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.
Your videos are excellent for learning and practical purposes, mainly you provide full data for your videos including PCB layout, circuit, and required components.
@@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 ❤
please suggest a design for dual rail o/p of ±15v or ±18v for my audio opamps, just winding center tap, opto on + supply & reversing one schottky & capacitor enough.
Why the ferrite core EE33 giving me the noise when I put it in the SMPs power supply I m making 12v 2A and 5v 2A output separately ground SMPs power supply
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
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
@@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
@@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!
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?
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.
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
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.
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.
@@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?
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
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.
@@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
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
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
Hi sir, we need some circuit for12V/2A low cost application Please let me transformer size Primary winding and inductions And secondary winding details.
OPRETING FREQUANCY KITNA HAI EY BHI JARUR DIKHAYA KAREN ,AAPNE .5MM KA WIRE USE KIYA HAI JO MAXIMUM 85KHZ TAK CARRY KAR SAKTA HAI ISILIY MAIN OPRETING FREQUANCY KE BARE ME PUCH RAHA HUN, BAISE EY BAT RT CT VALUE SE BHI JAN SKTE HAIN ,BAKI SAB 👌
@@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
@@kdcreativity6201 okay but the output will be isolated outputs. Half of the primary winding will be the last winding . Also the number of layers tape does it matters ?
@@kdcreativity6201 thank you, another questions for 2 isolated outputs are these. 1. Is the starting point the same for the windings? 2. First I will have to winding half of the primary winding and isolated it with 2layers follow by the First secondary winding and isolated it with 2layes follow by the 2nd secondary winding and isolated it with 2layers then finally the complete of the primary winding with 3layers tape? 3. As a flyback should I use 0.8mm or 1mm air gap? 4. All windings are clockwise?
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 project and super realisation. Your SMPS test with 10A current is impressive. Thanks for your work and share schematic and pcb design.
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.
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
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
I need 24v 5 A, what changes in number of turns for the transformer. Please reply.
can i use smaller magnet wire on secondary like 0.3 20 pcs
Yea
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 ❤
Sir, did you test in lower voltages like 100 or 95v input is it giving same output & same amps?
please suggest a design for dual rail o/p of ±15v or ±18v for my audio opamps, just winding center tap, opto on + supply & reversing one schottky & capacitor enough.
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
I made it typically as you did but the output voltage is fluctuating and makes noise what is the problem?
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
Sir, will it work from 90v to 265v input? Please reply.
Yes 😎👍
Can you upload video with testing on 100v.
Why the ferrite core EE33 giving me the noise when I put it in the SMPs power supply
I m making 12v 2A and 5v 2A output separately ground SMPs power supply
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 ?
very good bro nice design very compact
very good project ct sir , where do we get emi filter
You can get it from old circuit
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?
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 ye supply minimum ketny volt se on hote ha mujy dc25 volt se 220volt input wale supply chay output 12 volt he hun
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 !
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 it for long time like 12 hrs continuously ?
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 👍🏻
I need to build 24v, what changes need to be done?
voltage is fluctuating , is it noise proof?
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. 😄😃😄😃
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
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
bhai hme stps2045 nhi mil rha he uski jghah mbr20100 lgha skte he kya
Ya sure
Can i use ka3843 ic instead of uc3843?
Same load may amp kaise barana or gatana jayega use a another preset .
what is the inductance of the transformer
I didn’t remember the inductance.
what is the cost of ready SMPS. I what to purchace it.
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
15 ampare 12v 14/5 volt is ka PCB designing setkat smps farmer Ki walding hum KO bana Kar Dy sakty ho
ruclips.net/video/B86aZGCvmAA/видео.html
This smps can easily give 12v 12a and the pcb files are in the video description
All other smps there is a coupling capacitor between earth and -ve of the output. In this circuit no such capasitor included. Why?.
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
Nice work...sir please make a video about hi frequency transform winding with indicator perameters masermant.
Ya soon I’ll make one
Very nice work!
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
But sir it doesn't to work 😢😢😢😢
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.
Multimeter could not read above 10 amp as written on it, so is it real or fake😮
Good video
Thanks 😊
Fantastic smps 😊😊😊😊
What is the spec for emi filter?
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
i try but not working and why you ground feedback?
Please message me on messenger
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
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
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
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
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
Thanks for sharing
Welcome bro 🤭😄
Sir What is the price of UC3843 I.C in the local market?
₹15-₹30
@@kdcreativity6201 ok
hello
how to make it work with 120v network
You have to recalculate the transformer windings.
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
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
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
It's really works bro 🥰🥰🥰I'm very happy to made that circuit
Keep it up broo
Thanks 😊 👍🏻
Same circuit and transformer only changes please let me sir.
Transformer size ?
Please you should select and let me sir.
¿Qué modelo de filtro EMI pones?
How many turns of EI35 transformer? Please replay
Same
How many frequencies
Transformer kha se arrange kiya
Frequncy..??
90khz
@@kdcreativity6201 thank's bro..
Could you provide the project file ( Easyeda)?, Pls
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
Sir aap iska component and diagram provide kar sakte hai
Sir please making a ±voltage smps circuit using half bridge configuration
Ok 👍🏻
Can you please share circuit diagram along with the component value.
Please check the video description
Please you should select the size and winding details sir.
Good morning ji ,what is primary winding inductance please let me.
hello how can i make the output voltage 5V
nice
how can increase 10A to 20A ?
Flyback power supply are limited to 150W
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
Muy completa la descripcion y el video, pcb y esquema.. Gracias sr
How to gate this core
From old atx power supply
Sir, yeh project hamare liye bahut importent hai,so aap iska circiut diagram dedete toh hum per bahut Ahsan hoga 🙏
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
OPRETING FREQUANCY KITNA HAI EY BHI JARUR DIKHAYA KAREN ,AAPNE .5MM KA WIRE USE KIYA HAI JO MAXIMUM 85KHZ TAK CARRY KAR SAKTA HAI ISILIY MAIN OPRETING FREQUANCY KE BARE ME PUCH RAHA HUN, BAISE EY BAT RT CT VALUE SE BHI JAN SKTE HAIN ,BAKI SAB 👌
Can i get 24v 2.5 amp output from this circuit?
Yes
@@kdcreativity6201 how??
Increase the secondary turns to 8 and change the 2.2k feedback resistor to 1k
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
Rstart resistor 330k heat🔥 problem
How to solve ?
Use 2W resistor and use a high quality 47uf capacitor
very helpful
Great work. Can you also share the source files with us?
R7 resistor must be Ground rather than connecting to shunt.
Which software do u use for making schematic and pcb design?
Easyeda
Please tell me bro I working on this project
What help do you need ?
Aslamoalakum sir please make this sercuit for amplifier duol suply 25-0-25 10 ampere
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*
Se puede usar IC 3842B?
Yes
And people on KiCAD discord channel keep preventing me from building one 😂
Sir 12v 2apm and 12v 5 amp pcb chahiye
You can use the same pcb for both 2A and 5A without any changes
Nice video . Can I use the same winding method to wind for multiple outputs 12v and 21v?
Yes
@@kdcreativity6201 okay but the output will be isolated outputs. Half of the primary winding will be the last winding . Also the number of layers tape does it matters ?
Yes, use 2-3 layer of isolation tape and always put the secondary winding between the 2 half’s of the primary
@@kdcreativity6201 thank you, another questions for 2 isolated outputs are these.
1. Is the starting point the same for the windings?
2. First I will have to winding half of the primary winding and isolated it with 2layers follow by the First secondary winding and isolated it with 2layes follow by the 2nd secondary winding and isolated it with 2layers then finally the complete of the primary winding with 3layers tape?
3. As a flyback should I use 0.8mm or 1mm air gap?
4. All windings are clockwise?
1.The starting point of all secondary is same.
2.Yes you get it right, very good 👍🏻
3. 0.8mm
4. All windings are in the same direction
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.
Ukuran layout berapa bro?
9cm x 4.8cm
Hello brother a video was made on transformer calculation and also a video was made on 0 to 50 volt 10 ampere variable power supply please thank you
Apa Ada yang udah bikin terus berhasil tanpa problem?
Soalnya saya bikin tidak berhasil
Output tidak keluar