I just came across your channel sir and I'd say its amazing. Please keep on making such amazing videos to educated all the people. The way you cover all the basics is really dn amazing. Saw some of your videos on EMI and RFI filters. Love from India sir.
most welcome and special thanks for your valuable comment you can also check my urdu channel, if you are interested to watch same videos in urdu language then you can visit haseeb electronics urdu ruclips.net/channel/UCLRRH_M_0oW1oLTuUOsDXdw
Hi thar Haseeb always enjoy your videos you always explain them very intelligently so I have questions about videos 629 afterwards do you still have the stand-by voltage on the green wire and can I use this wire for USB port to stay active when unit is shut down thank you.
Am trying to use atx as bench power supply, mainly for voltage injection into short circuits. Will removing short circuit protection will help but also making the current adjustable will also help
Thanks and welcome, it is my pleasure if you understand urdu / hindi then you can also check my urdu channel (haseeb electronics urdu) on that channel i share my videos in urdu language
Hi hasseb you are a very good profesor of electronics thanks for all.your videos and time . I want to ask some question i have a problem with a atx that only have a tl494 and it regulate the 3.3 v from a mosfet that take the 5 volt rail to get the3.3 output and when i take off the mosfet of the 3.3 volts all its good but when it get back the power suply get prtection this one dont have a 339 or any other compararor only the 494 sorry for the long qestion hahah if you can i can email the schematics and some.pics thanks so much
Üstad yaptığın bu iyi niyetin den dolayı inşallah bu dünyada ve ahirette de kazananlardan olursun. İnşallah .Rabbim seni mükafatlandırsın. Çünkü iyi insan çok az kaldı.
selamun aleykum. Sevgili kardeşim. değerli mesajınız için minnettarım. Bilgilerimi paylaşmak benim için bir zevk ve benim için yapılan yorumları ve duaları gördüğümde beni mutlu ediyor. Allah korusun
Hello dear professor... Great time happily.. I had a question, if in this case one of the outputs, for example 12 or 5 volts, is momentarily shorted, is it dangerous for the power supply? Is it possible to burn the transistor?
Salam M Haseeb, very interesting to discover the PIN 4 of the ic. Can you please explain how the comparator works as sometimes i experienced a PSU shut down after some spark appear under load but far away from max watts. Thanks.
Thank, our Haseeb Kindly do video on how the both comparator 324 and tl494 work to control. Always wonder, your wonderful excited experience in electronics & electric things, very indept with deeper, straight and strictly business - explanation Thank you a lot
@@HaseebElectronics i did the hack "jumper for pin 4 to GND", it works perfectly, BUT, i remembered that its canceled the short production circuit, i did remove the jumper and tried to short the 5V to GND by thiny wire 0.1mm the protection circuit worked again, as i expected. then i short the 12V to GND directly, the ac 220V mine power 4A fuse has plowed, i changed it with 250v/5A one its keeps plowing, just when plugging ac mine power to the power supply !?, "no ic no smoke" can you suggest what happened !? by the way, i am an electrician and i know that AC220V very DANGEROUS!
Some ATX power supply with IC KA7500 with setting around 14.5V as the trigger point for overvoltage protection. With modification of the connection of pin 1 (i.e. non-inverting input of error amplifier 1) to 12V potentiometer, it can adjust voltage level of 12V, but it can't over 14.5V or shutdown. Apart form disabling the overvoltage protection, could it only modify the trigger voltage of overvoltage protection?
al slam alykom haseeb , I want to ask what is the use of the 2 watt resistors connected at outputs , one connected between 12 and ground , one between 5 and ground and one between 3.3 and ground , should I remove them after hacking voltage output or leave them ?
I disconnected pin 1 from circuit and connected it to ground to get the highest voltage (26.5V) and also changed all the output capacitors to 50V capacitors is there something to be done with the power resistors i mentioned before ?
Hello friend, how are you? Could you help me with the IC HS8108 of a power supply. I'm using it for a DVR with 7 cameras. But the power supply goes off. How can I disable the amperage limit so I can use it without problems. I thank you very much for your answer, you would get me out of trouble.
I have an older PC power supply but don't have green wire . I conected pin4 to GND and don't turn on. Can You help me? This power supply have tl494 and Lm339
Great video, good job Sir. ;-) Very usefull. I have two ATX power suplies with the same problem. It goes off when I conect any load on 12V. Can you tell me where can I find the issue to solve this problem?? Thanx.
Respected sir, please tell me about these pin numbers remote,sense 3.3-5-12-volt of ic ps224u and ic tms1002ds .kindly reply me very soon. Thank.Sir please give me reply..
Liga ela a uma bateria vais ver que ela sobe muito bem a amparagem sem a bateria vais dar cabo sempre do transistor D13007L se calhar vais ter que por um em paralelo...a minha conectada a uma bateria de um berbequim 12V com 7volts carga a bateria fraca consegue manter 6 lampadas 12 volts 50w cada em paralelo cada lampada e quaze 5 AMPERS total 300w sem modificação alguma com uma fonte ATX UNICA 450W...agora imagina se a bateria do berbequim tava totalmente caregada quantas lampadas iria manter asezas de 12v 50w umas 8 ou mais 8 dava 400w quaze 40 AMPERES...como é obvio...com uma extensão de 1metro e 80cm 2.5mm fio de cobre estanhado cada da fonte para a bateria...
good afternoon friend greetings from mexico and hopefully you would make a video how to hack sources that use another integrated like sgh some do not use tl494
Resp Sir! Excellent Video Sir. Sir Dell Optiplex 3020, 180Watt 6&4Pin SMPS PS On 5V Ok Sir, but 12V Directed Pass on Sir. Green & Black Connected after PG 5V Paased Sir, only 12V was Directed Sir and Series Lamp was on off on off Continued Sir, New Fets was chaned Sir and near 12V to 12V small Bulb was Connected this Glowing on off on off, Which Problem Sir. Please Advise Sir. -- ChinnaRao, Paderu, Visakhapatnam Dist, Andhra Pradesh.
Funciona 100% en el tl494, si alguien no entiende el vídeo tiene que puentear el pin 4 del tl494 a tierra busque el diagrama de los pines y miren cuál es el pin 4
@@HaseebElectronics thanks sir actually i have a 1kva online ups whose mains igbt is short the two output igbts are ok when checked with multimeter diode mode but when i turn on the system boost voltage is produced some 900 v 450. On both the capacitors and when i chk in ac setting with multimeter the output is some 300v ac but as the output relay is about to trip it shows overload and the system shuts down i have doubt on the two output igbts how can i check them by giving voltage
Many thanks from Nigeria
Always in-depth, analysis, productive
Thank you thankfully
You are very welcome
تحياتي لكم كنت محتاج هذا الفيديو كثيرا بارك الله بكم اخوكم ابومروة من العراق
جزاك الله خيرا استاذي الفاضل حسيب على معلوماتك القيمة وجعله في ميزان حسناتكم استاذنا.
اللہ یسلمک و یسعدک و یبارک فی عمرک
اخوکم محمد اشرف
I just came across your channel sir and I'd say its amazing. Please keep on making such amazing videos to educated all the people. The way you cover all the basics is really dn amazing. Saw some of your videos on EMI and RFI filters. Love from India sir.
most welcome and special thanks for your valuable comment
you can also check my urdu channel, if you are interested to watch same videos in urdu language
then you can visit
haseeb electronics urdu
ruclips.net/channel/UCLRRH_M_0oW1oLTuUOsDXdw
After viewing this video I successfully did alteration in my ATX supply. Jazak ALLAH
ma shaa Allah
but why did the 12V drop to 11V when u connect the load 7:37 is that normal ?
pls reply
Masha Allah, amazing Tutorial
Big Like from London. 👍 🇬🇧
thanks a lot dear brother
Walaikum assalam Wowwwv useful video nice sharing🥰 super explaining nice 👍sharing
As I always say, you are the best of the best sir", lot's of love from India 🧡
thanks a lot dear
Very good and useful information sir thanks for sharing this knowledge to us
Most welcome
Hi thar Haseeb always enjoy your videos you always explain them very intelligently so I have questions about videos 629 afterwards do you still have the stand-by voltage on the green wire and can I use this wire for USB port to stay active when unit is shut down thank you.
Very thanks from Perú.
Very useful information on dead time controller. much appreciated
thanks a lot
this pin 4 in TL494 or ka7500 is dead-time controller to adjust dead-time
if this pin Is pulled up, it works aa shutdown in this ic
excellent explanation
You're excellent on teaching electronics my dear friend. BRAVO! Thank you very much !
best regards and special thanks
You are wonderful, Ustad...
it is my pleasure
Allah Senden razı olsun Ustam 🤲🏻
Am trying to use atx as bench power supply, mainly for voltage injection into short circuits. Will removing short circuit protection will help but also making the current adjustable will also help
سلام استاد. درس های شما خیلی سودمند خواهد داشت 🤗
خیلی ممنون برادر عزیز
Very nice informative vlog ❤️
thanks a lot
Thank you.. Sir...
Your my Best.. I'm in Srilanka.. I'm very much like to watch your videos.. 👍👍👍
Thanks and welcome, it is my pleasure
if you understand urdu / hindi then you can also check my urdu channel (haseeb electronics urdu)
on that channel i share my videos in urdu language
Hi hasseb you are a very good profesor of electronics thanks for all.your videos and time . I want to ask some question i have a problem with a atx that only have a tl494 and it regulate the 3.3 v from a mosfet that take the 5 volt rail to get the3.3 output and when i take off the mosfet of the 3.3 volts all its good but when it get back the power suply get prtection this one dont have a 339 or any other compararor only the 494 sorry for the long qestion hahah if you can i can email the schematics and some.pics thanks so much
Your are the best Sir👏👏🙏
best regards and special thanks
Wonderful video dear friend, have a happy day!
Many thanks
Allah bless all your effort brother, thanks a lot.
You are most welcome
like wow so great superb informative video all the best vlogs
Thank you so much 🙂
Πολύ ωραίο φίλε μου
buen video y especifico. yo tengo una fuente y quisiera hacerle eso pero el ic es sd109 que podria hacer en este caso
Üstad yaptığın bu iyi niyetin den dolayı inşallah bu dünyada ve ahirette de kazananlardan olursun. İnşallah .Rabbim seni mükafatlandırsın. Çünkü iyi insan çok az kaldı.
selamun aleykum. Sevgili kardeşim. değerli mesajınız için minnettarım. Bilgilerimi paylaşmak benim için bir zevk ve benim için yapılan yorumları ve duaları gördüğümde beni mutlu ediyor. Allah korusun
Hello dear professor...
Great time happily..
I had a question, if in this case one of the outputs, for example 12 or 5 volts, is momentarily shorted, is it dangerous for the power supply? Is it possible to burn the transistor?
Thank you for your explanation
You are welcome
Good explanation, congratulatios
best regards
Very useful information.
Thank you very much 🙏
Good night.
thanks a lot dear
hi sir very informative but why it is happened in normal mode shutdown the supply and protect?
Hola !! Vengo a dejar mi agradecimiento, funciono a la perfeccion, Incluso logre sacarle los 30 AMPERES !!! Saludos desde mexico
Very helpful 👍👍👍👍👍👍👍👍
it is my pleasure
Salaam janab Bhai Saab Have Aa Nice Day
shukriya piarey bhai
Great video, good job Sir. One question - We connect pin 4 fromTL494 to specific ground pin or not?
good morning dear
we can connect pin 4 to any point in secondary side ground (black wire)
@@HaseebElectronics Thank you very much Sir for your advice. You help me a lot. You are the best.
Salam M Haseeb, very interesting to discover the PIN 4 of the ic. Can you please explain how the comparator works as sometimes i experienced a PSU shut down after some spark appear under load but far away from max watts. Thanks.
Thank, our Haseeb
Kindly do video on how the both comparator 324 and tl494 work to control.
Always wonder, your wonderful excited experience in electronics & electric things, very indept with deeper, straight and strictly business - explanation
Thank you a lot
Works great! Thank you
You're welcome!
Dear brother can you explain how the ic LM339 work as supervisor for circuit best regards
It work very helpful thanks
Very good information sir
Thanks and welcome
i love you, you just saved my from getting mad.
wish you best of luck
stay blessed
@@HaseebElectronics
i did the hack "jumper for pin 4 to GND", it works perfectly,
BUT, i remembered that its canceled the short production circuit, i did remove the jumper and tried to short the 5V to GND by thiny wire 0.1mm the protection circuit worked again, as i expected.
then i short the 12V to GND directly, the ac 220V mine power 4A fuse has plowed, i changed it with 250v/5A one its keeps plowing, just when plugging ac mine power to the power supply !?, "no ic no smoke"
can you suggest what happened !?
by the way, i am an electrician and i know that AC220V very DANGEROUS!
Some ATX power supply with IC KA7500 with setting around 14.5V as the trigger point for overvoltage protection. With modification of the connection of pin 1 (i.e. non-inverting input of error amplifier 1) to 12V potentiometer, it can adjust voltage level of 12V, but it can't over 14.5V or shutdown. Apart form disabling the overvoltage protection, could it only modify the trigger voltage of overvoltage protection?
al slam alykom haseeb , I want to ask what is the use of the 2 watt resistors connected at outputs , one connected between 12 and ground , one between 5 and ground and one between 3.3 and ground , should I remove them after hacking voltage output or leave them ?
I disconnected pin 1 from circuit and connected it to ground to get the highest voltage (26.5V) and also changed all the output capacitors to 50V capacitors is there something to be done with the power resistors i mentioned before ?
these are bleeder resistors and provide dummy load to get stable output
yes
power resistors are you be changed
otherwise these will heatup
@@HaseebElectronics should I change all of them to higher watts and value or change certain one would do the job ?
watching now sir and thumbs up done
i am thankful
That was very helpful. Thank you ! :)
You're welcome!
You are great 👍
Good 👍👋👋
it is my pleasure
Hello friend, how are you? Could you help me with the IC HS8108 of a power supply. I'm using it for a DVR with 7 cameras. But the power supply goes off. How can I disable the amperage limit so I can use it without problems. I thank you very much for your answer, you would get me out of trouble.
Saludos bro desde Guatemala excelentes tus videos! Me gustaria saber como se le quita la proteccion al CM6800AG!!
hi,sir it's working to make a short killer ? i need to make one to looking for laptop short circuit.
Good Work My Friend!🙂
special thanks, best regards
@@HaseebElectronics Your Welcome Buddy!🙂
Sir since the voltage and current protection is bypass, what is now the max current the atx power supply can deliver?
Thank you
You're welcome
Sir, What if Single IC 7520 IC is present
Can i used my stk 4141 power supply 12012 v means +12v and -12v please send your suggestions
Usefull video👌👌
best regards
Weldon keep sharing experience great job done
Thanks a lot
I have an older PC power supply but don't have green wire . I conected pin4 to GND and don't turn on. Can You help me?
This power supply have tl494 and Lm339
same, did you find any solution?
Interesting video!
special thanks dear friend
Great video, good job Sir. ;-) Very usefull. I have two ATX power suplies with the same problem. It goes off when I conect any load on 12V. Can you tell me where can I find the issue to solve this problem?? Thanx.
please check video number 634
that is for protection circuit
you didn't mentioned the ic numbers, being used in your power supply
Yes, I forgot mentioned. Sorry. The IC is AZ7500BP and AS339P.
I have lm393n and Wt7515 what I have to do to bypass this protection circuit
I have been waiting for this hack . wonderful, u r doing fantastic job. thanks
It's my pleasure
this is the part of this series
its next parts are coming soon
best wishes from Muhammad Ashraf to Muhammad Ashraf
Sir can we check npn transistor by giving 5 vdc on base of transistor
Will it give continuity emitter to collector?
Sir, if we modify this (atx)circuit as a variable power supply can we adjust the output voltage 1v , 2v like this . Is it possible?
yes we can modify it
this video was the first part of this modification series
in next video we will modify it
@@HaseebElectronics sir" I'm waiting for your next video,,☘️
@@HaseebElectronics thanks sir 🙏🌹❤
Respected sir, please tell me about these pin numbers remote,sense 3.3-5-12-volt of ic ps224u and ic tms1002ds .kindly reply me very soon. Thank.Sir please give me reply..
Does it work with sdc2921 ic?
really sir you are doing great job
thanks a lot Raj bhai
You really know wtf you're doing, grats ^_^
🆎🕉️🕉️GOOD TEACHING FOR YOUR CHANNEL🚦THANK YOU SO MUCH VERY VERY GOOD 👌👌👌👌👍👍👍👍💃💃💃💃
Thanks and welcome
In my power supply the ic is WT7510 does it a protection?
And how can i disable it?
wow very well explained
thanks a lot
My power computer has only one IC,,!! So how should I do this on it?!!
Only single IC
very thank to yo i ned it شكرا جزيلا انا من العراق
Hi sir
I have a power supply with ic wt7522 how can I bypass protection please.
YOU ARE BEST
thanks a lot dear
24v ya 48v kar sakte he ton laga ke.
yes we will make
ye is series ka pehla part tha. is k baad video aur bhi aaein gi
good job sir
best regards and special thanks
I tried this with my atx psu with the 5700 chip but the psu won't turn on. Any suggestions?
salam..
which country you are..
wa alaikum salaam brother
I am from Pakistan
Liga ela a uma bateria vais ver que ela sobe muito bem a amparagem sem a bateria vais dar cabo sempre do transistor D13007L se calhar vais ter que por um em paralelo...a minha conectada a uma bateria de um berbequim 12V com 7volts carga a bateria fraca consegue manter 6 lampadas 12 volts 50w cada em paralelo cada lampada e quaze 5 AMPERS total 300w sem modificação alguma com uma fonte ATX UNICA 450W...agora imagina se a bateria do berbequim tava totalmente caregada quantas lampadas iria manter asezas de 12v 50w umas 8 ou mais 8 dava 400w quaze 40 AMPERES...como é obvio...com uma extensão de 1metro e 80cm 2.5mm fio de cobre estanhado cada da fonte para a bateria...
I grounded pin4 tl494 but shout down again when i loaded 5 amp or more suddenly
Bhai Tsm111cn ic smps ki over current protection ko kese khatam karian.
sir water motor say power supply bar bar trip ho jati hay, will same solution work?
can you show us how to make this chamber so close ... please ??????
sure i will try my best
good afternoon friend greetings from mexico and hopefully you would make a video how to hack sources that use another integrated like sgh some do not use tl494
Resp Sir! Excellent Video Sir. Sir Dell Optiplex 3020, 180Watt 6&4Pin SMPS PS On 5V Ok Sir, but 12V Directed Pass on Sir. Green & Black Connected after PG 5V Paased Sir, only 12V was Directed Sir and Series Lamp was on off on off Continued Sir, New Fets was chaned Sir and near 12V to 12V small Bulb was Connected this Glowing on off on off, Which Problem Sir. Please Advise Sir. -- ChinnaRao, Paderu, Visakhapatnam Dist, Andhra Pradesh.
Thanks for sharing
My pleasure
Sir please.ATX smps(SC 6105 B)IC ki protection pe video bana dein please!!!
Teria como subir a tensão para 14 volts?
My ATX has only one IC HS8108B A5FTB. How do i bypass it
Funciona 100% en el tl494, si alguien no entiende el vídeo tiene que puentear el pin 4 del tl494 a tierra busque el diagrama de los pines y miren cuál es el pin 4
Excellent
Thank you so much 😀
Sir ji aap car ka electronics per video kab banaiyega please tell me and humble request kar raha hu aapse please make it
bhai
i am trying to arrange it. as soon as i get it
i will explain
after this when i connected load a massive sound comming from transfor mer and after 5 secund my power suply fause blow up
Plz make videos on online ups 36v 72v etc
i will arrange, if i find it, i will share
because here in Jordan No ups, No solar, no VFDs
@@HaseebElectronics thanks sir actually i have a 1kva online ups whose mains igbt is short the two output igbts are ok when checked with multimeter diode mode but when i turn on the system boost voltage is produced some 900 v 450. On both the capacitors and when i chk in ac setting with multimeter the output is some 300v ac but as the output relay is about to trip it shows overload and the system shuts down i have doubt on the two output igbts how can i check them by giving voltage
Sir please rewind the transformer and make 0-24v 0-10A