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    Re: the gutless, bloated, and fried power supply hall of shame

    Originally posted by mariushm View Post
    later edit 2 : TELVM if you contribute to that site, why the hell does it not allow google translate to translate the forum?
    It translated it for me just fine ...

    Looks like the typical cheap-ish PSU. Those thin heatsinks with holes on the top seem fairly common. And, typical 3A diode bridge rectifier... not bad for low wattage but for higher wattage you want to go with a better bridge rectifier.
    Muh-soggy-knee

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      Re: the gutless, bloated, and fried power supply hall of shame

      I love the 'prize' that is 'awarded' to gutless wonders in that site:


      "This product is the bomb!"

      Comment


        Re: the gutless, bloated, and fried power supply hall of shame

        Considering the "special effects" that occur when one powers up a computer with one of these things, it is very adequate.

        Comment


          Re: the gutless, bloated, and fried power supply hall of shame

          The funny part is that if you type "Produto Bomba" into google translate, you get "Product Pump"
          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: the gutless, bloated, and fried power supply hall of shame

            ^ Yeah in portuguese and spanish the same word bomba is used both for bomb and pump.

            This leads to the funny situation where firemen are called bomberos ('bombers' ).

            Comment


              Re: the gutless, bloated, and fried power supply hall of shame

              A fearsome squad of bomberas :

              Comment


                Re: the gutless, bloated, and fried power supply hall of shame

                Originally posted by TELVM View Post
                "This product is the bomb!"
                ... only if it's assembled by a group of terrorists.

                Originally posted by TELVM View Post
                This leads to the funny situation where firemen are called bomberos ('bombers' ).

                Comment


                  Re: the gutless, bloated, and fried power supply hall of shame

                  Also causes some problems in airport security, when people donĀ“t know the correct name for something ( like asthma pumps ) and call it "bombs" ...

                  Comment


                    Re: the gutless, bloated, and fried power supply hall of shame

                    Another even worse 'TOOQ' gutless wonder :




                    Behold its mighty rectifier bridge :



                    (Should I 'upgrade' to a four-diode treatment?)

                    Somebody messed up and put 13009s instead of the traditional 13007s:


                    Armoured extra thick heatsinks:


                    Exquisite output filtering courtesy of state-of-the-art, stealth technology PI coils:


                    And not a single SATA connector !

                    .
                    Attached Files

                    Comment


                      Re: the gutless, bloated, and fried power supply hall of shame

                      270w max

                      Comment


                        Worldwide EA-300

                        Seen a Worldwide PSU before, but it was a rebranded CWT ISO series PSU. This ones UL number leads to "MITACHI TAIWAN CO LTD" and the fan pretty much confirms this. For the 300W label it looks alright.

                        First time I've ever seen Su'scon on the voltage doubler of a PSU, 560uF isn't bad. 4A bridge, switchers are your standard 12A 13009 transistors, and 2 transistor 5VSB. The input filter is decent minus the fact that those aren't safety approved Y caps and the spots for the MOV's were not filled.

                        35 transformer, decent sized 5VSB transformer.

                        Here's what I don't understand about this PSU. Where is the toroid for the 3.3V regulation, and the 3.3V output?! Also, instead of your average 16-20A ultra fast, there's a 40A MOSFET on the 3.3V rail. Why would they use this method? 16A ultra fast for 12V and 30A schottky for 5V. Both the 12V and 5V have room for another rectifier in parallel. All of the caps minus the bulk caps are JEE, and surprisingly only one of them on the 5VSB is bulging. Although I wouldn't be surprised if some of the other ones had high ESR. According to the PWM chip, this thing was manufactured sometime in late 2006.

                        Also really glad that this things fan doesn't run at 100% all the time!
                        Attached Files

                        Comment


                          Re: the gutless, bloated, and fried power supply hall of shame

                          The 3.3V rail uses linear DC-DC conversion from the 5V rail, which doesn't require a toroid coil. It's used because it's cheaper than using a separate rectification circuit for it.
                          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: the gutless, bloated, and fried power supply hall of shame

                            Originally posted by c_hegge View Post
                            The 3.3V rail uses linear DC-DC conversion from the 5V rail, which doesn't require a toroid coil. It's used because it's cheaper than using a separate rectification circuit for it.
                            Cool, thanks! Does it yield any benefits such has higher efficiency, or does it just reduce the ripple on the 3.3V rail?

                            Comment


                              Re: the gutless, bloated, and fried power supply hall of shame

                              It's just cheap. Linear regulation is the cleanest and simplest, but also the most inefficient form of regulation, as the difference between input voltage and output voltage is dropped across the regulator element and wasted as heat. Basically the regulating element behaves like an automated variable resistor.
                              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: the gutless, bloated, and fried power supply hall of shame

                                It's 34 watts at 20 A? OMG, what is efficiency of this thing, 40 %?
                                Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                                Exclusive caps, meters and more!
                                Hardware Insights - power supply reviews and more!

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                                  Re: the gutless, bloated, and fried power supply hall of shame

                                  Originally posted by Th3_uN1Qu3 View Post
                                  It's just cheap. Linear regulation is the cleanest and simplest, but also the most inefficient form of regulation, as the difference between input voltage and output voltage is dropped across the regulator element and wasted as heat. Basically the regulating element behaves like an automated variable resistor.
                                  Interesting. Does this create more heat on the only toroid since it's generated from the 5V? So it probably doesn't even need a PI coil for that rail to stay low on ripple. Luckily the 3.3V rail isn't stressed much at all in modern systems. I have this thing powering a Pentium D (90nm powerhog) with DDR RAM and a GT220, surprisingly even with that Pentium D at full load the 12V rail is staying steady at 11.97V. The fan did kick up quite a bit, but still pretty quiet.
                                  Originally posted by Behemot View Post
                                  It's 34 watts at 20 A? OMG, what is efficiency of this thing, 40 %?
                                  Are you talking about the 3.3V rectifier?

                                  Comment


                                    Re: the gutless, bloated, and fried power supply hall of shame

                                    Whole supply, in worst case scenario it burns 34 watts just at +3,3 V, don't rather think how much it burns on other rails
                                    Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                                    Exclusive caps, meters and more!
                                    Hardware Insights - power supply reviews and more!

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                                      Re: the gutless, bloated, and fried power supply hall of shame

                                      Originally posted by Behemot View Post
                                      Whole supply, in worst case scenario it burns 34 watts just at +3,3 V, don't rather think how much it burns on other rails
                                      Haha When it was running that Pentium D system it was pulling about 150W and the secondary heatsink + toroid were 35C, 36C respectively. Doesn't seem too bad. This thing did not take a 30A schottky rectifier on the 12V, even one with 100V reverse voltage. Can I put a 12A ultra fast in parallel with the original 16A ultra fast? They're both MOSPEC with the same exact specs except the peak amperage. If not, I think two 12A ultra fasts in parallel would be better than a single 16A especially for efficiency, and combined probably good for ~19A

                                      Comment


                                        Re: the gutless, bloated, and fried power supply hall of shame

                                        Originally posted by Th3_uN1Qu3 View Post
                                        It's just cheap. Linear regulation is the cleanest and simplest, but also the most inefficient form of regulation, as the difference between input voltage and output voltage is dropped across the regulator element and wasted as heat.
                                        Indeed.
                                        But if you don't have much of a load on the 3.3V rail (which most systems nowadays don't), then this is nothing to worry about. In fact, I prefer this linear regulation method as you have the choice to use any caps you want on the output of the 3.3V rail and also the 3.3V rail outputs very very clean power.

                                        As far as I know, only old video cards like the Radeon 9500/9700, and 9800 used the 3.3V rail more heavily (like 2 to 5 Amps).

                                        Comment


                                          Re: the gutless, bloated, and fried power supply hall of shame

                                          Originally posted by Pentium4 View Post
                                          Can I put a 12A ultra fast in parallel with the original 16A ultra fast? They're both MOSPEC with the same exact specs except the peak amperage. If not, I think two 12A ultra fasts in parallel would be better than a single 16A especially for efficiency, and combined probably good for ~19A
                                          The questino is, are they both really the same except for peak current?
                                          Less jewellery, more gold into electrotech industry! Half of the computer problems is caused by bad contacts

                                          Exclusive caps, meters and more!
                                          Hardware Insights - power supply reviews and more!

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