I find it curious that people who are on UA-cam watching videos on making a light-duty, benchtop power supply from an ATX PS (not your everyday project for your everyday UA-cam user, after all) are bitching about the music rather than muting their sound. If you can't figure that out, people, perhaps playing around with sharp and/or hot objects is probably not for you. Well done, RF.Odel. Thanks for your efforts.
You apparently wired your rocker switch backward. 1 is on, 0 is off. It looks like you pressed the 0 to turn it on. If it works, I guess it's ok, but someone may plug it in thinking it's turned OFF when it's actually in the ON position. Also, FWIW, it would have been much better if you had replaced the cheesy music with some narrative explaining what you are doing, and why, as you move through the conversion, for the novice tech who is trying to duplicate the project. Yeah, it's about as simple a project as it gets, but a little dialog would have taught a lot to those that are new to this kind of thing.
i agree Example, a novice would not pick up on the fact that the terminals that are mounted on the housing NEED TO BE ISOLATED from each other example, a novice may think.. fuck this, i'll just get a few nuts and bolts and screw it on and then..... BANG HEHEHE perhaps it may have been helpful to explain that the terminals must not have a conductive path to each other and that they are insulated from the housing i agree, a narrative would have been better than this teeny bopper shit that seems to now be the irrittating norm on the net
Agree, this music is such shit! Why is it every time I come across something like this there has to be such shitty music just on repeat for the whole friggen video - SCREW OFF!
You already know that the "-12V" connection delivers only a few milliamperes? The -12V connector was needed by older sound cards to produce a balanced output signal. In today's power supplies you will hardly find -12V or not at all, because it is unnecessary.
I dont mean to be off topic but does anyone know of a tool to get back into an Instagram account..? I stupidly lost the login password. I would appreciate any help you can offer me.
@Maximilian Santiago Thanks so much for your reply. I got to the site on google and Im in the hacking process now. Seems to take a while so I will reply here later with my results.
Its an idea to remove all the extra wires, they arent needed, and just get in the way. Also use a different coloured post for each voltage, to help removed accidental wrong connection
This is a simple yet neat design, but four wires for the 12v rail are way too much, anyway it depends on the power delivered by the single rail. For example, if you have a 18AWG wire, it can deliver an ideal 16A of current, tuned down to 10A to be safe. If the 12V rail can deliver a maximum of 20A two wires might be enough to meet the power limits of the PSU - and by the way, small electronic projects for beginners rarely take so much current. The same rationale could be applied to the other rails. Usually the -12V and -5V (if you have it) gives a fraction of amp, so you will never see more than a single wire from the board for each of them. An overall classic for a beginners project. It teaches an enormous amount of stuff about electronics.
What a load of crap, you can never have to large wire gauge, and piss off with powergrid calculations. And this teaches absolute nothing about electronics.
use whatever you want, if you have the specific tool that's good. if you are enthusiast in DIY no matters the tool, you can upgrade tools when practice more get an advanced level :D
This also was my first question :-) The PS in this video will not work very long: 3 def. cap., maybe more. I have replaced many PS in the last years repairing computers.
Does no-one else see the bulging capacitors on the side of the main board where all the voltage wires are connected? I'm not sure if it would support extended use. Though that's not likely the intended use for this project, bulging caps just make my spidey sense tingle in general
I have a psu that worked, connected green to black and it turned on the fan. After cutting the wires, when I connect green to black, it spins the fan for half on sec and then it stops. And idea? The purple 5v has power for an led, but the other wires stop after half second
As a general rule, how many Amps can someone expect to get through (or out of) the 12v terminal using a 550 watt power supply, assuming that ALL 12v wires are soldered together? In other words, how many amps will most 550 watt power supplies provide.
Old ones can supply no more than 30-35 amps, however new psus have the main power in the 12v rail so there are power supplies that can provide up to 50 amps, i assume yours is about 20-32 amps
You can work it out WATTS = Volts x Amps you know the Watts you know the Volts Divide it into it and solve for Amps or.. you can just pop on a multimeter in Series and measure the Amps
I have a 850w thermaltake and need to know whether I still need a dummy load and which one to get. I get the whole led and resister part but still don't understand which dummy load to get as my psu is a newer style and some people say I don't need one. Output Specification AC INPUTInput Voltage: 100V-240V Input Current: 12A Frequency: 47Hz-63HzDC OUTPUT+3.3V+5V+12V-12V+5VSBMax Output Current 25A 25A 70A 0.8A 3.0A Max Output Power 130W 840W 9.6W 15W Continuous Power850W
Not too terribly. I did the same thing with my old PSM. I would just advise maybe adding a secondary cooling fan on the outside of the box to help the main fan keep up with the added air flow restriction. It works a treat. Mine now has no problem keeping up with any amount of high power draw. A simple fix.
@@efdawahfan oh, thank you! I got different explanations before. One of them said it's to smooth out when connecting devices but isn't it whar a capacitor does?
@@VanDerLaars A capacitor does something similar, but this is a different situation. The resistor puts a load on the power supply, to stabilize it under abrupt load changes. Similar: If you are trying to push a car, it helps a lot if the car is already rolling a little bit. If you just slam into a stationary car, you'll only hurt yourself, and the car will go nowhere. :-)
Hi, thank you for this vidéo. But why do you connect the 3.3v with the 3.3v sense? and is there a great importance in the ciment resistance value of 5homs?
Thierry ON Well 5 ohms is used to ensure a steady 1 amp load on the 5v rail but if you have two 10 ohm resistors you can put them in parallel to get 5 ohms and make sure it still has a 1 amp load. The dummy load requirement varies by power supply and some might not require it at all.
There is no voltage rating for LEDS, although the internal voltage drop varies a little, depending on the color. The only concern is current (should be less than 20 ma.) so any resistor between 220 and 470 ohms will work fine. If you want an indicator on the 12V lines, use 470 - 1,000 ohms. Be aware that LEDS are polarized, and will not turn on if connected in the wrong direction. The flat edge (cathode) should face the ground (or negative) connection.
So what can I do with the -12v? I dont have a use for this by itself, but I have heard people say I could combine it with one of the +12 lines to make 24v...is this accurate?
Excellent and didactic video. I made the same ATX converting power supply following your diagram and adding an step-up booster to increment the 12v to 18v which support 15 A, in order to connect an drill. It works but the problem its the dummy load resistor overheats (it is a 5 wats but 9 ohms; the only i found in my store). Is that the cause of the overheating? Thanks for your aid.
Most power supplies wont need the 10W resistor on the 5V rail and the green and black power wire should be a 10K resistor instead since most supplies have a mains power switch that should be used in this case. - Reference: playtool
Hi Mywindow, I didn't see a mains switch on his PSU. I've got a Dell PS-5201-7D ATX PSU that I'm planning to use for a similar supply, and it doesn't have a mains switch either. I think I'm going to mount the PSU box to a board, add a master (mains) power switch, and maybe add a front panel on which to mount the binding posts and LEDs (maybe a Chinese digital volt / current panel-mount meter, too), just to stay well away from the big transformer that sits just behind that grill where he mounted his components. No sense tempting Mr. Murphy!
TURN THE GODAWFUL NOISE OFF. Don’t tell me to turn the volume down. I like to keep the sound on IN CASE something is said that is of value. NOBODY EANTS TO HEAR THAT BRAIN DAMAGING NOISE.
Nice simple, useful conversion, thanks. But your soldering techniques leave a lot to be desired. They will result in cold solder joints, increasing the resistance of the connection, reduced current. voltage drop, and the potential for a broken connection. Sorry.
Wire core is way too thin for the maximum current used in each line and EVERYTHING is a bump away from a short! Looks cool and compact but not practical at all.
i have done al the work, but when i power up it does nothing, when i remove the 5w resistor it starts up , but when i put a load on the 12v , the psu stops working until i remove the load ? please help ? marco
I have found the problem, in the big plug there is on pin 1 brown plus orange wire, i did those 2 together now he wirks, i had the problem bij 2 psu’s now they both work, it seems to be an power ok wire.
I found this on the internet - Note that most power supplies have either a mauve or brown wire to represent "power good"/"power ok". Check the ATX plug (the plug with many connections) to see if there is a small mauve or bown wire plugged into the same hole as an orange wire (+3.3V) or a red wire (+5V). If the small wire is connected to the orange in the ATX plug then do the same, hook these two together. If it is connected to the red, then hook it to the red wire. This wire must be connected to either an orange wire (+3.3V) or a red wire (+5V) for the power supply to function. When in doubt, try the lower voltage first (+3.3V). 👍👍
Yes, smart, taking an old psu, full off noise...... seen the prices of computer psu's of seasonic these days.....such a one you can use only 200euro.....
Hi, thank you very much. Could you please advise the part number of the red and black screw terminals...maybe a weblink to purchase. Also for the on / off switch. I would really like to make this.
If you have a 110 supply and 110 mains voltage the only thing you would need to change might be the switch used to break the mains connection, but if it can handle 10A at 110v you should be fine.
So 5V across 5 ohms draws 1Amp. Amps x volts = watts. 5 volts x 1Amp = 5 watts. So I would use a 10W rated resistor to give a safety margin. Unless you fancy a very hot 5 watt resistor and a small house fire to explain 😬
Hi, please help.. The green light is on, the red goes on for less than 1sec and then off. No power output at the outputs... Load resistance 10watt 5.6 Ωhm
My Powersupply starts to hum when I have only 5V or 3.3V hooked up to something. I do not have a Resistor, and dont need one since I never start it without some kind of load hooked up to it. When I connect a 12V Motor to 12V though it runs fine. When I connect that Motor to 5V it still runs fine but the powersupply generates a noticably internal huming sound. Any idea what that might be?
Excessive current flows through motor and motors internal current causing the hum, try using a capacitor about 2200uf and 20volt and needs a parallel resistor whose resistance must be similar or lesser about -5% and wattage must be some high kw. Or use some flyback circuit.
@@peteraugust5295 Yes the hum can come from the power supply because of the inrush current that needs by the motor and also the ac current generated by the motor winding itself. Whenever you connect a motor with some pwm based power supply, there's a need to remove those current, otherwise can burn the ic that controls the psu voltage and phases, this is why computer dc fan were designed where coils were stable but magnets moves and direct connection are not done rather MOSFET based connection are done within the circuit. You have to check how much current your motor draws using a clamp meter then needs a capacitor to filter out current properly and also needs some Zener diode and load resistor to remove the back fire current comes from the motor. Circuit are available on google you can find them.
This resistor is on SELV side (low voltage output side) and is due to the minimal load on 5V branch necessary to leave the main power stage on. Without load in 5V output the supply will not provide power on other outputs (3.3V, +-12V). Is necessary to consider the original purpose of this power supply - in computer. ATX source was not designed as laboratory power supply. Load on 5V branch is associated with booting sequence of motherboard (MB). Probably this is either protection in case of faulty MB, or an power saving option I dont know which, but one of them. Surely, this power resistor is NOT due to discharging big capacitor on primary side.
Can anyone help? I am using a 12v 1200ma plug in adaptor to power a 1s lipo Boldclash PO1 batt charger. It accepts input from 6-15 volts. For curiosity I metered the output of this wall charger and it reads 16.4 volts! Why so much higher than what it is labeled? I metered several others I found and they also read several volts more than labeled. No loads on any of them. Is it okay to use it? It appears hefty enough. Weighs a lot more than others and has larger guage plug wire.
You have fallen into a common trap. Unregulated power supplies can be several volts higher than what's on the label. When you put the power supply under load, the voltage will say to be roughly then rating on the label.
I know very little about this, can you tell me why you need all the cables and not just one of them? assuming you will use less than 100 W of power. what is the requirement to power security cameras on a distance of 50 meters? do I need thicker cables? do I need a more powerful power supply? what happen if I draw 400 W off a 500 W rated cheap power supply, is it safe or it will damage the power supply fast? Sorry for my English
I have one serrious question for those who want to help me I have atx akyga ak-b1-400 +3,3V 23A, +5V 25A, +12V 18A , -12V 0,5A +5V Sb 2,5A total power 400W. Which buck Amperage should i use and what value should be the fuse inside?
I find it curious that people who are on UA-cam watching videos on making a light-duty, benchtop power supply from an ATX PS (not your everyday project for your everyday UA-cam user, after all) are bitching about the music rather than muting their sound. If you can't figure that out, people, perhaps playing around with sharp and/or hot objects is probably not for you.
Well done, RF.Odel. Thanks for your efforts.
Brian..........well said.
touche
well said, the music isn't even that bad
7:18 note: Indian logic used: flick switch to OFF to turn power supply ON
The best part of that video is the Head Shrink comment. You'll definitely need one after listening to that music.
kabilmla
You apparently wired your rocker switch backward. 1 is on, 0 is off. It looks like you pressed the 0 to turn it on. If it works, I guess it's ok, but someone may plug it in thinking it's turned OFF when it's actually in the ON position. Also, FWIW, it would have been much better if you had replaced the cheesy music with some narrative explaining what you are doing, and why, as you move through the conversion, for the novice tech who is trying to duplicate the project. Yeah, it's about as simple a project as it gets, but a little dialog would have taught a lot to those that are new to this kind of thing.
i agree
Example, a novice would not pick up on the fact that the terminals that are mounted on the housing NEED TO BE ISOLATED from each other
example, a novice may think.. fuck this, i'll just get a few nuts and bolts and screw it on
and then..... BANG HEHEHE
perhaps it may have been helpful to explain that the terminals must not have a conductive path to each other and that they are insulated from the housing
i agree, a narrative would have been better than this teeny bopper shit that seems to now be the irrittating norm on the net
Agree, this music is such shit! Why is it every time I come across something like this there has to be such shitty music just on repeat for the whole friggen video - SCREW OFF!
Yeah I remember watching and thinking "Oh man, I hope those connectors are isolated from the case..."
Just love the way they explain what they are doing and what components to use ETC.
You already know that the "-12V" connection delivers only a few milliamperes?
The -12V connector was needed by older sound cards to produce a balanced output signal.
In today's power supplies you will hardly find -12V or not at all, because it is unnecessary.
I dont mean to be off topic but does anyone know of a tool to get back into an Instagram account..?
I stupidly lost the login password. I would appreciate any help you can offer me.
@Malcolm Winston instablaster =)
@Maximilian Santiago Thanks so much for your reply. I got to the site on google and Im in the hacking process now.
Seems to take a while so I will reply here later with my results.
@Maximilian Santiago it worked and I finally got access to my account again. I'm so happy!
Thanks so much you saved my account :D
@Malcolm Winston No problem =)
Its an idea to remove all the extra wires, they arent needed, and just get in the way. Also use a different coloured post for each voltage, to help removed accidental wrong connection
This is a simple yet neat design, but four wires for the 12v rail are way too much, anyway it depends on the power delivered by the single rail. For example, if you have a 18AWG wire, it can deliver an ideal 16A of current, tuned down to 10A to be safe. If the 12V rail can deliver a maximum of 20A two wires might be enough to meet the power limits of the PSU - and by the way, small electronic projects for beginners rarely take so much current. The same rationale could be applied to the other rails. Usually the -12V and -5V (if you have it) gives a fraction of amp, so you will never see more than a single wire from the board for each of them.
An overall classic for a beginners project. It teaches an enormous amount of stuff about electronics.
What a load of crap, you can never have to large wire gauge, and piss off with powergrid calculations.
And this teaches absolute nothing about electronics.
So, can i just use 1 wire? Or use 2 wire?(sorry bad English)
Brilliant - the circuit diagram says it all and the video is very good and self explanatory.
I've just made one of these with a mini-ATX PS. Space is not so much, so it's a little difficult, but I'm really proud.
Anyone else notice he wired the on/off switch backwards?
Nice video. Secondary line needs new capacitors. Swollen caps.
If you guys look closely at 7:20 , he connected the wires the opposite on the switch lol, When he presses the O side, its supposed to be OFF not ON..
joshua199628 O side is Off. That is right.
This is not the only trouble here. Watch on capacitors!
Don't use a lighter to shrink your tubing! If you can't afford a proper heat gun, just use your soldering iron!
A heat gun is good, also a propane small torch.
use whatever you want, if you have the specific tool that's good.
if you are enthusiast in DIY no matters the tool, you can upgrade tools when practice more get an advanced level :D
Vielen Dank für die ausführliche Erklärung und diesen schönen Schaltplan
Hello i have a doubt...why you add one dummy resistor in between on 5v (10w 5ohm ) and the ground.....
this resister act like mother board is connected
Why do not you change the defective capacitors of the stabilization circuit?
This also was my first question :-) The PS in this video will not work very long: 3 def. cap., maybe more.
I have replaced many PS in the last years repairing computers.
Does no-one else see the bulging capacitors on the side of the main board where all the voltage wires are connected? I'm not sure if it would support extended use. Though that's not likely the intended use for this project, bulging caps just make my spidey sense tingle in general
Ya, i saw them. He neeed to change them
-12V is only 0.3A connecting with 12V (15A) will be 24V total, but how many Amps can be used (only 0.3A or 15A)?
I have a psu that worked, connected green to black and it turned on the fan. After cutting the wires, when I connect green to black, it spins the fan for half on sec and then it stops. And idea? The purple 5v has power for an led, but the other wires stop after half second
Same problem here.
I gave it also 5v and 12v small loads, won't start...
Have you managed ?
@@MilanTheMan69 yes. Connect the brown wire (follow the path to 3.3sense) to one of the orange wires(3.3v)
@@pythoneatssquirrel It works.
Thank you friend. 🙏
This was faster then I thought.
Did you put a resistor on a 5V lead-some ATX's must have it to start up.
wow great recipe I will try it but probably went too heavy on the coconut shavings lol
Superb conversion of computer ps to bench ps. Kudos and post such videos.
I like the design, but that "music" was very annoying.
3 of your blue electrolytic capacitors situated next to your wires that you are working with, the tops look bloated and are in need of replacing.
I don't know why :D
, but they I saw at start, one caps is bloated.
As a general rule, how many Amps can someone expect to get through (or out of) the 12v terminal using a 550 watt power supply, assuming that ALL 12v wires are soldered together? In other words, how many amps will most 550 watt power supplies provide.
Old ones can supply no more than 30-35 amps, however new psus have the main power in the 12v rail so there are power supplies that can provide up to 50 amps, i assume yours is about 20-32 amps
You can work it out
WATTS = Volts x Amps
you know the Watts
you know the Volts
Divide it into it and solve for Amps
or.. you can just pop on a multimeter in Series and measure the Amps
I have a 850w thermaltake and need to know whether I still need a dummy load and which one to get. I get the whole led and resister part but still don't understand which dummy load to get as my psu is a newer style and some people say I don't need one.
Output Specification
AC INPUTInput Voltage: 100V-240V
Input Current: 12A
Frequency: 47Hz-63HzDC OUTPUT+3.3V+5V+12V-12V+5VSBMax
Output Current 25A 25A 70A 0.8A 3.0A Max Output
Power
130W 840W 9.6W 15W
Continuous Power850W
Why heat the 10 watt resistor
I imagine all these cables will affect your cooling.
Not too terribly. I did the same thing with my old PSM. I would just advise maybe adding a secondary cooling fan on the outside of the box to help the main fan keep up with the added air flow restriction. It works a treat. Mine now has no problem keeping up with any amount of high power draw. A simple fix.
Why that 5 ohms dummy load is necessary? I think is 1A running there, could be 50 ohms or even 100 ohms?
Es ist eine Super Sache Gerät. Bravo
Two questions: why do u need a load resistor? And what is the negative wire used for?
Dummy load to trick the ATX ps that is connected to a mother board that way it will not go in to stand by mode.
@@efdawahfan oh, thank you! I got different explanations before. One of them said it's to smooth out when connecting devices but isn't it whar a capacitor does?
@@VanDerLaars A capacitor does something similar, but this is a different situation. The resistor puts a load on the power supply, to stabilize it under abrupt load changes. Similar: If you are trying to push a car, it helps a lot if the car is already rolling a little bit. If you just slam into a stationary car, you'll only hurt yourself, and the car will go nowhere. :-)
@@dalexplym4882 much better explanation with the car! Thank you!
Video con spiegazione fatte bene. Potrebbe postare uno schema con l'aggiunta di un voltometro/amperometro. grazie
Hi, thank you for this vidéo. But why do you connect the 3.3v with the 3.3v sense? and is there a great importance in the ciment resistance value of 5homs?
The 5 ohm resistor on the 5v rail is used as a dummy load, as some power supplies will shut down if no load is detected.
Joseph Svensson , I know that but the value of 5 ohms is it important ? can i use 10 ohms for example? thx
Thierry ON Well 5 ohms is used to ensure a steady 1 amp load on the 5v rail but if you have two 10 ohm resistors you can put them in parallel to get 5 ohms and make sure it still has a 1 amp load. The dummy load requirement varies by power supply and some might not require it at all.
The black wire you cut right before step 5. What and how did you do with the other cut end that went to the supply unit?
SIR, ANOTHER QUESTION IF U WOULD MIND, WHAT IS THE VOLTAGE OF THE LED? TNX AGAIN, KEEPSAFE
There is no voltage rating for LEDS, although the internal voltage drop varies a little, depending on the color. The only concern is current (should be less than 20 ma.) so any resistor between 220 and 470 ohms will work fine. If you want an indicator on the 12V lines, use 470 - 1,000 ohms. Be aware that LEDS are polarized, and will not turn on if connected in the wrong direction. The flat edge (cathode) should face the ground (or negative) connection.
great video sir, If i tried to do this it would blow up
Отличное видео, все просто и понятно. Спасибо.
очень много вспухших конденсаторов в цепях питания 12 вольт и 5 вольт
cool....nice mix power supply for everything needed
すみません、緑と黒を繋いでも電源が入らなのですがどう繋げば出力出来ますか
WARNING Must be watched muted because of the inappropriate mind numbing vomit inducing background music!
Thanks 👍
Muy buen video, estoy haciendo el proyecto, una pregunta, la resistencia de 10w que función cumple?
So what can I do with the -12v? I dont have a use for this by itself, but I have heard people say I could combine it with one of the +12 lines to make 24v...is this accurate?
From other videos I've watched, the -12v can be used with the existing voltages to make new ones. Don't know how that works though.
12V + and 12V - connected opposite poles gives 24V across.
@@TheJagjr4450 Awesome! Thank you for the knowledge.
Does that apply to the amperage as well when using the 12V + & - rails together?
Cheers
-12V is only 0.3A connecting with 12V (15A) will be 24V total, but how many Amps can be used (only 0.3A or 15A)?
Excellent and didactic video. I made the same ATX converting power supply following your diagram and adding an step-up booster to increment the 12v to 18v which support 15 A, in order to connect an drill. It works but the problem its the dummy load resistor overheats (it is a 5 wats but 9 ohms; the only i found in my store). Is that the cause of the overheating? Thanks for your aid.
Yes, replace it with a higher ohmn resistor
@@everythingfeline7367 Thanks a lot. I'll try
you solder each wire of the same color to get all current (amper) available in the PSU?
Nop, all wires come from the same place, thats needed when going to connect something big
Did you realize that that power supply will last very little?
It has the swollen electrolytic capacitors that are to be replaced.
Most power supplies wont need the 10W resistor on the 5V rail and the green and black power wire should be a 10K resistor instead since most supplies have a mains power switch that should be used in this case.
-
Reference: playtool
Hi Mywindow, I didn't see a mains switch on his PSU. I've got a Dell PS-5201-7D ATX PSU that I'm planning to use for a similar supply, and it doesn't have a mains switch either. I think I'm going to mount the PSU box to a board, add a master (mains) power switch, and maybe add a front panel on which to mount the binding posts and LEDs (maybe a Chinese digital volt / current panel-mount meter, too), just to stay well away from the big transformer that sits just behind that grill where he mounted his components. No sense tempting Mr. Murphy!
TURN THE GODAWFUL NOISE OFF.
Don’t tell me to turn the volume down.
I like to keep the sound on IN CASE something is said that is of value.
NOBODY EANTS TO HEAR THAT BRAIN DAMAGING NOISE.
Why the 10W 5 ohm resistor? What is that for?
Dummy load
@@relaymatik5984 can i make this dummy load with 10 Watt 22 Ohm between 12V and GND ?
@@metinplayer1999 no use only 5v
Why this 5 ohms dummy load is necessary? I think is 1A running there, could be 50 ohms or even 100 ohms?
Very professional-neat job. thank u 4sharing!
SIR, IF I CONNECT THE GREEN AND BLACK, ANY BLACK WILL THE FAN WILL RUN OR I SHOULD PUT THE LED STANDBY CONNECTION,? TNX FOR REPLY.
SIR, WHAT IS UR ANSWER? IF U DONT MIND. TNX
Just connect the green to any black. The standby is just for information, and is not necessary at all.
Je vous suit merci très intéressant le réssiclage
Interesting video. I would like to ask a question. What is the function of the power resistor?
Dummy load to trick the ATX ps that is connected to a mother board that way it will not go in to stand by mode.
@@jomhdz Thanks
Nice simple, useful conversion, thanks. But your soldering techniques leave a lot to be desired. They will result in cold solder joints, increasing the resistance of the connection, reduced current. voltage drop, and the potential for a broken connection. Sorry.
Why? Care to explain. I'm noob so i don't know.
That's some obnoxious music, otherwise, very informative.
can we use 24V (+12v and -12v) to?
yup
Good Odel, can we step up to 64volts in this same setup? pls make some videos. thanks
Girdhharm santosh kumar
Step 4. install components. What components? Where's the list?
It looks like there are bad capacitors on that psu?
Wire core is way too thin for the maximum current used in each line and EVERYTHING is a bump away from a short!
Looks cool and compact but not practical at all.
Muy buena idea y bien llevada a la practica.
Well done 🥇how many the resistor? Thanks
great presentation thanks and God Bless : )
i have done al the work, but when i power up it does nothing, when i remove the 5w resistor it starts up , but when i put a load on the 12v , the psu stops working until i remove the load ? please help ? marco
Marco Collignon i have same problem.
I have found the problem, in the big plug there is on pin 1 brown plus orange wire, i did those 2 together now he wirks, i had the problem bij 2 psu’s now they both work, it seems to be an power ok wire.
I found this on the internet - Note that most power supplies have either a mauve or brown wire to represent "power good"/"power ok". Check the ATX plug (the plug with many connections) to see if there is a small mauve or bown wire plugged into the same hole as an orange wire (+3.3V) or a red wire (+5V). If the small wire is connected to the orange in the ATX plug then do the same, hook these two together. If it is connected to the red, then hook it to the red wire. This wire must be connected to either an orange wire (+3.3V) or a red wire (+5V) for the power supply to function. When in doubt, try the lower voltage first (+3.3V). 👍👍
Marco Collignon thank you.
Marco Collignon oh my god after 6 hours I understand how to tern on.
Yes, smart, taking an old psu, full off noise...... seen the prices of computer psu's of seasonic these days.....such a one you can use only 200euro.....
Por el proyecto y la musica.... Me suscribo. Gracias por tu enseñanza!!
Power switch is reversed - 0 (zero) means off, 1 is on.
can we modify the psu to get center tapped? I need +12v ct -12v to powered an ocl power amplifier
use the blue wire for -12v (be aware the blue has considerably less amps though)
yellow wire for +12v, then the obvious black for 0/ground
Resitor for 5v for what use.?
Value of the ceramic resistor and watt?
Are you blind ? It says right in the video... Get your eyes checked.
Hi, thank you very much. Could you please advise the part number of the red and black screw terminals...maybe a weblink to purchase. Also for the on / off switch. I would really like to make this.
They are called binding post get them on amazon
You can even get them at Lowe's.
What about 12v 10 amp black/yellow ??
Thanx for video
7:20 you turned i OFF........
Видеото е много добро и поучително. Само не разбирам целта на 5омовия резистор?
Ты бухой это писал ?
@@konstantinskobelev2091 ты далёкий
@@konstantinskobelev2091 Он болгарин. И пишет на болгарском.
там у тебя на выходе есть вздутые конденсаторы.........
And does it matter where I put the load resistor? My 5 volt line runs at 25amps. Everything else runs at lower amps
Adam shinny77 no it not matters
i have 12v rail has 16 amp and -12v rail has 0.8 amp if i use 12v and -12 i get 24v but how many amps ??
Mohammed Riad Around 0.8A :)
tell me why you put a resistor on the 5 volt line
Read the comment above by RING NECK
For the suply to work right
Do you have a component listing / name and using a 110v instead of the 220v shown?
If you have a 110 supply and 110 mains voltage the only thing you would need to change might be the switch used to break the mains connection, but if it can handle 10A at 110v you should be fine.
0= off ... 1=on first switch ???
Why use 10 watt risister
So 5V across 5 ohms draws 1Amp. Amps x volts = watts. 5 volts x 1Amp = 5 watts. So I would use a 10W rated resistor to give a safety margin. Unless you fancy a very hot 5 watt resistor and a small house fire to explain 😬
Hi, please help.. The green light is on, the red goes on for less than 1sec and then off. No power output at the outputs... Load resistance 10watt 5.6 Ωhm
why if i cut the wires for shorter lenght at beginning the power suply no longer work even i connect green to black ?? help please
I had a headache before watching this video. The music in this video gave me another headache..
Try the speaker off button.
thx bro
can -12 V be connected to 0 V the result is 12 V ?
My Powersupply starts to hum when I have only 5V or 3.3V hooked up to something.
I do not have a Resistor, and dont need one since I never start it without some kind of load hooked up to it. When I connect a 12V Motor to 12V though it runs fine. When I connect that Motor to 5V it still runs fine but the powersupply generates a noticably internal huming sound.
Any idea what that might be?
Excessive current flows through motor and motors internal current causing the hum, try using a capacitor about 2200uf and 20volt and needs a parallel resistor whose resistance must be similar or lesser about -5% and wattage must be some high kw. Or use some flyback circuit.
@@aperson9375 Its not the motor, its the power supply that hums.
Question is if it is doing any damage. If not, then I really dont care.
@@peteraugust5295 Yes the hum can come from the power supply because of the inrush current that needs by the motor and also the ac current generated by the motor winding itself. Whenever you connect a motor with some pwm based power supply, there's a need to remove those current, otherwise can burn the ic that controls the psu voltage and phases, this is why computer dc fan were designed where coils were stable but magnets moves and direct connection are not done rather MOSFET based connection are done within the circuit.
You have to check how much current your motor draws using a clamp meter then needs a capacitor to filter out current properly and also needs some Zener diode and load resistor to remove the back fire current comes from the motor. Circuit are available on google you can find them.
@@aperson9375 thanks.
What is the 5 ohm 10W Resistor for? Thanks
@Popeye OK; thank you very much
This resistor is on SELV side (low voltage output side) and is due to the minimal load on 5V branch necessary to leave the main power stage on. Without load in 5V output the supply will not provide power on other outputs (3.3V, +-12V). Is necessary to consider the original purpose of this power supply - in computer. ATX source was not designed as laboratory power supply. Load on 5V branch is associated with booting sequence of motherboard (MB). Probably this is either protection in case of faulty MB, or an power saving option I dont know which, but one of them. Surely, this power resistor is NOT due to discharging big capacitor on primary side.
OK; thank you
Why this 5 ohms dummy load is necessary? I think is 1A running there, could be 50 ohms or even 100 ohms?
why a atx psu will not take 6amp load when its allready on
Can anyone help? I am using a 12v 1200ma plug in adaptor to power a 1s lipo Boldclash PO1 batt charger. It accepts input from 6-15 volts. For curiosity I metered the output of this wall charger and it reads 16.4 volts! Why so much higher than what it is labeled? I metered several others I found and they also read several volts more than labeled. No loads on any of them. Is it okay to use it? It appears hefty enough. Weighs a lot more than others and has larger guage plug wire.
You have fallen into a common trap. Unregulated power supplies can be several volts higher than what's on the label. When you put the power supply under load, the voltage will say to be roughly then rating on the label.
very cool! what is the BLUE -12V used for?
SOME PROJECTS MAY REQUIRE A -12 & A +12 WITH A GROUND WHERE THEY MEET. DEPENDS ON COMPONENTS AND CIRCUIT CONFIGURATION.
Op amps use a minus supply.
I have a resistanse of 10w to 1.8ohms.. Can I to use?? I see you use one 10w to 5ohms
no.. you can't use that.. you should use at least 5Ohm until 50Ohm..
الاخ حسن دبوه هل يوجد في بور الحاسب فاصل الشحن وشكرا
I know very little about this, can you tell me why you need all the cables and not just one of them? assuming you will use less than 100 W of power. what is the requirement to power security cameras on a distance of 50 meters? do I need thicker cables? do I need a more powerful power supply? what happen if I draw 400 W off a 500 W rated cheap power supply, is it safe or it will damage the power supply fast? Sorry for my English
THANKS
За музон который бьет по ушам палец в низ.
I have one serrious question for those who want to help me
I have atx akyga ak-b1-400 +3,3V 23A, +5V 25A, +12V 18A , -12V 0,5A +5V Sb 2,5A total power 400W. Which buck Amperage should i use and what value should be the fuse inside?
can i use load resistor 10ohm 20 watt
If I use 12V only, what will be the power consumption? Will it be same as using a PC?
hi, what is the use or purpose of a resistor paralleled between +5 and ground? thanks!!
Hi, the resistor provides minimum current consumption, some ATX PS needs this for working itself
Mas cara mendapatkan 12volt dengan Watt yg besar bagian kabel mna aja yg d kombinasikan?
@@father_made92 kabel kuning dan hitam jadi plus beban ke kabel kuning dan ground beban ke kabel item
what kind of resistance did you use?
Its on the schematic at the beginning of the video.
THANKS VERY GOOD EDUCATIONAL