micro switch

micro switch

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  • #32107
    Ian Parkin
    Participant
      @ianparkin39383
      #483287
      Ian Parkin
      Participant
        @ianparkin39383

        Can anyone identify this micro switch ?

        i have lots of these all faulty because the spring has done a runner

        img_8301 (medium).jpg

        #483289
        Brian G
        Participant
          @briang

          Marquardt 1010 series. Out of stock at RS though Marquardt

          Google image search for 1010 microswitch brings up plenty of them

          Brian G

          #483290
          Ian Parkin
          Participant
            @ianparkin39383

            brilliant Brian

            now to find some in stock somewhere

            #483296
            Ian Parkin
            Participant
              @ianparkin39383

              Hmm lots availble but at high prices

              Mouser came up trumps though at a reasonable price for 10 switches

              but only shipping option  is £12 ( ouch)

              Many thanks to Brian

              Edited By Ian Parkin on 01/07/2020 13:14:31

              #483304
              not done it yet
              Participant
                @notdoneityet
                Posted by Brian G on 01/07/2020 12:39:37:

                Marquardt 1010 series. Out of stock at RS though Marquardt

                Google image search for 1010 microswitch brings up plenty of them

                Brian G

                Little wonder they discontinued them. Have you seen the insulation resistance of those things!

                #483317
                Michael Gilligan
                Participant
                  @michaelgilligan61133
                  Posted by not done it yet on 01/07/2020 14:12:39:
                  .
                  Have you seen the insulation resistance of those things!

                  .

                  Insulation resistance (new condition)
                  > 100 MOhm (500 V DC)

                  #483322
                  Jeff Dayman
                  Participant
                    @jeffdayman43397

                    Hi Ian, If possible, I would recommend changing to a modern enclosed microswitch. I have used Omron's D2F series in many projects with great success. About 1 UK pound retail, probably 50 p or less each from an Omron distributor in UK. Many styles of lever and terminals available, several operating forces and volt / amp combinations up to 5A at 250 VAC. These are good units with small size high performance and quality at a good price. No connection to Omron except as a very satisfied user. (if you still use a computer mouse chances are it has two D2F's in it, or a cheap knockoff of one – billions of them in service worldwide)

                    **LINK**

                    #483332
                    not done it yet
                    Participant
                      @notdoneityet
                      Posted by Michael Gilligan on 01/07/2020 15:28:12:

                      Posted by not done it yet on 01/07/2020 14:12:39:
                      .
                      Have you seen the insulation resistance of those things!

                      .

                      Insulation resistance (new condition)
                      > 100 MOhm (500 V DC)

                      Try again, you clearly didn’t read the link. Probably as usual, when it suits you. Here is what it actually says, just for you.

                      “They have a contact resistance of <100 mΩ and an insulation resistance of >100 mΩ. “

                      In my book, that is a mega small resistance.😆

                      #483382
                      Michael Gilligan
                      Participant
                        @michaelgilligan61133
                        Posted by not done it yet on 01/07/2020 17:14:13:

                        Posted by Michael Gilligan on 01/07/2020 15:28:12:

                        Posted by not done it yet on 01/07/2020 14:12:39:
                        .
                        Have you seen the insulation resistance of those things!

                        .

                        Insulation resistance (new condition)
                        > 100 MOhm (500 V DC)

                        Try again, you clearly didn’t read the link. Probably as usual, when it suits you. Here is what it actually says, just for you.

                        “They have a contact resistance of <100 mΩ and an insulation resistance of >100 mΩ. “

                        In my book, that is a mega small resistance.😆

                        .

                        Funny, that ^^^

                        I actually copied and pasted the text directly from the document linked on the RS Components page.

                        Perhaps [prior to apologising for yet another snide remark] you could try reading the definitive document.

                        MichaelG.

                        .

                        https://docs.rs-online.com/5321/0900766b810168f7.pdf

                        Edited By Michael Gilligan on 01/07/2020 20:41:19

                        #483386
                        Ian Parkin
                        Participant
                          @ianparkin39383

                          Jeff

                          they are fitted in this piece of av equipment

                          and theres 7 of them fitted in each one

                          made in Germany in the 70’s and 80’s by kodak

                          its really tricky to retrofit new styles of switch

                          but as i said they all seem to lose the spring

                          they only carrying small currents at 24v

                          #483388
                          Michael Gilligan
                          Participant
                            @michaelgilligan61133

                            Posted by not done it yet on 01/07/2020 17:14:13:

                            .

                            “They have […] an insulation resistance of >100 mΩ. “

                            In my book, that is a mega small resistance.😆

                            .

                            In fact, all that would tell you is that the insulation resistance is greater than a small resistance.

                            … Which would be about as pointless as the crass assessment given ‘in your book‘

                            MichaelG.

                            #483405
                            V8Eng
                            Participant
                              @v8eng

                              You are both correct.

                              The homepage as linked to by Brian G & NDIY for these switches shows: Insulation Resistance. >100 mΩ whereas the actual specification docs linked to by Michael say it is > 100 MOhm.

                              Edited By V8Eng on 01/07/2020 22:19:37

                              #483408
                              Michael Gilligan
                              Participant
                                @michaelgilligan61133
                                Posted by V8Eng on 01/07/2020 22:17:17:

                                You are both correct.

                                The homepage as linked to by Brian G & NDIY for these switches shows: Insulation Resistance. >100 mΩ whereas the actual specification docs linked to by Michael say it is > 100 MOhm.

                                Edited By V8Eng on 01/07/2020 22:19:37

                                .

                                Yes, I know [thanks] … It’s the snide digs that I find objectionable

                                [quote] Try again, you clearly didn’t read the link. Probably as usual, when it suits you. Here is what it actually says, just for you. [/quote]

                                MichaelG.

                                Edited By Michael Gilligan on 01/07/2020 22:28:07

                                #483412
                                peak4
                                Participant
                                  @peak4
                                  Posted by Ian Parkin on 01/07/2020 20:54:51:

                                  Jeff

                                  they are fitted in this piece of av equipment

                                  and theres 7 of them fitted in each one

                                  made in Germany in the 70’s and 80’s by kodak

                                  its really tricky to retrofit new styles of switch

                                  but as i said they all seem to lose the spring

                                  they only carrying small currents at 24v

                                  Maybe use a short length of clock mainspring with a couple of holes either punched or drilled through in a simple jig.

                                  Bill

                                  #483413
                                  V8Eng
                                  Participant
                                    @v8eng

                                    Yes I think we all have enough on our minds at this time without seeing nastiness on here.

                                    Edited By V8Eng on 01/07/2020 22:34:44

                                    #483417
                                    Mark Rand
                                    Participant
                                      @markrand96270

                                      Learned something today! Been doing electronics on and off for 50 years and never realised that people used naked microswitches!

                                      #483488
                                      Circlip
                                      Participant
                                        @circlip

                                        You obviously didn't frequent surplus shops Mark. Have a couple of these as limit switches on a radio control "Servo" I made around 1960. Were scavenged from an "Aerial tuning unit" ex RAF, difference being the insulator is a paxolin stack.

                                        Regards Ian.

                                        Edited By Circlip on 02/07/2020 12:03:47

                                        #483552
                                        Martin Connelly
                                        Participant
                                          @martinconnelly55370

                                          You can buy small long lever microswitches that I think would replace these if the lever was bent to suit.

                                          Martin C

                                          RS part 0150710 for example 

                                          Edited By Martin Connelly on 02/07/2020 17:59:43

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