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Power supply build quality pictorial. part 2

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    Re: Power supply build quality pictorial. part 2

    Infinity ATX P4-400W

    Cheng 470uF 200V primary units.
    Non-approved Y-class units .
    13007 primary switchers.
    FSDM311 +5VSB switcher.
    HS8108B control IC.
    1000uF 10V Bor Hurng before and after +5VSB inductor.
    1000uF 10V Bor Hurng on +3.3 and +5V rails.
    1000uF 16V Bor Hurng on +12V rail.
    220uF 16V Bor Hurng on -12V rail.
    S10C45C rectifier on +3.3V rail (16A).
    S16C45C rectifier on +5V rail (24A).
    S12C20C rectifier on +12V rail (16A).
    KBP307C input rectifier.
    Attached Files
    My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

    Comment


      Re: Power supply build quality pictorial. part 2

      Two ATX psus.

      Compaq 250W (Lite-On) Veeeery heavy
      680uf 200V ????
      Secondary has Rubycons...
      Can't see much really


      Ever-Power 235W (Channel Well)
      2x 330uf 200V Teapo
      2x 1000uf 10V Capxon
      2x 1650 16V Fuhjyyu
      Oh well...

      4 Amp rect. bridge
      2x 13007
      2x P40NE mosfets
      1x D83-004 Schottky

      Both working good. They were just dusty.
      Attached Files

      Comment


        Re: Power supply build quality pictorial. part 2

        The EverPower is a ChannelWell AT power supply with add on 5vsb board to make it a ATX power supply. They also did this for Antec. Here are some pictures of an Antec ATX power supply made by ChannelWell with the 5vsb retrofit board.
        Attached Files
        Old proverb say.........If you shoot at nothing, you will hit nothing (George Henry 10-14-11)

        Comment


          Re: Power supply build quality pictorial. part 2

          When I opened up the EverPower I remembered other psus having similar add on 5vsb circuits. It seems the KA393 gets power from a small board that says ps-on.

          I haven't looked too much into the 250W Compaq. This one looks way more intersting with it's quaint buildup.
          Attached Files

          Comment


            Re: Power supply build quality pictorial. part 2

            This is a power supply I have nice memories of - well not really this psu but the computer it came from, a HP Vectra with a 486/66 Mhz that was gifted to me so that I could have a computer in the first year of university.

            As you can see from the pictures, it's a Delta, pretty much plain AT... 5v@13.5A, 12v@4.5A with a max output of 100w
            Minibea fan 12v@0.3A , can't tell the actual mosfets/diodes because I'd have to desolder the inpu wires or remove the heatsinks but the capacitors are all quality :

            Rubycon 270uF 400v on the primary,
            1 United Chemi Con or Nippon Chemi Con (it's that particular logo on them) sxe 2200uF 16v and 2 2200uF 10v

            Rubycon YXB 1000uF 10v on secondary,
            some SXE 2200uF 10v
            a few small KME 10uF 50v, a 220uF 3.5v
            a lonely taicon 1000uf 16v on the 12v line and a few small ones around the center of the pcb, 0.47uf, 47uF

            It still worked fine about 3-4 years ago but it should still work great now.. For something made in '96 it still looks good, nothing bulging or leaking...

            I'd like to know the topology but I assume it's a half bridge or something before that...
            Attached Files
            Last edited by mariushm; 08-27-2011, 10:22 AM.

            Comment


              Re: Power supply build quality pictorial. part 2

              Recently had to open up my Samsung ML-1710P printer so I thought about doing some power supply snapshots.

              center IC is str g6353 ... the one on the left I can't reach

              big cap is Lelon 400v 100uF LS series
              black cap on the right si a Samwha 1000uF 16v (s3c) , green one is a Lelon 1000uF 35v RGA series, blue one is a Lelon but too lazy to bend it and read the value

              Don't see the need to recap it as it works fine... well as fine as a drum with 10k pages lifetime works after 15k pages printed on it (there's some toner graying out a few millimeters on the right side of the pages, like you would see on some fax machines)
              Attached Files

              Comment


                Re: Power supply build quality pictorial. part 2

                Originally posted by mariushm View Post
                I'd like to know the topology but I assume it's a half bridge or something before that...
                Hard to say exactly... there's a small transformer that could be the driver if this is a half-bridge design. But there's also only one mains cap, so this could also be a MOSFET-based single-transistor forward design (with IC1 being the PWM controller and IC2 and IC3 providing feedback to primary). Most likely it's a single-transistor forward. How many transistors are there on the primary side, and what are the various IC?

                Comment


                  Re: Power supply build quality pictorial. part 2

                  SLB ATX-300W

                  All electrolytics are ChengX.
                  Half of the bridge rectifier are 2A units, with the other two 3A units.
                  470uF 200V primary units.
                  1000uF 10V before +5VSB inductor and 470uF 10V after it.
                  2200uF 10V before and after +3.3V inductor.
                  2200uF 10V before and after +5V inductor.
                  2200uF 25V before +12V inductor and 470uF 16V after it.
                  470uF 10V on -5V rail.
                  470uF 16V on -12V rail.
                  2SK2141 primary side MOSFET (this is not an old-school style power supply!)
                  2SC5027 primary side transistor for +5VSB.
                  SBR2040CT rectifier for +3.3V.
                  SBL3040PT rectifier for +5V.
                  MUR10100CT rectifier for +12V .
                  TD3843 (=UC3843) controller with LP7510 voltage supervisor.
                  Attached Files
                  My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

                  Comment


                    Re: Power supply build quality pictorial. part 2

                    Leadman/Powmax!

                    I like how they used a huge axial diode in a place silkscreened for a tab-mount (but the heatsink was cut too short to reach it)

                    Comment


                      Re: Power supply build quality pictorial. part 2

                      Originally posted by japlytic View Post
                      2SK2141 primary side MOSFET (this is not an old-school style power supply!)
                      You know i was preparing to ask where the TL494 is... But i guess i know why they did it like that - look at that tiny transformer! Also, a currentmode controller makes the thing harder to blow up. That means, motherboard goes out first.
                      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


                        Re: Power supply build quality pictorial. part 2

                        Omni PS-ATX 500W

                        680uF 200V CapXon LP primary units.
                        3300uF 10V Xunda (bulging) before +3.3V inductor with 1000uF 10V XJ after it.
                        3300uF 16V Nova on +12V rail.
                        2200uF 10V XJ before +5V inductor with 3300uF 10V Xunda (bulging) after it.
                        470uF 16V XJ before and after +5VSB inductor.
                        470uF 16V XJ on -5V and -12V rails.
                        MJ13009 primary switchers.
                        6A 800V bridge rectifier.
                        SBL3040PT rectifier each for +3.3V and +5V rails.
                        U20D20C rectifier for +12V.
                        Attached Files
                        My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

                        Comment


                          Re: Power supply build quality pictorial. part 2

                          Another Omni PS-ATX 500W (they are obviously not that consistent with their designs).

                          680uF 200V Nippon Chemi-Con KMG primary caps

                          2x 1000uF 10V SD caps on 5v Rail (one before and one after Jumper wire), ST3045CW Schottky.

                          2x 1000uF 16V <BH> on +12V rail (one before and one after Jumper wire), STTH2002CT rectifier

                          The 3.3v rail is uses the same parts as the 5v rail (only, it has a PI filter coil)

                          ST W13009 primary switchers.
                          6A bridge rectifier.

                          I have another identical PSU, which I re-capped, added a fan, and replaced the ceased up fan with a CM blue LED fan, this one, on the other hand, I'm just gonna explode.
                          Attached Files
                          I love putting bad caps and flat batteries in fire and watching them explode!!

                          No wonder it doesn't work! You installed the jumper wires backwards

                          Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

                          Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

                          Comment


                            Re: Power supply build quality pictorial. part 2

                            Pixxo Jaguar PW series 600W (K-Mex)


                            Bridge Rectifier - KBL06 600v-4A
                            Primary Caps - 2x HEC 560uf-200v
                            Primary Switchers - 2x MD 13009K 400v-12A
                            Primary Side Mosfet - CET CEF-02N65D 600v-1.5A
                            Schottky Rectifier - MOSPEC S30D40CS 40v-30A
                            Schottky Rectifier - MOSPEC S20C40C 40v-20A
                            Switch Mode Rectifier - MOSPEC F16C20C 20v-16A
                            Supervisor+Regulator+PWM - System General SG6105ADZ
                            Output caps for +3.3v- 2x YC 2200uf-10v
                            Output caps for +5v - 2x YC 2200uf-10v
                            Output cap for +12v - Chengx 2200uf-16v
                            Output cap for -12V - KHC 470uf-16V

                            There's no way it can do 600W, maybe 400W Max ??, what do you think guys?
                            Attached Files

                            Comment


                              Re: Power supply build quality pictorial. part 2

                              That looks like a 200W power supply to me.

                              Comment


                                Re: Power supply build quality pictorial. part 2

                                300-350W max

                                edit: With that transformer I don't think it can make more than 300W...

                                Comment


                                  Re: Power supply build quality pictorial. part 2

                                  Originally posted by SIDMX View Post
                                  There's no way it can do 600W, maybe 400W Max ??
                                  More like 300W continuous. 350W on a good day. It will do 400W only when it explodes and shorts momentarily before the fuse blows.

                                  I bet you the over-power protection on the SG6105 is set to that as well (about 300W or so).

                                  Originally posted by SIDMX View Post
                                  What do you think guys?
                                  Let's see, here...
                                  60A on the 5v rail with only 1x 30A rectifier? - I don't think so. Maybe peak for 0.1 ns. The 3.3v and 12v rails claiming 36A with 20A and 16A rectifiers respectively is also a complete lie.
                                  What else? - the spacing of the traces on the PCB on the primary side is wrong - it should be much more than that. The transformers are undersized and UL logo is forged (no number).
                                  Last edited by momaka; 10-05-2011, 09:18 PM.

                                  Comment


                                    Re: Power supply build quality pictorial. part 2

                                    It looks very similar to the Rexpower PL400 which I re-built, so the OEM would be KeyMouse. On the PL400, the OPP was set at only 200W. Whether this would be the same or not, I don't know. the only way to find out for sure is put it on a load tester (or send it to me )

                                    EDIT. I do also have a K-Mex branded PW450 unit. It will do up to 350W, but this one isn't quite as beefy.
                                    Last edited by c_hegge; 10-05-2011, 09:51 PM.
                                    I love putting bad caps and flat batteries in fire and watching them explode!!

                                    No wonder it doesn't work! You installed the jumper wires backwards

                                    Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium

                                    Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 Pro

                                    Comment


                                      Re: Power supply build quality pictorial. part 2

                                      They didn't even bother to change the ratings for the rails with different wattages!

                                      The limiting component here is the primary rectifier, 4A at 120V gives 480W in but with 75% efficiency (typical) that's 360W out. The secondary is good for 400W so the first thing to go will probably be the primary rectifier.

                                      EI-40 transformer is sufficient for a 350W unit, and is even found in some real 400W.

                                      Comment


                                        Re: Power supply build quality pictorial. part 2

                                        Originally posted by b700029 View Post
                                        The limiting component here is the primary rectifier, 4A at 120V gives 480W in but with 75% efficiency (typical) that's 360W out. The secondary is good for 400W so the first thing to go will probably be the primary rectifier.
                                        I've heard that a million times. And no, the primary diodes almost never blow even though in theory they are way undersized for the task. None of the power supplies with the "4-diode treatment" tested by Hardware Secrets ever blew the primary rectifiers. It's the primary switchers which almost always give up due to overheating, and the 12v rectifiers sometimes.
                                        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


                                          Re: Power supply build quality pictorial. part 2

                                          Delta DPS300MB 300W

                                          5vsb = 4.2V

                                          1 bad Capxon GL 1500uF 16V and 1 Ltec 220uF 25V that had high esr

                                          Attached photos with the Capxon removed:
                                          Attached Files

                                          Comment

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