TL494 Variable Switch Mode Power Supply 0-35V 0-20Amps
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- เผยแพร่เมื่อ 21 ต.ค. 2024
- You can find the Circuit here:
electrobuff.bl...
#TL494 #powersupply #electronics
Hi. In today's video I'll show you how to make a variable and regulated Switch Mode Power Supply based on the TL494 PWM IC. The output can be smoothly adjusted from about 2 to 35Volts while the current can be set from 3 to 20 Amperes with ease. Its built on a Half-Bridge Topology, and the feasible power is 750Watt. Thanks for Watching, and don' forget to LIKE, SHARE and SUBSCRIBE for more Amazing Videos.
Website:
electrobuff.blogspot.com
hi dear,I just made this circuit!! it working perfectly,thanks, greetings from Buenos Aires,Argentina
Welcome
hello bro.is your circuit still working fine??im going to make this project but i dont want the feature of current sense from pin 4.so please tell me how do i skip this.do you have any social media because i need you guidance😃😃😃😃😃😃🙏
@@kdcreativity6201 Ground the pin no 4 with a 4.7k ohm resistor.
U have done a great job, please make a video for 5000w/24vdc inverter with feedback• please make the naming of the components bold• thanks
I need current control for the output of the power supply without voltage drop and only the current does not exceed a certain value and this value can be adjusted.
please guide me.
You don't need LM358. You can use internal TL494 opamps for CC and CV. I did and it works.
Can you upload circuit to see how it work ?
Very interesting project. 2 points 2b noted here. Music is 2intrusive, so reduces the clarity of your narrative. You spk2 fast in an unfamiliar dialect making it very taxing 2 understand what your saying. Other than that it was very good. Thank you very much. I hope to build this one of these days....
Hello i make my own tl494 based on atx power supply but i have problem the duty cycle is 60% not 45% from pin 8 and 11 ?? Why duty 60% not 45% !!!
Hola como se podria modificar para poder variar la corriente minima sea mas baja?,Gracias
Hi, Please tell me the Both transformer core size,bobbin size and wire diameter mm
Que interesante sigue adelante saludos desde Bolivia
where did 5v come from
Where does tl494 feed from???
Wonderful video. Great explanation. You are awesome. I am also a youtuber.
i'm really wait for this ...i need to make this...please tell me sir about gdt transformer and for main transformer ..."🙏🙏 does it for ee16 and etd 42? and how about large copper wire transformer? i don't know to calculate. please...."
Dear sir, I'm from Bangladesh, How can limit 0-35V 0-20A?
Super-good. I love it.
Muy buenas ideas para armar proyectos
HOw can current limit of 0 - 20 A be achieved by using an SCR on DTC Pin? As soon as over current is sensed, power supply will totally shut down and need restart for resuming.
Thanks a lot
Can you help me about UPS(kepo650+) circuit❤
Thank you.
Yes!!
hei can i used this scematic but just change the main transformer with CT output for audio.. like a +75vdc 0 -75vdc just change winding secondary?
I think this is just Theory that works only in simulation. Did U actually made this SPMS, and is it working? Where are the snubber elements (diodes, capacitors, resistors) on power parts?
sir i dont have tl494 in my proteus.. how can i install that in my proteus?
I would say very interesting as a project, would it be possible to use a 50v DC source to do the same job? Maybe changing the project.
50V may not work that well with a Half Bridge. The voltage is kind of low, it will greatly reduce the power but can work to some extent.
@@ELECTROBUFF I understand, well then there will be the possibility of making a video about it a step-down from 50v to 30A with another way of adjusting the current and voltage? Thank you very much for answering me
can i use xl0840 in place of mcr100/s1006l
Where do you get your +12V for the TL494 and also power supply to the LM358?
According to the schematic, there must be a separate power supply, which comes in to J1 (12~16VDC)
Hello, I want to try your project, but where am I doing wrong, can you please check.
I emailed the proteus drawing file
Nice project 👍
Please verify your circuit. Current limit can not be achieved using SCR. Please confirm.
Can we use bridge rectifier at the output because bridge is more accurate!
No, Because bridge rectifier if used for low frequency ac
For output we use ultrafast diodes such as MBR family,
Sometimes these ultrafast diodes can lose their speed so they don't pass the power
You can identify this issues only with oscilloscope
Or if you get 0.01v something like that
And all the main components are good such
As the voltage at ic power and voltage on the big capacitor ( 300v dc )
And the transistor or MOSFET is good
Then just replace the diode at the output
large voltage ripple at the output proportional to the output current
hello do you have this pcb for sale ? I want to make it for home use
Thanks....
I am currently working on tl494, I will try this ,this is awesome, please tell do you have a working model?
It is wrong circuit.
Where is your working product and also the load test?
Is there any other way than full bridge to drive Gate Drive Transformer ?
It's better that way. You can use dedicated high and low side IC drivers instead.
Oh thank u sir. BTW I have smps project, and I use two switch forward topology, can I use Gate Drive Transformer too instead of IC driver?
Olá Prof. boa aula
Hi, How can you obtain 12-16VDC to power switching transistors section?
You can use a low wattage step down iron transformer psu, or use a bleeder resistor startup circuit with a relay delay turn off and then use an auxiliary winding to power the oscillator once the circuit has began switching.
Hello, very good explanation friend. But nevertheless; you should place the schemes in all your videos to download them. 👍👍👍👍👍
uzzors2k.4hv.org/index.php?page=benchsmps1
@@prinzvongrorgenwugs7474 thanks brother 👍👍👍👍
Pcb for circuits
What's the software name that design this schematic?
you told you will provide with pcb layout etc you still didnt give , only circuit diagram
hi... I have Loadstar LP3005D (0-30V 0-5Amps) adjustable bench power supply, now the voltage is only increasing only up to 10V and not up to 30V. i have replaced potentiometers, caps but the problem remains the same. plz help me with the circuit to refix it...
please share the schematic file for easyeda software
Thank you
where is the part 0-35v 0-30A ????????? where is modification ?
Hello, thanks very much for your video, it was of great help.
Please can i get in contact with you, i have some personal questions and i wish you could help me.
can i use irf640 ?
o TL431 substitui o S1006L ?
Hi pdf please
Część podając pdf bardzo byś mi pomógł to jeść coś czego szukam do zasilania moich projektów dziękuję
can you put english subtitles. ı cant understand anything..
Ja montei esta na fase de testes.
Você tem que mostrar o circuito funcionando na prática!
Show!!!
Can you repost this video but speak slowly not quickly because too bad that we cannot follow you up and cannot understand
Can you make the pcb ...
Вряд ли - они даже схему не выложили
Sir all circite pdf diagram pcb on discription
make a layout to transfer
I come here coz the title suits my search, unfortunately this is theoretical video only... which I could not trust....
It works, I did it on a breadboard. I also have a PCB layout for those interested.
@@ELECTROBUFF Glad to hear that... then I can't wait to make my own. What is the recommended substitution for scr S1006L which not avail with me? And I am very interested to have the PCB layout if you don't mind... TIA
you still use a transformer to power for tl494. Not good .
Its a gate drive transformer. Its very good for isolation and switching Mosfets on a Half bridge or full bridge topology in many switch mode power supplies.
@@ELECTROBUFF as i said , How to power for tl494 ? have not tranformer gate drive
@@thanho6654 for that you will need an additional 15V DC power supply. You can find a cheap dc-dc psu for that.
@@ELECTROBUFF No , i will use a capactor and resitor for power tl494 from 220v .
you can see here 320volt.com/en/250w-2x35-volt-smps-devresi-atx-psu-modifiye/
hello your so bright but which course to study to-become as you? tell me -JUMA PASCHAL -TH-cam
Electrical Electronics Engineering
@@ELECTROBUFF Juma paschal we are together
@@ELECTROBUFF how about electronics and telecommunication engineering (ETE)
Transformer winding data
TL494
Please tell me in hindi
pdf...🙏🙏🙏
Pdf 💪
español
Man what language u speak
I never understand even a single sentence of what u said! Hahhahah.. try to speak slowly coz ur english is not good and very poor pronounciation.hahahhaha..
Most people understand him.