was one of them once.]
                                    .
                                    Designers for children(KIT) had never used
                                    All ESR meters always do myself.
                                    And who are you do this to give me advice?

                                    Comment

                                      #58
                                      Re: ESR meter for a novice

                                      You have repeatedly demonstrated that you have no idea what Low ESR even is.
                                      .
                                      Your ESR meters are for General Purpose caps and you repeatedly recommend such meters for Low ESR measurements.
                                      - That doesn't work.

                                      If you are going to participate on a site that's primary 'theme' is Low ESR applications then you should at least learn what Low ESR it is and refrain from handing out advice until you understand it.
                                      .
                                      Mann-Made Global Warming.
                                      - We should be more concerned about the Intellectual Climate.
                                      -
                                      Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                      - Dr Seuss
                                      -
                                      You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                      -

                                      Comment

                                        #59
                                        Re: ESR meter for a novice

                                        When do at least one ESR meter with his hands,then continue the discussion.

                                        Comment

                                          #60
                                          Re: ESR meter for a novice

                                          I have.
                                          Mann-Made Global Warming.
                                          - We should be more concerned about the Intellectual Climate.
                                          -
                                          Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
                                          - Dr Seuss
                                          -
                                          You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
                                          -

                                          Comment

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