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  1. Home
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  3. Safe In-Wall AC to DC Transformers??

Safe In-Wall AC to DC Transformers??

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  • petewillP petewill

    @ThinkPad Thanks for posting. It's good to see how the tests are performed. Unfortunately I don't have the equipment or skill to know how to test. Hopefully we will be able to find a safe one that we can all use.

    @Moshe-Livne have you been able to find the meanwell chargers from anywhere besides jameco?

    YveauxY Offline
    YveauxY Offline
    Yveaux
    Mod
    wrote on last edited by
    #64

    @petewill Mouser carries them, and also the european version (GS05E-USB). Please see here.

    http://yveaux.blogspot.nl

    petewillP 1 Reply Last reply
    1
    • T ThinkPad

      I would be careful when stripping cheap USB-powersupplies and tucking them into a box in the wall. Read this page: http://www.lygte-info.dk/info/indexUSB UK.html and this page: http://www.lygte-info.dk/info/usbPowerSupplyTest UK.html to see how badly constructed some of these powersupplies are.

      He also explains how he is testing those powersupplies: http://lygte-info.dk/info/usbPowerSupplyTestHow UK.html
      Very informative i must say.

      SparkmanS Offline
      SparkmanS Offline
      Sparkman
      Hero Member
      wrote on last edited by
      #65

      @ThinkPad Thanks for posting that. Great info there. Looks like you get what you pay for with the cheap power supplies.

      Cheers
      Al

      1 Reply Last reply
      0
      • T ThinkPad

        I would be careful when stripping cheap USB-powersupplies and tucking them into a box in the wall. Read this page: http://www.lygte-info.dk/info/indexUSB UK.html and this page: http://www.lygte-info.dk/info/usbPowerSupplyTest UK.html to see how badly constructed some of these powersupplies are.

        He also explains how he is testing those powersupplies: http://lygte-info.dk/info/usbPowerSupplyTestHow UK.html
        Very informative i must say.

        DidiD Offline
        DidiD Offline
        Didi
        wrote on last edited by
        #66

        @ThinkPad said:

        I would be careful when stripping cheap USB-powersupplies and tucking them into a box in the wall.

        Thanks for the information.The most powersupplies are horrible.
        The engineers have developed them must go to jail.
        Safety must be the major goal not the price.

        if (knowledge == 0) { use BRAIN; use GOOGLE;use SEARCH; } else {make POST;}

        1 Reply Last reply
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        • YveauxY Yveaux

          @petewill Mouser carries them, and also the european version (GS05E-USB). Please see here.

          petewillP Offline
          petewillP Offline
          petewill
          Admin
          wrote on last edited by
          #67

          @Yveaux Thanks. I was hoping there would be a cheaper way to get these. With shipping it's pretty pricey. Probably not as pricey as a fire though...

          My "How To" home automation video channel: https://www.youtube.com/channel/UCq_Evyh5PQALx4m4CQuxqkA

          Moshe LivneM 1 Reply Last reply
          0
          • petewillP petewill

            @Yveaux Thanks. I was hoping there would be a cheaper way to get these. With shipping it's pretty pricey. Probably not as pricey as a fire though...

            Moshe LivneM Offline
            Moshe LivneM Offline
            Moshe Livne
            Hero Member
            wrote on last edited by
            #68

            @petewill I have a supplier on ali that sells meanwell reasonably cheap. I used to buy all the power supplies for the LED lights I made from him. I will ask him for a quote. The downside is that he ships everything DHL.... still might be cheaper. where are you located?

            petewillP 1 Reply Last reply
            0
            • Moshe LivneM Moshe Livne

              @petewill I have a supplier on ali that sells meanwell reasonably cheap. I used to buy all the power supplies for the LED lights I made from him. I will ask him for a quote. The downside is that he ships everything DHL.... still might be cheaper. where are you located?

              petewillP Offline
              petewillP Offline
              petewill
              Admin
              wrote on last edited by
              #69

              @Moshe-Livne Ok, thanks! I live in Colorado, USA.

              My "How To" home automation video channel: https://www.youtube.com/channel/UCq_Evyh5PQALx4m4CQuxqkA

              Moshe LivneM 1 Reply Last reply
              0
              • J Offline
                J Offline
                jemish
                wrote on last edited by
                #70

                so finally....plz...tell me which power supply is the best to put inside in the wall?

                I want required 5v for Relay, arduino mini, and radio.

                YveauxY 1 Reply Last reply
                0
                • petewillP petewill

                  @Moshe-Livne Ok, thanks! I live in Colorado, USA.

                  Moshe LivneM Offline
                  Moshe LivneM Offline
                  Moshe Livne
                  Hero Member
                  wrote on last edited by
                  #71

                  @petewill My supplier is not selling these :-(
                  apparently they are new
                  @jemish It is still a work in progress. @didi will do some tests and we are trying to get some more for testing.
                  Based on http://www.lygte-info.dk/info/indexUSB UK.html I would choose the apple one (http://lygte-info.dk/review/USBpower Apple USB power adapter UK.html)... But YMMV. I am not sure it has OTP

                  1 Reply Last reply
                  0
                  • J jemish

                    so finally....plz...tell me which power supply is the best to put inside in the wall?

                    I want required 5v for Relay, arduino mini, and radio.

                    YveauxY Offline
                    YveauxY Offline
                    Yveaux
                    Mod
                    wrote on last edited by
                    #72

                    @jemish Be safe and buy something like: http://www.recom-international.com/pdf/Powerline-AC-DC/RAC03-SCR_277.pdf
                    Live on the edge (having a decent fire insurance) and tear down a USB charger or buy one of the few $$ versions from China .

                    http://yveaux.blogspot.nl

                    J 1 Reply Last reply
                    0
                    • petewillP petewill

                      @ThinkPad Thanks for posting. It's good to see how the tests are performed. Unfortunately I don't have the equipment or skill to know how to test. Hopefully we will be able to find a safe one that we can all use.

                      @Moshe-Livne have you been able to find the meanwell chargers from anywhere besides jameco?

                      Moshe LivneM Offline
                      Moshe LivneM Offline
                      Moshe Livne
                      Hero Member
                      wrote on last edited by
                      #73

                      I have asked the guy who made this excellent list to test the meanwell - hopefully he will oblige. I still haven't been able to find anything with OTP even remotely in this price bracket....

                      @petewill said:

                      @ThinkPad Thanks for posting. It's good to see how the tests are performed. Unfortunately I don't have the equipment or skill to know how to test. Hopefully we will be able to find a safe one that we can all use.

                      @Moshe-Livne have you been able to find the meanwell chargers from anywhere besides jameco?

                      1 Reply Last reply
                      0
                      • YveauxY Yveaux

                        @jemish Be safe and buy something like: http://www.recom-international.com/pdf/Powerline-AC-DC/RAC03-SCR_277.pdf
                        Live on the edge (having a decent fire insurance) and tear down a USB charger or buy one of the few $$ versions from China .

                        J Offline
                        J Offline
                        jemish
                        wrote on last edited by
                        #74

                        @Yveaux this RECOM AC to DC converter will safe or not for put it to in the wall.

                        because I have to start live HOME Automation.

                        YveauxY 1 Reply Last reply
                        0
                        • J jemish

                          @Yveaux this RECOM AC to DC converter will safe or not for put it to in the wall.

                          because I have to start live HOME Automation.

                          YveauxY Offline
                          YveauxY Offline
                          Yveaux
                          Mod
                          wrote on last edited by
                          #75

                          @jemish Its dimensions are especially chosen to fit in a standard round wall enclosure; its round and very flat, so it can be mounted behind a switch or some electronics inside a wall.
                          here you can find some use cases.

                          http://yveaux.blogspot.nl

                          J 1 Reply Last reply
                          0
                          • YveauxY Yveaux

                            @jemish Its dimensions are especially chosen to fit in a standard round wall enclosure; its round and very flat, so it can be mounted behind a switch or some electronics inside a wall.
                            here you can find some use cases.

                            J Offline
                            J Offline
                            jemish
                            wrote on last edited by
                            #76

                            @Yveaux thank you for your reply....
                            You mean that I can put this RECOM inside the wall box...behind the switch board.

                            YveauxY 1 Reply Last reply
                            0
                            • J jemish

                              @Yveaux thank you for your reply....
                              You mean that I can put this RECOM inside the wall box...behind the switch board.

                              YveauxY Offline
                              YveauxY Offline
                              Yveaux
                              Mod
                              wrote on last edited by
                              #77

                              @jemish yes

                              http://yveaux.blogspot.nl

                              J 1 Reply Last reply
                              0
                              • YveauxY Yveaux

                                @jemish yes

                                J Offline
                                J Offline
                                jemish
                                wrote on last edited by
                                #78

                                @Yveaux where may I can buy it?

                                YveauxY 1 Reply Last reply
                                0
                                • J jemish

                                  @Yveaux where may I can buy it?

                                  YveauxY Offline
                                  YveauxY Offline
                                  Yveaux
                                  Mod
                                  wrote on last edited by
                                  #79

                                  @jemish Depends on where you live. I bought mine from Conrad, and I know Farnell and Mouser also sell it.
                                  Just google for some local suppliers.

                                  http://yveaux.blogspot.nl

                                  1 Reply Last reply
                                  0
                                  • petewillP petewill

                                    Does anyone know of any 120V AC to 5V DC transformers that are safe to put in a wall electrical box? I have been using old cell phone chargers for most of my projects but I was recently pondering putting something right in the wall. Since shipping can take so long I thought I'd ask now before I even start on the project.

                                    I did some searching and couldn't find anything so I thought I'd ask the experts here.

                                    Thanks in advance!

                                    EDIT 9/7/2016
                                    Watch out for Fakes! Read more here: https://forum.mysensors.org/topic/1607/safe-in-wall-ac-to-dc-transformers/355
                                    If in doubt you can get them directly from the vendor here: http://www.hlktech.net/product.php?CateId=10

                                    EDIT 12/28/2015
                                    After MUCH discussion on this here are the findings of this thread (as of now):

                                    Here is the diagram for how things should be wired:
                                    HLK-PM01-Wiring.jpg

                                    These are the parts I ordered. I haven't tested any of these parts yet as this project has been put on the back burner for now :(. I am in the USA so this is spec'd for 120 VAC. If you're using 240 you will need to change the size of the Varistor but everything else should be fine for 240.

                                    Also, see these posts for more discussion/ideas if interested:
                                    http://forum.mysensors.org/topic/1540/110v-230v-ac-to-mysensors-pcb-board
                                    http://forum.mysensors.org/topic/2488/in-wall-pcb

                                    Varistor for 120VAC - http://www.ebay.com/itm/321024816822?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

                                    73°C Thermal Fuse - http://www.ebay.com/itm/221560426284?_trksid=p2057872.m2749.l2649&var=520415979885&ssPageName=STRK%3AMEBIDX%3AIT

                                    250V 300mA Slow Blow Fuse - http://www.ebay.com/itm/111433875797?_trksid=p2057872.m2749.l2649&var=410420838583&ssPageName=STRK%3AMEBIDX%3AIT

                                    HLK-PM01 - http://www.ebay.com/itm/351418782712?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

                                    Pete

                                    Moshe LivneM Offline
                                    Moshe LivneM Offline
                                    Moshe Livne
                                    Hero Member
                                    wrote on last edited by
                                    #80

                                    @petewill @didi found a cheaper source:
                                    http://www.tme.eu/en/details/gs05e-usb/mains-power-supplies/mean-well/
                                    shipping to the US 9.90. still ridiculously expensive but not as bad as mouser

                                    petewillP 1 Reply Last reply
                                    0
                                    • scalzS Offline
                                      scalzS Offline
                                      scalz
                                      Hardware Contributor
                                      wrote on last edited by
                                      #81

                                      @Moshe Livne: interesting. I didn't know that tme has it. They have nice enclosure too, like those for wall ac adapter http://www.tme.eu/en/katalog/enclosures_100431/#id_category=100628&s_field=artykul&s_order=ASC&page=1
                                      I live in EU. And for shipping I think they are good, regarding Rs, farnell, and mouser too. But not the same catalog unfortunately.

                                      Moshe LivneM 1 Reply Last reply
                                      0
                                      • scalzS scalz

                                        @Moshe Livne: interesting. I didn't know that tme has it. They have nice enclosure too, like those for wall ac adapter http://www.tme.eu/en/katalog/enclosures_100431/#id_category=100628&s_field=artykul&s_order=ASC&page=1
                                        I live in EU. And for shipping I think they are good, regarding Rs, farnell, and mouser too. But not the same catalog unfortunately.

                                        Moshe LivneM Offline
                                        Moshe LivneM Offline
                                        Moshe Livne
                                        Hero Member
                                        wrote on last edited by
                                        #82

                                        @scalz these are new i think and beibg propagated to shops. Every time I search i get more....

                                        1 Reply Last reply
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                                        • DidiD Offline
                                          DidiD Offline
                                          Didi
                                          wrote on last edited by
                                          #83

                                          Powersupplies arrived :smiley:

                                          DSC_0079.jpg

                                          if (knowledge == 0) { use BRAIN; use GOOGLE;use SEARCH; } else {make POST;}

                                          Moshe LivneM 2 Replies Last reply
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