DIY MINI 12V 10A SMPS WITH UC3843
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- เผยแพร่เมื่อ 2 ต.ค. 2024
- Hello guys, KD here. Today i have made a very powerful but also very compact 12V 10A smps with the popular UC3843 ic. The output voltage of this power supply is adjustable and you can also modify the output voltage of this smps to any required voltage. I have use ETD34 trabsformer with an air gap of 0.8MM. The air gap is very important !. If you want to use this power supply at high current then use a big heatsink and don't forgot to isolate the mosfet and the diode. The isolation distance between the primary and secondary is 7mm which is very safe
THANKS FOR WATCHING. HAVE A NICE DAY :)
COMPONENTS LIST
1 X 330R
1 X 330K
1 X 2.2K
1 X 560R
2 X 4.7K
2 X 10R
3 X 10K
1 X 0.22R 1W
1 X 100K 1W
2 X 2.2NF CAPACITOR
2 X 1NF
3 X 100NF
1 X 47UF/50V
1 X 120UF/400V
1 X 100NF/275VAC
1 X FR107 DIODE
1 X RL207
1 X STPS2045
1 X KBP307
1 X PC817
1 X TL431
1 X ETD35 TRANSFORMER
1 X 10N60 MOSFET
1 X EMI FILTER
1 X 10D-9
TRANSFORMER DETAILS
PRIMARY- 37 TURNS 1 X 0.45MM COPPER WIRE
SECONDARY- 4 TURNS 10 X 0.45MM
AUXILIARY- 6 TURNS 1 X 0.45MM
AIR GAP- 0.8MM
PCB LAYOUT AND SCHEMATIC
drive.google.c...
MESSAGE ME ON FACEBOOK FOR MORE DETAILS
Bro I'm a new big fan of yours, and you and me also a fan of homemade102(Awsome tech) 🥰🥰🥰
Thanks bro 😃😊
Same too me
Can't you please explain the calculations how you choose ic and transformer windings to get the target oa 12v 10a. If one wants to change the voltage and current what should he do? Incomplete projects are of no use.
I need 24v 5 A, what changes in number of turns for the transformer. Please reply.
Sir, will it work from 90v to 265v input? Please reply.
Yes 😎👍
Can you upload video with testing on 100v.
Why 0.8 mm gap required and how to calculate air gap
Air gap is required in flyback topology. It is calculated by the parameters of transformer, working frequency etc
hello. i have an ee35 transformer. can i build this circuit using ee35 transformer? i will follow the winding pattern from your other video:
TRANSFORMER DETAILS:
PRIMARY - 37 TURNS
SECONDARY - 4 TURNS (3V PER TURN)
AUXILIARY - 6 TURNS
AIR GAP - 0.8M
ALL WIRES - 0.4MM
th-cam.com/video/B86aZGCvmAA/w-d-xo.html
sir in my case input DC voltage 650 voltage I use 60n100 igbt please help snubber circuit calculation
Ok bro I’ll try
@@kdcreativity6201 thank for reply ok I'm waiting for you
can i use smaller magnet wire on secondary like 0.3 20 pcs
Yea
Hi
I make this circuit , but every time ic and mosfet has exploded , 5 time
I made the transformer according to the video
Core EI33
Even i added 15 volts zener in line auxilary
Your videos are excellent for learning and practical purposes, mainly you provide full data for your videos including PCB layout, circuit, and required components.
Thanks 😊
@@kdcreativity6201 Ban cho mình Xin thong so bien ap nhé.. ..?! Cuon day diot 207 bao nhieu vong dây và dây bao nhieu mm cuon diot 107 bao nhieu vong (tum) dây may mm và cuon đâu ra MBR20100CL bao nhieu vong (tum) đây bao nhieu mm .rất mong được ban trả loi , cam ơn nhieu nhé ❤
Very good project and super realisation. Your SMPS test with 10A current is impressive. Thanks for your work and share schematic and pcb design.
Muy completa la descripcion y el video, pcb y esquema.. Gracias sr
Could you provide the project file ( Easyeda)?, Pls
And people on KiCAD discord channel keep preventing me from building one 😂
Hello,
By using different core in place of ETD such as EI, EE does the number of turns of primary and secondary WINDING change?
If change How to calculate the no. Of turns of transformer ?
And RCD snubber calculations?
Thank You
Yes if you change the core size then you have to recalculate it’s winding data. You don’t have to change the rcd snubber, it will work fine
@@kdcreativity6201 Thanks
Sir, did you test in lower voltages like 100 or 95v input is it giving same output & same amps?
can u share the schematic & pcb source files I really like the work u are putting in SMPS
Yea. I have given the schematic and the pcb layout in the video description
Nice video sir/ bro..
But do some explanation about components you used.
And I am afraid of using this smps on 10A max..
Will it be safe???
Ok bro thanks for your feedback. Yes you can use this at 10A but I will prefer you to use it at 8A because you should not use a psu at it’s full power rating
Sir please making a ±voltage smps circuit using half bridge configuration
Ok 👍🏻
Good videos i have seen of your max videos , can you make isolated dc dc conver one videos on the same upto 250watt
Yes I will try
Nice work...sir please make a video about hi frequency transform winding with indicator perameters masermant.
Ya soon I’ll make one
Please can you write how many turns you are putting on the transformer!? Primary winding how many turns? Secondary winding? And so on...
Ok bro. Please check the description
@@kdcreativity6201 It's cool! Thank you very much! Your channel is very interesting! It makes sense! + you give circuits and PCBs! I repeated several of your projects, everything works perfectly! Thank you for your work! Very professional videos you shoot! Good luck! We are always looking forward to your new videos! Best wishes!
@@evgeniylazurenko thank you very much bro for your support. 😄😃😄😃
Hello friend, your project is very good, I would like to output 30V, I would be very grateful, thank you, excellent friend.
Thanks. For 30V output, change the 2.2k feedback resistor to 680ohms and change the secondary winding to 10 turns
Thank you very much for your answer, I will try it. thank you
I need to build 24v, what changes need to be done?
Apa Ada yang udah bikin terus berhasil tanpa problem?
Soalnya saya bikin tidak berhasil
Output tidak keluar
Hi there I'm a fan of your DIYs. Is it possible to increase the voltage to 19v (~5Amps)? Changing the transformer windings would be enough?
Yes 👍🏻
Sir ye supply minimum ketny volt se on hote ha mujy dc25 volt se 220volt input wale supply chay output 12 volt he hun
¿Qué modelo de filtro EMI pones?
All other smps there is a coupling capacitor between earth and -ve of the output. In this circuit no such capasitor included. Why?.
I have added the secondary transformer winding but the output does not increase, please help me
Did you change the feedback resistor ?
no, what should be changed to vr 1k?
Change the 2.2k resistor to 1k and don’t forget to use a high voltage capacitor
@@kdcreativity6201 thank you very much I want to change it to 24v 30a is that possible? i use irfp460 mosfet and 80a 200v diode in your circuit. is there a current limiter in your circuit. i will thicken the high current path in the circuit
It’s a flyback topology power supply so the power is limited between 150-180W max !
15 ampare 12v 14/5 volt is ka PCB designing setkat smps farmer Ki walding hum KO bana Kar Dy sakty ho
th-cam.com/video/B86aZGCvmAA/w-d-xo.html
This smps can easily give 12v 12a and the pcb files are in the video description
UC3843AN Can we switch this ic to this? 555 There's no such thing as UC3843AN. 🤒
555 ic is totally different. You can’t use this. UC3843 is very popular ic, please search properly
nice
how can increase 10A to 20A ?
Flyback power supply are limited to 150W
Rstart resistor 330k heat🔥 problem
How to solve ?
Use 2W resistor and use a high quality 47uf capacitor
i try but not working and why you ground feedback?
Please message me on messenger
Hi sir, we need some circuit for12V/2A low cost application
Please let me transformer size
Primary winding and inductions
And secondary winding details.
Use EE25 for 12v 2a
Thank you sir , winding details please
Please let me sir
@@senthilka2260 please message me on messenger
Great video, can this circuit work with 40-60V DC , because i don't need to convert it from AC in my project.
Please watch my latest video about buck converter
@@kdcreativity6201 Thank you for suggestion, but my circuit kinda needs the isolation transformer this smps provides
Hello, greetings from Spain, first congratulations for your channel...
I have a question, could I use the UC3842 in this circuit? I have several recycled old TV smps. I think it has few differences with the UC3843.
Yes you can use UC3842 also
@@kdcreativity6201
Ok, thank you very much for answering. Regards.
You can search from Google through terminology like IC UC3843 pinout and then again search IC UC3845 pinout and then compare, check if both has same pinout.
Please you should select the size and winding details sir.
Good morning ji ,what is primary winding inductance please let me.
Sir What is the price of UC3843 I.C in the local market?
₹15-₹30
@@kdcreativity6201 ok
Hi why do you use a third winding what was the reason? And what controls the output voltage how to give reference output voltage as 48V and 1A ?
The third winding is used to power the ic. There is a feedback system to control the output voltage. For 48V output, you have to change some resistors and capacitors
@@kdcreativity6201 which one to be specifix ?
Message me on messenger
@@kdcreativity6201 From where ?
Can I use EI 35 core in place of EE35 core because I have EI35 core please tell me..
Ya sure
How can I add LED to show if it is connected to load..The LED show come on whenever it sense load connected.
You have to add a shut resistor combined with a comparator circuit at the output to sense the current flowing and add a led to the output
Please tell me bro I working on this project
What help do you need ?
very good project ct sir , where do we get emi filter
You can get it from old circuit
How many frequencies
What will be changes if I want 24 Volt 5 Amp. except electrolytic caps and secondary binding?
Change the 2.2k feedback resistor to 1k
@@kdcreativity6201 What about the 48 V 1 A and what is the formula ?
Can you show schematic of cjrcuit?
@@geartech3860 , Yes, I can. Pls share your email.
Multimeter could not read above 10 amp as written on it, so is it real or fake😮
Same load may amp kaise barana or gatana jayega use a another preset .
Thanks a lot. If I want to modify it 48V DC to 12V DC the primary, secondary and auxiliary how many turns to make me? Waiting for your reply.
12 turns for 48v and 3turns for 12v
Can I use any type or color of 2.2nf capacitor instead of the blue one you used?
You can use any but make sure to use at least 1kv capacitor in the snubber circuit
@@kdcreativity6201 pls, are you sure you use 330k to start the ic, because I can't see it clearly, and I have watched the video more than 5 times just to recognize the color code of the 330k but I couldn't
Yes bro its 330k
what is the inductance of the transformer
I didn’t remember the inductance.
I am working on a similar design and currently doing the PCB layout. What trace width do you recommend for the AC vs DC traces for 1 or 2 oz/ft2 Cu?
Sir aap iska component and diagram provide kar sakte hai
So helpful video. but a request is add more detail in schamatic pdf file& it will help us when we will make.
however, Thanks
Thanks bro. Please let me know what type of details I need to add.
@@kdcreativity6201 as like component list
@@sagorrana2051 I’ve given it in the description ☺️
@@kdcreativity6201 has This smps over current protection?
Yes
bhai hme stps2045 nhi mil rha he uski jghah mbr20100 lgha skte he kya
Ya sure
Same circuit and transformer only changes please let me sir.
Transformer size ?
Please you should select and let me sir.
hello
how to make it work with 120v network
You have to recalculate the transformer windings.
R7 resistor must be Ground rather than connecting to shunt.
Sar aap Bina PCB ke 12 volt 5 ampere adaptor banaaiye Hamen PCB Mein samajh Nahin Aata Hai
I can’t make it without pcb. I have given the schematic in the video description. You can understand the circuit from there.
Thank you sir aap ne reply diya
Brother,the circuit is easy I just put it together ,all the components are new.I nenergize it and firts of all I extract the ntc termistor , the ic 3843 and also take the mosfet.
Yes but wind the transformer properly
Great work. Can you also share the source files with us?
Bro kya gajab ka smps hai, bhai mene banaya ye to iska short circuit ampere 35 amps tak pahunch gaya .
Head's off mann😍😍
Thank you very much brother 😄😄
U r most welcome broo
Sir, yeh project hamare liye bahut importent hai,so aap iska circiut diagram dedete toh hum per bahut Ahsan hoga 🙏
Can you please share circuit diagram along with the component value.
Please check the video description
what is the cost of ready SMPS. I what to purchace it.
Hı, I have a similar project homework. My project homework is: Using UC3842 IC, to make a circuit with AC 220v input and 5V 2A output. Can you send me the diagram of this circuit, the circuit elements and the number of turns of the transformer, the thickness of the cable? I would be very grateful if you could help me. Best regards, have a nice day.
very good bro nice design very compact
Mppt 60amp
Transformer kha se arrange kiya
What are the board sizes?
What is the efficiency of the power supply?
That's quite efficient and doing well under 10A, what more can you ask for. 12V 10A that's 120W of power supply
Most of the market power supply can only do 3-4Amps max
Pls I need 5v 10a smps power supply using uc3842
Just change the number of turns on the secondary and the feedback resistor. You’ll easily get 5V 10A
@@kdcreativity6201 Pls I don't know the feedback resistor value and number of turns to wind..I will appreciate if you help to indicate on the schematic diagram
Please message me on messenger
@@kdcreativity6201 I don't hv your WhatsApp number
@@adeshinaajibola5114 Facebook*
How to gate this core
From old atx power supply
Good video
Thanks 😊
Sir 12v 2apm and 12v 5 amp pcb chahiye
You can use the same pcb for both 2A and 5A without any changes
hello where can i get the transformer
You can salvage it from old atx power supply
Is there a transformer winding detail video?
I’ll make one soon
What is the difference to using a Transformer with an 12V output, followed by a bridge rectifier and some capacitors to stabilize the dc output?
This circuit has stable output voltage. The output voltage can be changed. It can deliver 120W of power even after being small. Low noise at the output. Very cheap.
@@kdcreativity6201ah thanks :)
Smps are more noisy actually but good because very high efficiency so cheaper or more powerful. Also a supply with transformer bridge and cap also would typically be paired with a linear regulator for very low noise low efficiency@@FXArts
if the output is made 5V for cellphone charging, how many turns for the transformer?
2 turns are enough
@@kdcreativity6201 ok i want to ask again. for the mosfet will it be hot if it is no load?
if the primary winding is 85 turns, how much for the secondary winding at 12V?
is there a formula to calculate it?
@@dinaaaa_ what’s your transformer size ?
@@kdcreativity6201 Just like in the video ETD 35
Then no need to change the primary and auxiliary, just change the secondary winding to 1 turn and change the feedback resistor
How many turns of EI35 transformer? Please replay
Same
voltage is fluctuating , is it noise proof?
It's really works bro 🥰🥰🥰I'm very happy to made that circuit
Keep it up broo
Thanks 😊 👍🏻
Bro, thank you very much your good work and contributions to our electronics life,
I have just finished the project now, and have tested it and it working fine but the output drops on load which is not up to 1amp
Pls what could be the problem?
How much the voltage drops??
@@kdcreativity6201 from 12.6v to 9.8v
Can you please message me on messenger so that i can ask some images of the circuit
@@kdcreativity6201 yes, if possible, what's app
Note that my input ground is not connected with output ground, I don't know whether that is the course
Not working
😂
Thanks for sharing
Welcome bro 🤭😄
hello how can i make the output voltage 5V
What is the spec for emi filter?
I have watched all your videos, they are very knowledgeable, they help me a lot, but I have a problem in the snubber circuit andf transformer winding , please send me your mail id so that I can communicate with you.
Thanks, my email kdcreativity494@gmail.com
@@kdcreativity6201 thanku so much KD
Please bhaj request ha ap sy
Yes
What is the primary inductance of transformer? Please, please since iam struck up with transformer design.
You don't need any inductance to wind a transformer....just simple use transformer calculator software
And if you don't want to use any software just jo as it is in the video there will be no changes and effect in the output hence no need to worry about inductance of transformer
please upload PCB edit File
Frequncy..??
90khz
@@kdcreativity6201 thank's bro..
very helpful
The quality of the PDF you provided is low quality
Yes I’ll try to fix it from the next time
Sir aap ka no milega
You can contact me on messenger
Ic 3843 can t handle much voltage
The ic has a auxiliary power supply of 18v
Aoa nice sir ismain vairible resistance ki value kia hai kindly bataye aur out caps ki uf aur volt yeh bhi bataye list main yeh cheezain mention nahi ki apney ThQ Jazzak Allah
Value of variable resistor is 1k and output capacitor are 1000uf 25v
@@kdcreativity6201 kz thQ but sir chopper etd34 mill raha hai kaam karey ga aur wire 0.45mm bataya kindly yeh bataye k swg gauge kia huga wire ka ThQ
bro aghr hme voltage incrige krne hoto kese kre
You have to increase the secondary turns and change the feedback resistor
Feedback resistor konsi
@@pankajsankhala6172 2.2K resistor to 1k
@@kdcreativity6201 thankyou bro
330 ohm...ka current sense resistor Galt hai....1k...ka lagao
330ohm also works
Fantastic smps 😊😊😊😊