Anyone build their own equipment? Plans for small benchtop power supply.

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • clearchris
    Badcaps Veteran
    • Dec 2013
    • 687
    • United States

    #1

    Anyone build their own equipment? Plans for small benchtop power supply.

    I knocked this together with a 3d printer, some spare parts and a broken laptop power supply.

    Anyone build anything useful?

    https://www.thingiverse.com/thing:4126979

    Attached Files
  • sam_sam_sam
    Badcaps Legend
    • Jul 2011
    • 6030
    • USA

    #2
    Re: Anyone build their own equipment? Plans for small benchtop power supply.

    I am thinking about doing something similar so I can use my battery tester on BMS balancing protection boards

    But have not figured out or decided how and what parts to use and how do the voltage and current limiting parameters yet

    Comment

    • sam_sam_sam
      Badcaps Legend
      • Jul 2011
      • 6030
      • USA

      #3
      Re: Anyone build their own equipment? Plans for small benchtop power supply.

      Originally posted by clearchris
      I knocked this together with a 3d printer, some spare parts and a broken laptop power supply.

      Anyone build anything useful?

      https://www.thingiverse.com/thing:4126979

      I send you a Pirate Message

      Comment

      • sam_sam_sam
        Badcaps Legend
        • Jul 2011
        • 6030
        • USA

        #4
        Re: Anyone build their own equipment? Plans for small benchtop power supply.

        Originally posted by clearchris
        Anyone build anything useful?
        Yes many years ago I had built an adjustable bench power supply

        It was not fancy but it worked I still have it but I do not use it anymore because I had burnt out the voltage regulator that I had used in it and now you can buy them cheaper than building one

        It will also depends on how you answer the question I sent you to how I am going to put this together

        I have comment you did a very nice job with the case and the write up about it


        My thinking is that I want to use a 48 volt / 24 volts
        ( with a selector switch for the two different voltages ) switching power supply and a buck converter and a shunt less amp voltage meter module

        With a electronic fuse controller setup that I have that I bought several years ago that I have not had a use for it until now
        Last edited by sam_sam_sam; 02-23-2020, 04:54 PM.

        Comment

        • llonen
          Badcaps Veteran
          • Sep 2014
          • 495
          • hampshire

          #5
          Re: Anyone build their own equipment? Plans for small benchtop power supply.

          I used to build some of my own test equipment, mostly small bench PSU(s) the odd esr / capacitor tester, rf sniffers, noise sources and probes but to be honest I predominantly look at his pragmatically these days and reached the conclusion it was not worth my time. Most of my workshop purchases would not lend themselves to home-brewing and since most if not all or my electrical engineering buys are second hand and or intended for refurbishment the overall costs are low compared to new equipment.

          Perhaps if there is some oddity that I need urgently which is not available off the shelf either second hand or new, and or at a sensible pricing structure then I might opt for design and home build. However factoring in my commercial rates it rapidly becomes far cheaper to purchase through the second hand circuit, furthermore equipment purchases are an investment and usually pay for themselves after a couple of repairs.

          Comment

          • clearchris
            Badcaps Veteran
            • Dec 2013
            • 687
            • United States

            #6
            Re: Anyone build their own equipment? Plans for small benchtop power supply.

            I just do it for funsies. If I were a professional, there's no way I'd be building my own equipment.

            Next on my list is probably an isolation transformer.

            Comment

            • momaka
              master hoarder
              • May 2008
              • 12170
              • Bulgaria

              #7
              Re: Anyone build their own equipment? Plans for small benchtop power supply.

              Nice work, clearchris! That 3d-printed case looks pretty neat.

              I've been meaning to build my own bench power supply for years now, but still haven't. The problem is I always find a way to test whatever I am testing without the need for a bench PSU eventually. Either that, or I look through my boxes (note the multiple) of power adapters and always find the adapter and voltage I need... or usually something close enough that I can drop down with a diode or two and get the right voltage I need. Sure a bench PSU would have come handy on many occasions. But in the end, I've always been the type to try and troubleshoot with the least amount of tools possible, and so far that hasn't really stopped me much for fixing a good deal of stuff.

              Comment

              • sam_sam_sam
                Badcaps Legend
                • Jul 2011
                • 6030
                • USA

                #8
                Re: Anyone build their own equipment? Plans for small benchtop power supply.

                Originally posted by clearchris
                Next on my list is probably an isolation transformer.
                When you do this project please post it

                Comment

                • eccerr0r
                  Solder Sloth
                  • Nov 2012
                  • 8685
                  • USA

                  #9
                  Re: Anyone build their own equipment? Plans for small benchtop power supply.

                  I'd think an isolation transformer wouldn't be very much more than just getting an isolation transformer...

                  Unless...

                  Comment

                  • clearchris
                    Badcaps Veteran
                    • Dec 2013
                    • 687
                    • United States

                    #10
                    Re: Anyone build their own equipment? Plans for small benchtop power supply.

                    sam: it's not hard, you can either get two identical transformers and hook them up, or you can have one transformer, take out one of the coils and rewind it so that it's a 1 to 1 transformer. I have one microwave transformer, I'm on the hunt for another. I'd rather not do the wrapping. Yes, in my box there would be the presence of very high voltage, but I also use microwave ovens and neon signs, both of which have similar voltages. I plan on putting it in a wooden box with no fasteners penetrating all the way through the wood. If I'm feeling really paranoid, I have some glass tubes I can use to isolate the high voltage connections.
                    There are plans out there for such things.

                    Comment

                    • clearchris
                      Badcaps Veteran
                      • Dec 2013
                      • 687
                      • United States

                      #11
                      Re: Anyone build their own equipment? Plans for small benchtop power supply.

                      Oh, I forgot about this, I did print a case for my lcr-4. It's not my design, and it's pretty rough because it was printed before I really had my printer dialed in, but it's functional enough, if not aesthetic.

                      Attached Files

                      Comment

                      • momaka
                        master hoarder
                        • May 2008
                        • 12170
                        • Bulgaria

                        #12
                        Re: Anyone build their own equipment? Plans for small benchtop power supply.

                        Originally posted by clearchris
                        Oh, I forgot about this, I did print a case for my lcr-4. It's not my design, and it's pretty rough because it was printed before I really had my printer dialed in, but it's functional enough, if not aesthetic.

                        I like it!

                        As for making the case smooth - I've seen people make their own "hot acetone baths" particularly for making 3D-printed ABS plastic projects shiny / with a mirror finish.)

                        Me - I'm more about function over looks, so I haven't even been bothered to make a case for my T4 meter.

                        Comment

                        • clearchris
                          Badcaps Veteran
                          • Dec 2013
                          • 687
                          • United States

                          #13
                          Re: Anyone build their own equipment? Plans for small benchtop power supply.

                          Yeah, sometimes I smooth my ABS prints, but not often. Here are some things I have cranked out (designed and printed) in the past few days since I have been trapped. IMHO, the designs are pretty slick and the printouts are damn nice too. They are both ABS, neither have been acetone smoothed.

                          Raspberry Pi Zero W Case and Mount
                          https://www.thingiverse.com/thing:4249306

                          4 Module Relay Case / Mount
                          https://www.thingiverse.com/thing:4245641

                          Comment

                          • clearchris
                            Badcaps Veteran
                            • Dec 2013
                            • 687
                            • United States

                            #14
                            Re: Anyone build their own equipment? Plans for small benchtop power supply.

                            New design. CCM5D PWM motor controller. First thing I'm going to hook it to is a computer fan for a fume extractor. No more getting buzzed off kingbo fumes for me!

                            Pretty simple design, also helped that I used a lot of the design from the power supply.

                            Attached Files

                            Comment

                            Related Topics

                            Collapse

                            • Document Archive
                              HP 280 G2 Small Form Factor PC i3-6100 Specification for Upgrade or Repair
                              by Document Archive
                              This specification for the HP 280 G2 Small Form Factor PC can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the 280 G2 Small Form Factor PC boardview and 280 G2 Small Form Factor PC schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification,...
                              09-12-2024, 03:44 PM
                            • Document Archive
                              HP ProDesk ProDesk 600 G2 Small Form Factor PC ProDesk 600 i5-6500 Specification for Upgrade or Repair
                              by Document Archive
                              This specification for the HP ProDesk ProDesk 600 G2 Small Form Factor PC can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the ProDesk ProDesk 600 G2 Small Form Factor PC boardview and ProDesk ProDesk 600 G2 Small Form Factor PC schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please...
                              09-12-2024, 03:36 PM
                            • Document Archive
                              HP ProDesk ProDesk 600 G2 Small Form Factor PC ProDesk 600 i5-6500 Specification for Upgrade or Repair
                              by Document Archive
                              This specification for the HP ProDesk ProDesk 600 G2 Small Form Factor PC can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the ProDesk ProDesk 600 G2 Small Form Factor PC boardview and ProDesk ProDesk 600 G2 Small Form Factor PC schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please...
                              09-12-2024, 03:36 PM
                            • Document Archive
                              HP ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) ProDesk 400 i3-4130 Specification for Upgrade or Repair
                              by Document Archive
                              This specification for the HP ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) boardview and ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly...
                              09-12-2024, 03:28 PM
                            • Document Archive
                              HP ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) ProDesk 400 i5-4570 Specification for Upgrade or Repair
                              by Document Archive
                              This specification for the HP ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) can be useful for upgrading or repairing a desktop PC that is not working. As a community we are working through our specifications to add valuable data like the ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) boardview and ProDesk ProDesk 400 G1 Small Form Factor PC (ENERGY STAR) schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly...
                              09-12-2024, 03:28 PM
                            • Loading...
                            • No more items.
                            Working...