Процессор это главный камень на материнке под кулером, а всё вместе называется - системный блок. Сейчас время троечников, дилетантов. Человек не знает простых вещей, но хочет научить других.
@@GrafDavid76, блин, а я-то думал - ща узнаю куда девать процессоры старее 775-го сокета (775 ещё фунциклирует, имхо). хотя внуку тоже всё собираюсь чё-нибудь сварганить подвижное с моторчиков от СиДи-привода, тока руки всё не доходят... а ща игрушек в продаже... ой-ёй-ёй... кстати - с такого древнего привода у меня приятель взял микруху-усилок НЧ для наушников, куда-то в электрогитару самопальную вмантулил...
Вы видимо сами дилетант если считаете процессором только компютерный центральный процессор .А все остальные процессоры В МАТ. ПЛАТЕ по боку, видимо аналоговые детальки ?
@@ОдинРом все остальное, не процессоры! это могут быть контроллеры (мультиконтроллеры), драйверы (ШИМ), кодаки, мосты (чипсет), логика, счетчики, регистры, сумматоры, мультиплексоры, повторители, инверторы, транзисторы работающие в ключевом режиме, разная память и можно дальше продолжать - и это все будет не аналог )
At 12:55 the purple wire is always +5VDC, even if the motherboard is turned off. Gray wire is a signal that "all is well" and it's OK for the rest of the power to turn on.
I seriously think that before you give yourself a user name such as "The Professor", you need to learn what a CPU is. Here, I'll help.... The "CPU" is a processor chip that is "Inside" the "Computer". The "Computer" is NOT the "CPU". The "Computer" is a bunch of different "Components", including the "CPU", that are all put in a single unit and used to do "Computing" tasks.
Interesting. According to Wikipedia's disambiguation for CPU: "CPU may also refer to: Computer case or cabinet containing the central processing unit and possibly other components as well." I was aware that some cultures refer to the case and everything in it as the CPU as opposed to the peripheral devices, as they've modified the English meaning for their languages.
@@RatKindler Kory Stamper en.wikipedia.org In addition to her editorial duties, she presented many of Merriam-Webster's "Ask the Editor" videos, a series on the publisher's website and TH-cam that discusses the English language, especially unusual or controversial words and usages. MUST SEE th-cam.com/video/uLgn3geod9Q/w-d-xo.html @Rat Kindler
The grey wire is the POWER GOOD wire which shows that the ATX is working good , You can connect an led with a 470 ohms resistor and the ground lead for indication, this comes on when the green & black lead are connected The purple wire is STANDBY 24:00 ( 5.0 volts )which can be connected to an LED also via a 470 ohm resistor to ground. This indicator will come on when the ATX is plugged into the mains with the switch on the back is on even with the green wire in Off condition You also have to put a dummy load of 8 ohms / 50 watts on the 5 volt rail for the power supply to work properly , This resistor could get pretty hot so keep it isolated on a heat sink
The purple wire.... Useful for Arduino projects and the like. That 5 volt stand-by (as mentioned in comments). You can use that and ground to power an Arduino without having the 12 volt rail on(green connected). Then, in code, you can have Arduino pull the green to ground, turning on/off the 12 volt side based on time, inputs or such. 3D printers for example..... using the above, you can put the printer into a low power state when printing in complete (if enabled in code and gcode). Lights.... turn on/off 12 volt lights on motion, time or noise. 1 note.... some ATX PSU's (mostly newer ones) need a load on the 12 and/or 5v side to continue running longer than 15-30 seconds. A fan usually does the trick, though resistors can usually be used too.
Another thing I really like salvaging out of computers are the super strong neodymium magnets! You can get almost a guaranteed two large ones from any hard drive -- some small laptop drives may only have one magnet, but that is rare (the magnets in the laptop 2.5in HDDs are much smaller than desktop's 3.5in, but still very useful) Then, there are also at least two tiny ones that can be harvested out of the Optical drives (cd or dvd). They are what control the actual laser diode position, and are connected to a small metal frame by some awesomely strong glue, so they're sometimes hard to pry out. Just be careful, because not only are they super strong, but very FRAGILE. Slamming against metal can cause them to fracture. Or, their metal coating might flake off, exposing the magnet, which can easily break apart into a magnetic dust.
HA no way i didn't know there were magnets in the cd/dvd drive. Thank you kindly and to answer the dude above me asking what the purpose of neodymium magnets are.... Get some and find out
@@ZENITH-lp9gg In which? The hard drives? Or the CD drives? In the hard drives, you have to remove the thin metal cover. Usually this needs a small Torx (aka Star), like a T9 for desktop drives, and T6 for laptop. Once you have that off, inside you'll see a reflective disc (called "platters") , and a little arm reaching out over them. Follow that arm, and at the back of it will be a curved piece of metal. That's the magnet. If you have a steel nail (like, a wood nail), or paper clip, you can double check by putting it near. It'll pull, if you're really close. If it's the CD drive, it will take longer to explain and I'll do that tomorrow when I wake up. (midnight for me)
The two wires that you didn't use on the power supply... Grey: will give a voltage greater than 2.8 volts if the power supply is outputting a 3.3v, 5v, and 12v. A signal needed for the computer to boot. Purple: will be an always on +5v even if the PSU is turned off.
The Grey Wire should be the "Power Good" Signal. The blue -12V and white -5V Wire are outdated. These wires are no longer needed and not necessary anymore. These has been used for old Soundcards and serial Interfaces. In most cases these negative Voltages can only loaded up to 0.5A (500mA). The purple Wire is the +5V StandBy Supply. This wire delivers +5V at 2Amps even when the PSU is turned off.
I wish you would rename your title. "Do not throw away your old CPU Tower is better since the CPU is actually the chip on the motherboard. And what I was expecting to learn about. Interesting stuff nevertheless.
CPU = Computer Processing Unit AKA Nicknamed: Processor. Saw an IT Meme about this the other day. Surprising amount of people think the screen is the computer and the desktop tower is its power brick called a CPU. It hurt my brain reading the comments on that thread. If you have ever used a game console or movie player you should know better or at least have an idea lol.
Be careful to observe the computer power supply unit, (PSU) max rated current on negative wires. Most PSUs negative voltage rails have comparatively low current ratings.
@@VascoRocha the -12 volt lower raiting is the limit, and this may vary based on manufacturer, but typically -12v rail can do maybe 1 amp. Milage may very. I wouldn't push it.
Anyone charging batteries this way should know not to do so unattended or without close monitoring of voltages to prevent overcharging and burning your house down. You can find a controller to do this for you. Otherwise descent content and good job on the video.
Please rename your video from "Do Not Throw Away your Old Computer CPU" to "Do Not Throw Away your Old Computer PSU" Its a huge difference. CPU is a Computer Processing unit and a PSU is a Power Supply Unit.
Nicely done, that power supply salvage gives me a noce idea for decorating led in my room as i got plenty old psu eating dist in my store with no idea what to do with it. Thank u again
The 36v motor has high torque, not high inertia. High torque is why it snaps round in your hand, high inertia would make it slow to spin up. Inertia is "a quantity expressing a body's tendency to resist angular acceleration." whereas as torque is " the rotational equivalent of available linear force"
I guess it's a lingo thing. I was intrigued to see what salvage parts you could get from an old "CPU". It wasn't what I call CPU tho 😁 (I would just say "old computer")
When charging NiMH cells watch out that you dont overcharge it as the final charge voltage is about 1.4 Volts If left alone too long this could lead to a fire! I speak from experience as my house burnt down because a tenant overcharged a single AA cell!
purple wire provides 5V all the time despite the green wire being shorted to ground. it is labeled Standby power. and it is required for allowing such items as indicator leds and clocks to work in the computer. The grey wire is a Power OK wire used for the motherboard to communicate with the power supply in order to tell if the voltages are okay in the powersupply
I don't really know much about electronics, but this was so fascinating, and educational on the fundamentals by example that I am now really interested in learning more. Salvaging old computer parts to turn them into useful things sounds like a wonderful hobby. Thanks!
I have a couple of little 130 dc brushed motors that will run around 65,000 to 80,000 rpm. Its only for a few seconds because the brushes disintegrate but its pretty awesome 2 to 5 seconds worth of time.
No - and never buy any device that uses them either. They are little Bombs sitting around, espacially when they age. And don't get a mobile phone, or you risk cancer. Or a donkey, since they hurt when they kick you.
I watched the entire video but I didn't see any place where you used the CPU from that computer tower case. You removed the CPU heatsink but not the CPU.
I guess he meant the Cabinet. People refer to the cabinet with motherboard, power supply, ram, hdd and everything inside as one unit and in layman terms(India) as the CPU. So, basically a Desktop computer has 4 parts to run it, a CPU(cabinet/case), monitor, keyboard and mouse. That's how it goes here in common language. Sometimes people use to refer the case as PSU. This was way back in 90s when computer terminology/knowledge was in the initial phase for the common man. I guess some of these terminologies have just carried on with people.
@@davidlover6881 The CPU is also called a processor. The PSU is also called a Power Supply. A PC is also called a desktop computer. If the uploader puts those misnomers on youtube, then no one outside of India will take him seriously.
@@davidlover6881 exactly! And it's really annoying and angersome, that people don't call the things by their names, because I really thought that he will show something about CPU, but he didn't do that in the entire 30 min video, instead showing a whole of other things, like power supplies, motors from drives, etc., but not the friggin processor! And I've wasted so much time on watching it, instead of doing something useful for me!
@@davidlover6881 - what rubbish. Don't write us a long story about how YOU might have always incorrectly named the computer components. Just because you might call your dog "Ralph" doesn't mean that everyone calls them that.
CPU é a sigla para Central Process Unit, ou Unidade Central de Processamento. Ele é o principal item de hardware do computador, que também é conhecido como processador. A CPU é responsável por calcular e realizar tarefas determinadas pelo usuário e é considerado o cérebro do PC.
That means a CPU is a part on the mainboard, that one with the big cooler on it. Not that one that was showing in the video. en.wikipedia.org/wiki/Central_processing_unit
Using the negative 12v rail will limit you to 500ma to 1.5a max, the purple wire as stated by charlie gosh is always supplying 5v good for charging a phone but instead of the diode to limit voltage I've used the cheap lithium cell charge boards on the ends that way you have a proper micro usb to connect to and also the chip switches output power off at 4.1-4.2 as apposed to trickle charging permanently to death, great video.
Regarding the speed of your CDROM-motor you most probably did measure wrong. I highly doubt this motor would do such high RPMs. Laser RPM-meters just look for some change in contrast and if your measuring object has one contrasting line on each side you're doubling up your speed! If you get some out-of-balance rotational energies then you will make it even worse, it can get multiple times of what your motor really is turning around. For the power supply you made real mistakes: Any of the contacts on ATX plugs has standard function. So if you would have activated the mind before cutting all the wires you could have made up your mind by just googling "ATX power supply" and you would have seen the exact meaning of each wire. 2nd mistake was when you said "you can use the +5V wire and the +3.3V wire for charging 1.2V MiMH akkus. All rails (all voltage supplies) of an ATX power supply are ALWAYS meant to only be used Rail-to-Ground. This makes the 5V Rail producing and regulating for 5V only and only if you connect red as positive output and black wire(s) as negative. 3.3V can be used for 3.3V only (orange-to-black), Differential voltages inbetween 2 different rails may be half-decent with your multimeter and it may be working for very low current. But it never will work for higher output currents as an 3.3V OUTPUT simply isn't made to sink in the current produced by the 5.0V rail, it is made to DRIVE voltage output!!! This may just not work for some power supplies, it may even kill some power supplies and, of course, it will not be properly regulated output at all! DON'T DO THAT! I highly recommend not to do things like charging akkus from an ATX power supply as it does not have proper current limiting working with your akkumulator, it doesn't have proper and exact regulation of charging end voltage. You will very soon see your akkus dying from over-voltage or over-current. BTW: 12V rail normally isn't really regulated output, it is set for being somewhere in the ballpark all around 12V but it will vary with the load of any other rails in many, if not in most cases!
as for the rest of the parts of the power supply, remove the gold pins. the tiny stepper motor (it has a worm gear) can be used for a 3d printer, the torroid coil for the power supply are worth a little bit of $$. (i've taken apart 5 P.S., rebuilt 2 computers, and have a lot of motors, fans, gears, and parts!)
the purple wire is +5VSB - meaning it will always send 5V power even when the power supply is not turned on but connected to AC mains. AND the gray one is POWER OK. it is for the motherboard to understand that all the power rails are stabilized and CPU can feed on the power.
IMO _all_ PC power supplies carry a design defect that goes all the way back to the first IBM PC. The fan blows in the wrong direction! Instead of pulling in air from the back of the computer (ideally through an easily replaceable air filter), _pressurizing_ the internal of the cabinet, it _exhausts_ air _out_ the back, sucking in fresh air via every crack and opening in the computer -- pulling it _through_ the computer_ then through the _power supply_ -- and finally _out_ the back of the computer. This results in a _massive_ amount of _dust_ being deposited _everywhere_ inside the computer, _guaranteeing_ FAILURE within a finite amount of time! Personally, I, being a cynical old man, believe that this defect was NOT accidental, and has NOT "somehow been missed" by EVERY manufacturer over the decades! BTW, in an earlier life (before I changed careers, and then retired) I had a PC building and repair shop. A "brick and mortar" storefront. I saw so many dusty PCs... Moving along... That heat sink/fan would make an ideal partner for a Peltier module! With two of them you could build a nice little "portable personal air conditioner" unit. Or a desktop refrigerator. Or, with a wood stove (and something other than aluminum or other easily meltable metal on the "hot side"), a small DC generator (possibly enough output to charge a cell phone -- and remember, you can _stack_the Peltier modules to increase their output).
For some years now all the power supplies are down in the pc. It takes air from outside of the pc and blow it outside. Just the cheapest ones take air from the inside of the pc.
@TheWhisssper -- Good to know. As you might surmise I am not using the latest/greatest PC. It does do what I need, however. As an aside, I find it almost comical when I see how utterly _spoiled_ people are today. Even my "ancient" PC (a mere _four_ cores and 16 GB of DRAM) has more power than... well, _anything_ at all short of a "for real" mainframe not that many years ago. I hearken back to the early days. Could not afford an S-100 box but did eventually put just shy of four grand into my TRS-80 Mod 1 -- 48 KB (yes, kids, that's KILObytes!) DRAM, and ONE Kilobyte of video SRAM (16x64 text), with _four_ floppy drives (DSDD-80, 720 KB each -- the same capacity of the first gen of "standard" 3 inch floppies, but using regular five inch discs). Not much (even after I soldered in a lower case mod by piggybacking a 1KBx1 SRAM chip into the video memory, and a driver that Dennis Bathory Kitsz wrote in Assembler (the instructions, IIRC, were in his mimeo'd newsletter that I paid a modest subscription fee to receive -- well worth the cost!) People today are _so_ spoiled! I ran a wholesale camera repair shop on that rig which had less horsepower than a Sansa Clip! And it _worked,_ too! Logging/tracking/estimates/invoices/billing -- all with less memory than one of the little icons at the top of this window -- with an 8 bit Z80 running at 1.77 MHz! Later, the stone-age of the LAN began -- stuff like Televideo systems, with diskless workstations -- 64KB DRAM, 4MHz Z80, and an RS-422 port which was used to boot CP/M from its server -- another Z80 box, but with 128KB of DRAM (memory banked, since the CPU only had 16 address lines). There were two versions, one that could handle 8 workstations, and one that could handle 16 -- the bigger one also had a built-in tape backup drive. Both of course had a HUGE hard drive -- 30 MB, as I recall. Yes, those were the days... (I remember when hardware experienced a sort of "Cambrian Explosion" -- I bought an _unimaginably_ MASSIVE capacity SCSI drive -- 2 _GIGAbytes!_ It died after a few months of use. But, it "only" cost a bit over $900, what a bargain! (It really _was_ a bargain at that price!) Now, if you can even _find_ an ancient 2GB MicroSD it won't cost more than a dollar or two (and be a LOT faster and more reliable than that honkin' big five inch SCSI drive!) This is what I mean by spoiled. And I do tend to ramble, and "write long" (occupational hazard, sorry). Anyhow, it _is_ good to know that they're finally installing fans in the "NOT intended to self-destruct the machine" mode! (They say you can tell who the pioneers are -- they're the ones with the arrows in their backs. I think I read that in BYTE close to a half century ago. Tempus fugit...)
@@fauxque5057 -- *_Doesn't matter if the fan is a pusher or a puller. It's going to push, or pull dust._* Sigh... If it's pulling in air from the back -- the fan right up against the vents -- it is _trivial_ to place a *FILTER* in place _before_ the intake. However, if the fan is _PUSHING_ air OUT the back of the computer, it will be _pulling_ air _laden_ with dust through EVERY crack and opening in the device. Every diskette (yeah, some are still in use), every optical drive, every crevasse between cabinet panels, etc., etc., etc. -- and then, finally, _through_ the power supply and then out the back of the computer. There is NO way to filter all of those openings! But, if CLEAN *_filtered_* air is pulled through the fan and then through the entire computer, until _exiting_ via every opening and crevasse, there will NOT be a buildup of dust. It's as simple as asking if we'd rather have a "box" with POSITIVE or NEGATIVE air pressure inside of it. This concept is NOT rocket science. It's even used in medicine and especially medical _research._ Labs that handle deadly pathogens will be built so as to have NEGATIVE air pressure. If a door opens -- or even if a _leak_ were to occur -- air would be drawn _into_ the room with the pathogens -- rather than being _pushed_ OUT of the contaminated room. The same system is used in _hospitals,_ such as the one where I was at recently because I contracted Covid (even though I was double-vaxxed, as was my wife, from whom I contracted it). One of the nurses told me that they have negative air pressure rooms that are reserved for patients with Tuberculosis. In short, your assertion is _so_ absurd that I have to wonder if it's a sad attempt at humor.
Old computer is litrally rich mine of different useful parts and components. I myself still have parts from 90'th decade, even fully operational AT power supplies and I'm sure I will find practical usage for them. BTW very nice "junkyard"! :-)
Take a look at the current carrying capacity of the individual voltages. Especially the negative voltage (18:55). Have you ever checked the voltage drop of a silicon diode at different currents (characteristic curve in the data sheet)? Why are different charging methods used for lithium batteries, lead batteries and NiMh batteries and not just any voltages applied?
if you want to spin something with dc motors using a power supply watch this video, yes if dc motor is given electricity they spin that's for sure, these are the things i used to deal with when i was a kid
ну прям прохвессорр. похоже не дождусь я про процессор, а что делать с компонентами системного блока, я бы даже сказал компьютера - это уже обсосано со всех сторон и не так интересно. Опаньки, а прохвессорр тут переводчик, возможно в оригинале так и говорится про системник
The grey wire is called as power good signal wire for the motherboard. It's voltage is 5v and it indicates that all the voltages and current from the power supply are good and motherboard can reset the CPU. If this voltage is absent then power is not good. In my experience when the capacitors are faulty this wire doesn't work.
You said blowers could be made. The RPMs are high but would there be enough torque to spin the fan blades plus move large quantities of air? That was a small propeller. What type of application would the blower work well in? Cooling down a room? What about using it as a desktop computer fan? Might be a great idea especially if you had several
What were the inventions here? Just "oooh. I got motor taken from disk drive running" And before you are telling to charge batteries you should notice that different battery types should get charged different way. Some of the should get charged by static voltage, some batteries should get charget by static current, and some of them should adjust current during changing etc... And I didn't found any reason not to throw old crap away.
Another way to use old PC power unit, is to buy universal battery charger, like Imax B6 and you can charge anything! Because, batteries need more current, than a voltage (regulated current)
@@gabrielcornea9119 You could be right, except that "CPU" and "PC" are abbreviations of 'Central Processing Unit' and 'Personal Computer' respectively, in not any other language than the language of computer terminology, English. The components salvaged in this video are motors from an optical drive unit and a floppy disk drive, and a rather worn out, and a potentially unsafe Power Supply Unit. Don't do this at home folks, the motors are driven at potentially very dangerous speeds, for instance, a 3 cm rotor from an optical drive driven at 16000 RPM has an edge rotating at 900 kilometres per hour, about 75% of Mach 1, and could easily fragment, and detach from the bearing, a lethal projectile. The cavalier attitude of this experimenter is reprehensible.
@@tikaanipippin Yes, at this size it is not that dangerous. Metal can easily hold itself together at that load. But if you spin up a CD at that rpm, the edge speed will be much higher. If it shatters, you can easily loose an eye or two.
Do not throw away your old computer anyway,even if it doesn't work you can fix it. You have many memories withbyour old computers,phones,etc So it's like throwing away good memories and then forgetting them and then you want them back and then it's too late. Better to give them to someone instead of throwing them away
It's amazing how these videos get so many views and the channels get so many subs. There is no useful information presented, and the music is always obnoxious.
Purple is 5V standby, grey is Power good signal that tells the motherboard to start booting when all the voltages are present and in acceptable ranges.
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Процессор это главный камень на материнке под кулером, а всё вместе называется - системный блок.
Сейчас время троечников, дилетантов. Человек не знает простых вещей, но хочет научить других.
Базаров нет, всё видео просмотрел с перемотками и про процессор так и не увидел, автор всё моторчиками занят был, всё им игрушечки... 😜😂
@@GrafDavid76, блин, а я-то думал - ща узнаю куда девать процессоры старее 775-го сокета (775 ещё фунциклирует, имхо). хотя внуку тоже всё собираюсь чё-нибудь сварганить подвижное с моторчиков от СиДи-привода, тока руки всё не доходят... а ща игрушек в продаже... ой-ёй-ёй...
кстати - с такого древнего привода у меня приятель взял микруху-усилок НЧ для наушников, куда-то в электрогитару самопальную вмантулил...
Вы видимо сами дилетант если считаете процессором только компютерный центральный процессор .А все остальные процессоры В МАТ. ПЛАТЕ по боку, видимо аналоговые детальки ?
@@ОдинРом все остальное, не процессоры! это могут быть контроллеры (мультиконтроллеры), драйверы (ШИМ), кодаки, мосты (чипсет), логика, счетчики, регистры, сумматоры, мультиплексоры, повторители, инверторы, транзисторы работающие в ключевом режиме, разная память и можно дальше продолжать - и это все будет не аналог )
@@АндрейАндрей-д4э1х так его, под дых. Правильно.
At 12:55 the purple wire is always +5VDC, even if the motherboard is turned off. Gray wire is a signal that "all is well" and it's OK for the rest of the power to turn on.
brilliant mind!
Может кто-то понял при чём здесь процессор?
@@harizmator типичная ошибка ламера. Называть процессором системный блок.
I seriously think that before you give yourself a user name such as "The Professor", you need to learn what a CPU is. Here, I'll help.... The "CPU" is a processor chip that is "Inside" the "Computer". The "Computer" is NOT the "CPU". The "Computer" is a bunch of different "Components", including the "CPU", that are all put in a single unit and used to do "Computing" tasks.
Interesting. According to Wikipedia's disambiguation for CPU: "CPU may also refer to: Computer case or cabinet containing the central processing unit and possibly other components as well." I was aware that some cultures refer to the case and everything in it as the CPU as opposed to the peripheral devices, as they've modified the English meaning for their languages.
CPU
Central
Processing
*Unit*
How hard is that to understand?
@@amanofmanyparts9120 correct terminology!
@@RatKindler Kory Stamper
en.wikipedia.org
In addition to her editorial duties, she presented many of Merriam-Webster's "Ask the Editor" videos, a series on the publisher's website and TH-cam that discusses the English language, especially unusual or controversial words and usages. MUST SEE
th-cam.com/video/uLgn3geod9Q/w-d-xo.html
@Rat Kindler
Psu! Psu! Psu!
The grey wire is the POWER GOOD wire which shows that the ATX is working good , You can connect an led with a 470 ohms resistor and the ground lead for indication, this comes on when the green & black lead are connected
The purple wire is STANDBY
24:00 ( 5.0 volts )which can be connected to an LED also via a 470 ohm resistor to ground. This indicator will come on when the ATX is plugged into the mains with the switch on the back is on even with the green wire in Off condition
You also have to put a dummy load of 8 ohms / 50 watts on the 5 volt rail for the power supply to work properly , This resistor could get pretty hot so keep it isolated on a heat sink
The purple wire.... Useful for Arduino projects and the like. That 5 volt stand-by (as mentioned in comments). You can use that and ground to power an Arduino without having the 12 volt rail on(green connected). Then, in code, you can have Arduino pull the green to ground, turning on/off the 12 volt side based on time, inputs or such.
3D printers for example..... using the above, you can put the printer into a low power state when printing in complete (if enabled in code and gcode).
Lights.... turn on/off 12 volt lights on motion, time or noise.
1 note.... some ATX PSU's (mostly newer ones) need a load on the 12 and/or 5v side to continue running longer than 15-30 seconds. A fan usually does the trick, though resistors can usually be used too.
Thanks for the Arduino trick. A simple idea that can be very useful.
Another thing I really like salvaging out of computers are the super strong neodymium magnets!
You can get almost a guaranteed two large ones from any hard drive -- some small laptop drives may only have one magnet, but that is rare (the magnets in the laptop 2.5in HDDs are much smaller than desktop's 3.5in, but still very useful)
Then, there are also at least two tiny ones that can be harvested out of the Optical drives (cd or dvd). They are what control the actual laser diode position, and are connected to a small metal frame by some awesomely strong glue, so they're sometimes hard to pry out.
Just be careful, because not only are they super strong, but very FRAGILE. Slamming against metal can cause them to fracture. Or, their metal coating might flake off, exposing the magnet, which can easily break apart into a magnetic dust.
HA no way i didn't know there were magnets in the cd/dvd drive. Thank you kindly and to answer the dude above me asking what the purpose of neodymium magnets are.... Get some and find out
Where the magnets at,bro?
@@ZENITH-lp9gg In which?
The hard drives?
Or the CD drives?
In the hard drives, you have to remove the thin metal cover. Usually this needs a small Torx (aka Star), like a T9 for desktop drives, and T6 for laptop.
Once you have that off, inside you'll see a reflective disc (called "platters") , and a little arm reaching out over them.
Follow that arm, and at the back of it will be a curved piece of metal.
That's the magnet.
If you have a steel nail (like, a wood nail), or paper clip, you can double check by putting it near. It'll pull, if you're really close.
If it's the CD drive, it will take longer to explain and I'll do that tomorrow when I wake up. (midnight for me)
The two wires that you didn't use on the power supply... Grey: will give a voltage greater than 2.8 volts if the power supply is outputting a 3.3v, 5v, and 12v. A signal needed for the computer to boot. Purple: will be an always on +5v even if the PSU is turned off.
computer supply sector is the best part of video.
I like that so much!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
The Grey Wire should be the "Power Good" Signal. The blue -12V and white -5V Wire are outdated. These wires are no longer needed and not necessary anymore. These has been used for old Soundcards and serial Interfaces. In most cases these negative Voltages can only loaded up to 0.5A (500mA).
The purple Wire is the +5V StandBy Supply. This wire delivers +5V at 2Amps even when the PSU is turned off.
I wish you would rename your title. "Do not throw away your old CPU Tower is better since the CPU is actually the chip on the motherboard. And what I was expecting to learn about. Interesting stuff nevertheless.
Same here.
CPU = Computer Processing Unit AKA Nicknamed: Processor. Saw an IT Meme about this the other day. Surprising amount of people think the screen is the computer and the desktop tower is its power brick called a CPU. It hurt my brain reading the comments on that thread. If you have ever used a game console or movie player you should know better or at least have an idea lol.
Be careful to observe the computer power supply unit, (PSU) max rated current on negative wires. Most PSUs negative voltage rails have comparatively low current ratings.
exactly.... how many amps you think we could get from 24v wiring it at -12V and +12V ? I guess not so much
@@VascoRocha the -12 volt lower raiting is the limit, and this may vary based on manufacturer, but typically -12v rail can do maybe 1 amp. Milage may very. I wouldn't push it.
Just add some info: -12V is for Serial (RS232, COMn) connection, therefor PSU not responsible to provide high current on it
@@VascoRocha nn. 500mA max
Anyone charging batteries this way should know not to do so unattended or without close monitoring of voltages to prevent overcharging and burning your house down. You can find a controller to do this for you. Otherwise descent content and good job on the video.
Please rename your video from "Do Not Throw Away your Old Computer CPU" to "Do Not Throw Away your Old Computer PSU" Its a huge difference. CPU is a Computer Processing unit and a PSU is a Power Supply Unit.
🙂👍
CPU = Central processing unit, which is the main processor on your motherboard. You are not salvaging a CPU your salvaging parts from an old computer.
Why are you a ☝️🤓
I was about to mention this thank you
Nicely done, that power supply salvage gives me a noce idea for decorating led in my room as i got plenty old psu eating dist in my store with no idea what to do with it. Thank u again
🙂
The 36v motor has high torque, not high inertia. High torque is why it snaps round in your hand, high inertia would make it slow to spin up. Inertia is "a quantity expressing a body's tendency to resist angular acceleration." whereas as torque is " the rotational equivalent of available linear force"
Very good explanation, thank you on behalf of the others.
You speak very well and polite I like it a lot !😍
Sir that's not the CPU at all
Good knowledge n how to use old CPU HARD DICS. Very interesting
I guess it's a lingo thing. I was intrigued to see what salvage parts you could get from an old "CPU". It wasn't what I call CPU tho 😁 (I would just say "old computer")
PC is the word.
Very clever young man , multiple uses great work 👏
Thanks 😊
Замечательно, сначала откусываем все коннекторы, а потом думаем "и от куда же эти два провода"🤔
Лучше вообще все откусить и выбросить :)
Фотографируйте чаще на свой телефон и не будете думать что и к чему было припаяно .
@@александркостыренко-е6ц Вот так и происходит деградация...
No PO
Wah channel bagus ini nambah pengetahuan pisan ini mah euy... Lanjutkan juragan...jos pisan euy...
When charging NiMH cells watch out that you dont overcharge it as the final charge voltage is about 1.4 Volts
If left alone too long this could lead to a fire!
I speak from experience as my house burnt down because a tenant overcharged a single AA cell!
...
zabardast dada ... tumne kamal kardiya ... ek aam admi bhi is video ko samajh sakta hai asani se
Первый раз увидел заточку медного жала паяльника на токарном станке🤣😂🤣 Ржу не могу!
رهيب الباور سبلاي ... 12 و 5 و3 فولت بامبيرات متعددة ... تحتاج واحد رايق يعمل لها منافذ ويستفيد منها في الاختبارات الالكترونية
I was half expecting to see the first ever video of someone being shot dead with a hall-effect magnet. Careful dude!
Do we have to warn him? Couldn't we just let Darwin have his way with this one please?
could you explain for ignorant people? what's the risk?
purple wire provides 5V all the time despite the green wire being shorted to ground. it is labeled Standby power. and it is required for allowing such items as indicator leds and clocks to work in the computer.
The grey wire is a Power OK wire used for the motherboard to communicate with the power supply in order to tell if the voltages are okay in the powersupply
I don't really know much about electronics, but this was so fascinating, and educational on the fundamentals by example that I am now really interested in learning more. Salvaging old computer parts to turn them into useful things sounds like a wonderful hobby. Thanks!
Glad you enjoyed it!
I have a couple of little 130 dc brushed motors that will run around 65,000 to 80,000 rpm. Its only for a few seconds because the brushes disintegrate but its pretty awesome 2 to 5 seconds worth of time.
Dude! NEVER, EVER mess around with LiIon Batteries. They are little Bombs sitting around, espacially when they age.
No - and never buy any device that uses them either. They are little Bombs sitting around, espacially when they age.
And don't get a mobile phone, or you risk cancer.
Or a donkey, since they hurt when they kick you.
@@johncoops6897 🙄
I was waiting for the CPU-part..:)
I watched the entire video but I didn't see any place where you used the CPU from that computer tower case. You removed the CPU heatsink but not the CPU.
Exactly, I was wondering the same.
I guess he meant the Cabinet. People refer to the cabinet with motherboard, power supply, ram, hdd and everything inside as one unit and in layman terms(India) as the CPU. So, basically a Desktop computer has 4 parts to run it, a CPU(cabinet/case), monitor, keyboard and mouse. That's how it goes here in common language.
Sometimes people use to refer the case as PSU. This was way back in 90s when computer terminology/knowledge was in the initial phase for the common man. I guess some of these terminologies have just carried on with people.
@@davidlover6881 The CPU is also called a processor. The PSU is also called a Power Supply. A PC is also called a desktop computer. If the uploader puts those misnomers on youtube, then no one outside of India will take him seriously.
@@davidlover6881 exactly! And it's really annoying and angersome, that people don't call the things by their names, because I really thought that he will show something about CPU, but he didn't do that in the entire 30 min video, instead showing a whole of other things, like power supplies, motors from drives, etc., but not the friggin processor! And I've wasted so much time on watching it, instead of doing something useful for me!
@@davidlover6881 - what rubbish. Don't write us a long story about how YOU might have always incorrectly named the computer components. Just because you might call your dog "Ralph" doesn't mean that everyone calls them that.
CPU é a sigla para Central Process Unit, ou Unidade Central de Processamento. Ele é o principal item de hardware do computador, que também é conhecido como processador. A CPU é responsável por calcular e realizar tarefas determinadas pelo usuário e é considerado o cérebro do PC.
👍
I don't speak your language but i'm sure you are just as mad as i am that this video had no use of a cpu what so ever
That means a CPU is a part on the mainboard, that one with the big cooler on it. Not that one that was showing in the video.
en.wikipedia.org/wiki/Central_processing_unit
Using the negative 12v rail will limit you to 500ma to 1.5a max, the purple wire as stated by charlie gosh is always supplying 5v good for charging a phone but instead of the diode to limit voltage I've used the cheap lithium cell charge boards on the ends that way you have a proper micro usb to connect to and also the chip switches output power off at 4.1-4.2 as apposed to trickle charging permanently to death, great video.
А для чего второй блок питания?Или это генератор частоты для двигателя?
Вообще без схем плохо,хотя бы блок схему накидал-где что.
Лазеры обожаю... создал драйвер чтоб сразу несколько лазеров включал...но до этого штук 26 лазеров сжёг...
There are some traces of gold in there, if you locate, it would be helpful for many
Regarding the speed of your CDROM-motor you most probably did measure wrong. I highly doubt this motor would do such high RPMs. Laser RPM-meters just look for some change in contrast and if your measuring object has one contrasting line on each side you're doubling up your speed! If you get some out-of-balance rotational energies then you will make it even worse, it can get multiple times of what your motor really is turning around.
For the power supply you made real mistakes: Any of the contacts on ATX plugs has standard function. So if you would have activated the mind before cutting all the wires you could have made up your mind by just googling "ATX power supply" and you would have seen the exact meaning of each wire.
2nd mistake was when you said "you can use the +5V wire and the +3.3V wire for charging 1.2V MiMH akkus. All rails (all voltage supplies) of an ATX power supply are ALWAYS meant to only be used Rail-to-Ground. This makes the 5V Rail producing and regulating for 5V only and only if you connect red as positive output and black wire(s) as negative. 3.3V can be used for 3.3V only (orange-to-black), Differential voltages inbetween 2 different rails may be half-decent with your multimeter and it may be working for very low current. But it never will work for higher output currents as an 3.3V OUTPUT simply isn't made to sink in the current produced by the 5.0V rail, it is made to DRIVE voltage output!!! This may just not work for some power supplies, it may even kill some power supplies and, of course, it will not be properly regulated output at all!
DON'T DO THAT! I highly recommend not to do things like charging akkus from an ATX power supply as it does not have proper current limiting working with your akkumulator, it doesn't have proper and exact regulation of charging end voltage. You will very soon see your akkus dying from over-voltage or over-current. BTW: 12V rail normally isn't really regulated output, it is set for being somewhere in the ballpark all around 12V but it will vary with the load of any other rails in many, if not in most cases!
The bump on the rotor is a magnet not a Hall sensor. The Hall sensor is on the PCB labeled "H1".
CPU is a specific part of a computer, I thought this was going to be a completely different video
I think to myself look at how much joy this brings to him. Hopefully everyone finds something that makes them as happy as this guy is over this.
as for the rest of the parts of the power supply, remove the gold pins. the tiny stepper motor (it has a worm gear) can be used for a 3d printer, the torroid coil for the power supply are worth a little bit of $$. (i've taken apart 5 P.S., rebuilt 2 computers, and have a lot of motors, fans, gears, and parts!)
the purple wire is +5VSB - meaning it will always send 5V power even when the power supply is not turned on but connected to AC mains. AND the gray one is POWER OK. it is for the motherboard to understand that all the power rails are stabilized and CPU can feed on the power.
IMO _all_ PC power supplies carry a design defect that goes all the way back to the first IBM PC.
The fan blows in the wrong direction!
Instead of pulling in air from the back of the computer (ideally through an easily replaceable air filter), _pressurizing_ the internal of the cabinet, it _exhausts_ air _out_ the back, sucking in fresh air via every crack and opening in the computer -- pulling it _through_ the computer_ then through the _power supply_ -- and finally _out_ the back of the computer.
This results in a _massive_ amount of _dust_ being deposited _everywhere_ inside the computer, _guaranteeing_ FAILURE within a finite amount of time!
Personally, I, being a cynical old man, believe that this defect was NOT accidental, and has NOT "somehow been missed" by EVERY manufacturer over the decades!
BTW, in an earlier life (before I changed careers, and then retired) I had a PC building and repair shop. A "brick and mortar" storefront. I saw so many dusty PCs...
Moving along...
That heat sink/fan would make an ideal partner for a Peltier module! With two of them you could build a nice little "portable personal air conditioner" unit. Or a desktop refrigerator. Or, with a wood stove (and something other than aluminum or other easily meltable metal on the "hot side"), a small DC generator (possibly enough output to charge a cell phone -- and remember, you can _stack_the Peltier modules to increase their output).
For some years now all the power supplies are down in the pc. It takes air from outside of the pc and blow it outside. Just the cheapest ones take air from the inside of the pc.
@TheWhisssper -- Good to know. As you might surmise I am not using the latest/greatest PC. It does do what I need, however. As an aside, I find it almost comical when I see how utterly _spoiled_ people are today. Even my "ancient" PC (a mere _four_ cores and 16 GB of DRAM) has more power than... well, _anything_ at all short of a "for real" mainframe not that many years ago.
I hearken back to the early days. Could not afford an S-100 box but did eventually put just shy of four grand into my TRS-80 Mod 1 -- 48 KB (yes, kids, that's KILObytes!) DRAM, and ONE Kilobyte of video SRAM (16x64 text), with _four_ floppy drives (DSDD-80, 720 KB each -- the same capacity of the first gen of "standard" 3 inch floppies, but using regular five inch discs).
Not much (even after I soldered in a lower case mod by piggybacking a 1KBx1 SRAM chip into the video memory, and a driver that Dennis Bathory Kitsz wrote in Assembler (the instructions, IIRC, were in his mimeo'd newsletter that I paid a modest subscription fee to receive -- well worth the cost!)
People today are _so_ spoiled! I ran a wholesale camera repair shop on that rig which had less horsepower than a Sansa Clip! And it _worked,_ too! Logging/tracking/estimates/invoices/billing -- all with less memory than one of the little icons at the top of this window -- with an 8 bit Z80 running at 1.77 MHz!
Later, the stone-age of the LAN began -- stuff like Televideo systems, with diskless workstations -- 64KB DRAM, 4MHz Z80, and an RS-422 port which was used to boot CP/M from its server -- another Z80 box, but with 128KB of DRAM (memory banked, since the CPU only had 16 address lines).
There were two versions, one that could handle 8 workstations, and one that could handle 16 -- the bigger one also had a built-in tape backup drive. Both of course had a HUGE hard drive -- 30 MB, as I recall.
Yes, those were the days... (I remember when hardware experienced a sort of "Cambrian Explosion" -- I bought an _unimaginably_ MASSIVE capacity SCSI drive -- 2 _GIGAbytes!_
It died after a few months of use. But, it "only" cost a bit over $900, what a bargain! (It really _was_ a bargain at that price!)
Now, if you can even _find_ an ancient 2GB MicroSD it won't cost more than a dollar or two (and be a LOT faster and more reliable than that honkin' big five inch SCSI drive!)
This is what I mean by spoiled. And I do tend to ramble, and "write long" (occupational hazard, sorry).
Anyhow, it _is_ good to know that they're finally installing fans in the "NOT intended to self-destruct the machine" mode!
(They say you can tell who the pioneers are -- they're the ones with the arrows in their backs. I think I read that in BYTE close to a half century ago. Tempus fugit...)
Doesn't matter if the fan is a pusher or a puller. It's going to push, or pull dust.
@@fauxque5057 -- *_Doesn't matter if the fan is a pusher or a puller. It's going to push, or pull dust._*
Sigh...
If it's pulling in air from the back -- the fan right up against the vents -- it is _trivial_ to place a *FILTER* in place _before_ the intake.
However, if the fan is _PUSHING_ air OUT the back of the computer, it will be _pulling_ air _laden_ with dust through EVERY crack and opening in the device.
Every diskette (yeah, some are still in use), every optical drive, every crevasse between cabinet panels, etc., etc., etc. -- and then, finally, _through_ the power supply and then out the back of the computer.
There is NO way to filter all of those openings!
But, if CLEAN *_filtered_* air is pulled through the fan and then through the entire computer, until _exiting_ via every opening and crevasse, there will NOT be a buildup of dust.
It's as simple as asking if we'd rather have a "box" with POSITIVE or NEGATIVE air pressure inside of it.
This concept is NOT rocket science. It's even used in medicine and especially medical _research._ Labs that handle deadly pathogens will be built so as to have NEGATIVE air pressure. If a door opens -- or even if a _leak_ were to occur -- air would be drawn _into_ the room with the pathogens -- rather than being _pushed_ OUT of the contaminated room.
The same system is used in _hospitals,_ such as the one where I was at recently because I contracted Covid (even though I was double-vaxxed, as was my wife, from whom I contracted it).
One of the nurses told me that they have negative air pressure rooms that are reserved for patients with Tuberculosis.
In short, your assertion is _so_ absurd that I have to wonder if it's a sad attempt at humor.
Thanks from Algeria😄
The "Professor" doesn't even know what a CPU is!
Yep, 100% true. I guess he's a professor of ant's underpants.
Old computer is litrally rich mine of different useful parts and components. I myself still have parts from 90'th decade, even fully operational AT power supplies and I'm sure I will find practical usage for them.
BTW very nice "junkyard"! :-)
I have a BUNCH of stepper motors from junked copy machines!!!😁👍🏻
@@fookingsog I have only 7 hhahahah
Take a look at the current carrying capacity of the individual voltages. Especially the negative voltage (18:55). Have you ever checked the voltage drop of a silicon diode at different currents (characteristic curve in the data sheet)? Why are different charging methods used for lithium batteries, lead batteries and NiMh batteries and not just any voltages applied?
GOOD IDEA...KEREN BAAANG...
Помнится,я тоже как то из телевизора с кинескопом сделал ящик для обуви
Ящик по крайней мере нужен.
Thank you bro...
For share your knowlegde
Todella hieno ja selkeä video.
power supply ka purn istemaal koi inse seekhe..,,,🤩
nice video, but remember that -12V has only 0,5A!
Thank you very much for giving knowledge
You aren't much of a professor if you can't tell the difference between a computer CPU and an old CD ROM drive.
The purple wire is the Standby terminal and the gray wire is used for neutral conductors.
👍🏽
Good Info
amazing! perfect! I Love anything like that. thanks
idea genius thank's for sharing
if you want to spin something with dc motors using a power supply watch this video, yes if dc motor is given electricity they spin that's for sure, these are the things i used to deal with when i was a kid
Negative measurement should be in between blue (-12) and black (ground) :)
Old but gold. Literally
ну прям прохвессорр. похоже не дождусь я про процессор, а что делать с компонентами системного блока, я бы даже сказал компьютера - это уже обсосано со всех сторон и не так интересно.
Опаньки, а прохвессорр тут переводчик, возможно в оригинале так и говорится про системник
Great video. at 10:21 you mean CPU fan & not motherboard cooling FAN I think
Очень похоже, что тут профессора не отличают от процессора...
Здесь требуется ювелирная работа, интересно смотреть,но лучше что-нибудь из этого сделать.
Вот с блоком питания очень понравилось 👍
Не выбрасывайте процессор)) это же системный блок а не процессор)
А я так хотел увидеть, что же он сделает из процессора.
Еще никогда так много не узнавал о процессорах 😂. Автор что с тобой. Провода режет от атх. Зачем
The grey wire is called as power good signal wire for the motherboard. It's voltage is 5v and it indicates that all the voltages and current from the power supply are good and motherboard can reset the CPU. If this voltage is absent then power is not good. In my experience when the capacitors are faulty this wire doesn't work.
check your lathe, it has a lot of unwanted movement in the compound.
Looks like his tool is set a little low also.
You said blowers could be made. The RPMs are high but would there be enough torque to spin the fan blades plus move large quantities of air? That was a small propeller. What type of application would the blower work well in? Cooling down a room? What about using it as a desktop computer fan? Might be a great idea especially if you had several
Incredible video, I learned so much! I wish I could bring all my old "junk" electronics and apprentice with you for a while.
Dziękujemy.
Thanks 😊
я один купился на кликбейтное название -Не выбрасывайте старый процессор компьютера- ?, в видео нет вообще ничего про процессор
Потому что название по-бабушски - вместо системного блока -"процессор")))
The Professor сказал процессор - значит это и есть процессор!!! ;-))
А куда вы смотрите? А кулер на броне поезде....
パソコンは見てるだけで楽しいから捨てませんな～
古いゲームをやりたいときもありますし
Na verdade o certo do titulo seria "Não jogue fora o GABINETE do seu computador antigo" pois CPU seria o "PROCESSADOR"
no sabe español el muchacho este.
Clean computer once in a while and NEVER expose to toxic tobacco smoke and it could still be in use!
What were the inventions here? Just "oooh. I got motor taken from disk drive running"
And before you are telling to charge batteries you should notice that different battery types should get charged different way. Some of the should get charged by static voltage, some batteries should get charget by static current, and some of them should adjust current during changing etc...
And I didn't found any reason not to throw old crap away.
Another way to use old PC power unit, is to buy universal battery charger, like Imax B6 and you can charge anything! Because, batteries need more current, than a voltage (regulated current)
Don't trust a professor who uses CPU instead of PC, or even computer box.
that might be correct in his own language
@@gabrielcornea9119 You could be right, except that "CPU" and "PC" are abbreviations of 'Central Processing Unit' and 'Personal Computer' respectively, in not any other language than the language of computer terminology, English. The components salvaged in this video are motors from an optical drive unit and a floppy disk drive, and a rather worn out, and a potentially unsafe Power Supply Unit. Don't do this at home folks, the motors are driven at potentially very dangerous speeds, for instance, a 3 cm rotor from an optical drive driven at 16000 RPM has an edge rotating at 900 kilometres per hour, about 75% of Mach 1, and could easily fragment, and detach from the bearing, a lethal projectile. The cavalier attitude of this experimenter is reprehensible.
@@tikaanipippin That 900 is rather 90.
@@TheMateakos You are right 90 KPH. I must not exaggerate the dangers of unshielded spinning metal objects in the home.
@@tikaanipippin Yes, at this size it is not that dangerous. Metal can easily hold itself together at that load. But if you spin up a CD at that rpm, the edge speed will be much higher. If it shatters, you can easily loose an eye or two.
I took the PSU from a Playstation 3!! It gives out 12 Volts at 23.5Amps and 5Volts at 0.6Amps Very useful!
Nice video, thanks :)
the purple wire is the standby wire. After turning on the power supply with the switch, it gives 5V. Gray goes off the computer ...
or vice versa :)
I think, that’s good idea! Thank you so much!
Who would of thought using a computer power supply as a power supply was actually an invention.
Удивлён, почему так мало дизлайков... И, самое главное, почему ЭТО оказалось у меня в рекомендациях?
Такая же хня)))
thanks from Morocco
to avoid the sparks when you connect the wire connect the negative first and then the positive
Cool stuff.
What do you mean by CPU ? it is a PC the CPU is the Big Chip inside the PC!
CPU means central processing unit, isn't it!
Any way you've got style!
Also there are bulging capacitors on the output side.
Do not throw away your old computer anyway,even if it doesn't work you can fix it. You have many memories withbyour old computers,phones,etc So it's like throwing away good memories and then forgetting them and then you want them back and then it's too late. Better to give them to someone instead of throwing them away
Thank you for your videos!!
thanks for your video. this is a big help to me. looking forward to your next video. i also try to upload some repairing video.
Super! Thank your very much!
The CPU is a component not the entire computer case
... but shirley the case is a component protection unit?
It's not a component!!
And don't call me Shirley.!!
Professor lost gloves of right hand or the dvd drive was soooo dirty that glove was needed 🤣🤣🤣🤣
🤣 No its not that. Actually i have to operate camera touch screen with my right hand
@@mrelectron_alternator aah okay 😁
It's amazing how these videos get so many views and the channels get so many subs. There is no useful information presented, and the music is always obnoxious.
It's about time somebody said something other than myself
Saves me the trouble. I got cheated into thinking he was actually going to repurpose the CPU.
I suggest not watching then if it triggers you all
@@fauxque5057 They don't "trigger" me, whatever that means, but I am now judiciously avoiding them.
BECAUSE U ND 17,99999 PEOPLE HAVE OLD COMPUTERS
Purple is 5V standby, grey is Power good signal that tells the motherboard to start booting when all the voltages are present and in acceptable ranges.
ດຕຄຕຄຕຄູຄຕຕູຕຕຕຸ