Would you like to purchase the newest version of my power bank design? The latest version is modular and open source, and includes all of the features of my previous designs. The crowdfunding campaign is now live on Indiegogo igg.me/at/polycharge. The campaign ends on August 30th, don't miss out on the opportunity!
This is what UA-cam SHOULD be about. People coming together to discuss ideas how to make things on our own. To stop taking what they give or allow us to have. Thank you sir for bettering lives by sharing the knowledge.
Hello - Here is my opinion on the output inductor. Your 60Hz inverter is referred to as a voltage source inverter, meaning it is supplying a voltage to the load. For some loads with capacitance on the input (or even the DC filter capacitor after the bridge), this capacitance causes a large current to flow from the 60 Hz inverter to the capacitor. Recall that the capacitors job in life is to try and keep the voltage constant, it does not like changing voltages across it. Recall also that the current into the capacitor (and out of the voltage source) is expressed by i = C * (dV/dt). The faster you try to change the voltage across the capacitor, the more current that is required out of the supply. One of the golden rules in power electronics (at least what I was taught 30 years ago) is that you NEVER connect a voltage source to a voltage source. When you connect your output inductor between the 60 Hz inverter and the output load, you now insert a current source between the two voltage source, which is allowed. The inductor acts to provide a constant current and somewhat "smooths" the output current, preventing sudden changes in current. Sorry for the long explanation but I this is an application of basic principals of electrical engineering which should be explained. I enjoy watching your videos and am impressed with your working knowledge of electronics. Take care.
This is correct. I always run into this issue when testing solar charge controllers with SMPS as the input source. Using an inductor or a linear supply is the fix
I’m am consistently blown away by your commitment to this project and the quality of your videos. Hopefully this series will stand as a testament to your abilities in the future.
the reason some devices might have issue with that inverter is the output isn't a nice smooth sine wave. some devices might detect the sudden jump from 0v to 140v as a voltage spike and turn itself off to save itself. if you want a real challenge try powering an electronic coffee maker (newer one with a computer in it) not only are they high load but they HATE noisy power supplies, if you can power one of those you can power anything.
Your projects are awesome and videos are self-explanatory. I think youtube must promote these type of creativity, not melting lipsticks in the name of science. Nice work!
Thanks for watching everyone, this video is probably my most technical one yet. If you feel overwhelmed, feel free to ask questions in the comments, and take a look at the design files and the documentation linked in the description. I will get to more interesting design projects (including the power bank) very soon.
That's a lot of work to make an inverter that only supports 150W (114V@1.32A). I realize you did it to learn, but, you could probably buy a higher power inverter for less than it cost you to design, test, & build your inverter. The inductor that you had to add to your inverter to support some SMPS may store sufficient energy to compensate for weakeness in the integrity of the modified signwave--just a guess.
As always, this is such an awesome project from you! I love what you do with your videos and I love seeing how your knowledge of electronics is improving, mainly because I am doing the same thing. Could I just ask, where do you learn all of this stuff? Do you watch youtube, read articles or do you know someone who does this kind of stuff? Are you subscribed to some learning site or maybe you pirate learning content? Please answer. Thanks for your work Also, it looks like you switched to fusion 360?
@@popvotocek My biggest source of learning electronics is just from articles online and reading reference design docs from sites like Digikey and Mouser, and making designs of my own. I switched to Fusion360 because I realized that it is much more accessible to the average viewer.
the long wait was worth it! another awesome video and I learned a lot again. You're an inspiration to my channel. Please continue doing these projects. I really enjoyed it! From Philippines
Hi friend, awesome work! Quick tip on your PCB layout: It is not a great idea to add vias throw SMD pads, since it will absolve all the solder when soldering, leaving almost none to solder the SMD contacts. It is recommended to add a via next to a GND pad of IC's, capacitors and so on, to reinforce the GND. Also you can use them for thermal dissipation, but take into consideration that this problem might occur, so always consider the vias position. Also organize your labels, since they might be confused for some users.
When he said everything is open source. Me: oh noo. That’s too much for my brain, thank you, I’ll let you do your passion and I’ll just buy the result.. This person really inspires me.
Thanks for the very well made and informative video, the only thing I could suggest is adding a card at 4:10 to warn people with epilepsy of the flashing lights.
Very very instructive video. Little comment on the H bridge: one output of the MCU will drive Q13 and Q14 MOSFETs and the second output drives Q11 and Q12 MOSFETS. Because no MOSFET are perfectly equal, you should try to drive the Q13 and Q11 MOSFETs with the PWM while Q12 and Q14 MOSFET should be turn on for the the duration of the PWM on Q13 or Q11. The only CONS, you will need a 2 mores output of the MCU to drive Q14 and Q12, minor sketch (program) modifications. I'm not sure if this will improve the design but it sure made a sound solution when running a DC motor and might render a bit more efficient due to less switchings. Othwerwise, you made it great design and thanks for sharing.
i really like the attention to details and the projects it's self. When I get my salary I'm gonna make sure I will leave a tip on thingiverse, you really disserve it. Keep up the good job.
btw when u connect the switching load the inverter was not working probably because of the peak current spike that gets generated as the SMPS pulls power. Inductor solved it by smoothing the current draw and not triggering current protection.
This is hands down one of the best electronics video i've ever seen! A handmade acdc powersupply made like this would also be awesome. Keep it up, really appriciate the video!
Waiting for commercially available PowerBank from you sir!! Please make it global ! you can !!!!!!! Your projects are awesome !! I wish you were in India so i could have met you !!
Well, this was a great job to build an inverter. Love to see youtubers not using off the shelf Arduino nano and rather building ckt in their projects. The modified square wave is not desirable for pfc circuits present in some modern gadgets. Coil must be smoothing the output of your inverter, and hence bringing the total harmonic distortion some what in the accecptable range( or in othe words, must be improving the shape of the sine wave). 👍
18:28 it could be caused by the inrush current charging the capacitors of the SMPS, and your over current protection kicks in. Have you checked the voltage with your oscilloscope on your current shunt while plugging in a SMPS to the output of your inverter?
Thanks for the comment! However, it is likely not due to the in-rush current because I temporarily disabled Over current protection and the error still occurred.
@@kralyn3d oh, ok. But maybe the IC driving the transformer notices a voltage drop caused by the inrsush current? Coz the IC has a voltage feedback from the output of the rectifier, right?
This was really interesting, although I won't build this myself :) Just out of curiosity, how can this be turned into a pure sine wave inverter? EDIT: I see that it works with inductive loads, which is interesting. I can't say I really understand all this stuff properly :)
Your project is excellent, but your output is not sin wave, it's a modify square wave, so that's why it's not good for switch mode power supplies, you can fix this problem, with PURE sin wave output, and for this reason there is an arduino library that can handle such task.
I am no expert in electronics, but I know enouph about electricity design. It's possible with all the capacitors you have there your power factor is low, apparnt power vs actual power. Therefore, the leading current is corrected by the inductor. Althgough I could be totally wronge.
Very very awesome!!! Do you think a revision where Q11-Q14 can be moved to one side of the PCB so a larger heatsink might be able to be applied to the IC's so they can be cooled more efficiently! Such a great design and awesome explanation! Great Job!!!!!
That's a nice build with a lot of effort put into it. But the AC output isn't very clean and it might cause problems for both battery and load : - For the battery : A alternative non sinusoidal current is made of many harmonics. These harmonics represents a huge waste of energy because only the fundamental (harmonic 1) is useful. every other harmonic is just waste. - For the load : A resistive load shoulnd't care much about this kind of input (the power draw might change a little compared to a true sinusoidal input), but a device that rely on a smooth sinusoidal voltage wouldn't work as expected. I'm thinking about devices that uses triacs for power modulation or a very inductive load. Also, some discrete components can be affected by harmonics if poorly filtered by its power adapter. (I'm only a 3.5 year student in electronics, not an expert. If someone knowledgeable spots error in what I say, please correct me)
great videos with tutorials indeed!! would you ever consider making other useful things like a wifi or LTE booster for outdoor use ? thanks and best of luck!
Why you put there microcontroller when you already have one in main module, add pins to transfer data between modules and it would work much better as one connected system. Don't repeat yourself, as programmers say
Maybe your output voltage has too much overshoot so MOV short them and make your inverter shutdown.another peoplem is inrush current.usually smps has a big inrush current that make your inverter protection turn itself off.in this case use a resistor or maybe your coil help it because coils induce a current oposite of first current
What kind of Oscilloscope is that? Does anyone know? I'm building my first inverter circuit to make a dc welder ac, need to be able to test it. It's only 24v. Can anyone recommend something cheap but reasonable for the job. Not likely to need a particularly high sample rate.
Thank you. I noticed you wear rubber gloves at some point in the video. I assume for safety due to high voltage. Can you recommend a pair of gloves? Which ones are the ones you were wearing? Thanks.
Hi Hyper Runner, now I rebuild onto pure sine wave inverter 300w, here the link: www.homemade-circuits.com/sg3525-pure-sinewave-inverter-circuit/ in this document you can found what is need to convert, basically 4 transistors have to be connected in front of the FETs, it splits the rectangular signal and at the end after the full bridge the 400V polypropylene capacitor (Farnell Order Code: 3106473) and the choke coil (3,1mH) smooth out into a sinusoidal signal shape. The software fixes the rest. I will make video after 1 month. Maybe i will send my conversation to K R A L Y N 3D. Basically this is His business, I just help everyone make a better inverter. Another rule, if you want a 500W inverter that is continuous and not at a peak of 500W, then build a 1.5 kW. Why? Because FETs are calibrated so that their temperature factor depends on almost every parameter. It depends on the frequency, almost everything. If you want to keep this transformer size close, raise the operating frequency to 200KHz. Anyway, a lot can be set in the software. The frequency should be 50 or 60Hz. You can set it to overcurrentLIMIT = 20 if you want a larger amper Let's say 40A. But it is clear that then both the primary side and the secondary side of the transformer need to be changed to a larger one. Perfect as Kralin 3D shows the calculations. Basically everything is explained by KRAL YN 3D. Now that I have told you about the pure sinusoid system, now everyone will be able to build such an inverter for themselves. Basically for me, the inverter (250W) will be one of the modules in my free energy machine. Only one of the modules is the inverter, of the other 10 modules. Basically for me a 250W inverter is enough to start a free energy reverse tesla coil free energy machine, that produces 10KW. Listen my youtube account will soon be a surprise to the world that I am building. Have a nice day for everybody.
do you edit vid yourself? no bad meaning but you should hure editor so you can more concentrate on making therefore we can have more frequent videos from you
Being a modified sine wave you cannot run a TV when camping, delicate appliances need a pure sine wave if not you shorten the life of the TV etc significantly. Square wave modified square wave inverters are only good for basic electronics such as lights and some chargers. Even some AC motors need a pure sine wave. You need to show a warning message about powering monitors, TV's and other delicate appliances.
It could be that you're PC power supply is not working, because you're output voltage is not smooth enough, I don't know how to explain correctly But the voltage curve has these corners and this is bad for switching power supplys
It doesn’t work with some SMPS because it is a square wave inverter with a semi-stable output, the waveforms get messed up under load and SMPS shuts off for safety check out a video on a pure sin wave inverter
I have suggestion for you.. you can make it pure sine wave by just using the Atmega328P to drive the H-bridge and use the Sinusodial PWM method to drive it.. btw, i love your build!
Hi, Great work. Congratulations! I learnt some good things from your work to add to my power supply designs in future. One question/suggestion - can we add a dead time between the switching of mosfet pairs (pin 9 and pin 10) of H-bridge in your code? Thank you.
probably you need to add an inductor because it is out of phase and the load it's an ohmic-capacitive one; adding a coil makes it become an ohmic type. You should try to verify it by calculating the cosy (it should be under 0.8 on 240 50hz don't know on 120). Hope this is useful for you
Would you like to purchase the newest version of my power bank design? The latest version is modular and open source, and includes all of the features of my previous designs. The crowdfunding campaign is now live on Indiegogo igg.me/at/polycharge. The campaign ends on August 30th, don't miss out on the opportunity!
I am from India .In India Minimum current in 220V . Please make a separate for India ❤️🇮🇳 friend.
This is what UA-cam SHOULD be about. People coming together to discuss ideas how to make things on our own. To stop taking what they give or allow us to have. Thank you sir for bettering lives by sharing the knowledge.
Hello - Here is my opinion on the output inductor. Your 60Hz inverter is referred to as a voltage source inverter, meaning it is supplying a voltage to the load. For some loads with capacitance on the input (or even the DC filter capacitor after the bridge), this capacitance causes a large current to flow from the 60 Hz inverter to the capacitor. Recall that the capacitors job in life is to try and keep the voltage constant, it does not like changing voltages across it. Recall also that the current into the capacitor (and out of the voltage source) is expressed by i = C * (dV/dt). The faster you try to change the voltage across the capacitor, the more current that is required out of the supply. One of the golden rules in power electronics (at least what I was taught 30 years ago) is that you NEVER connect a voltage source to a voltage source. When you connect your output inductor between the 60 Hz inverter and the output load, you now insert a current source between the two voltage source, which is allowed. The inductor acts to provide a constant current and somewhat "smooths" the output current, preventing sudden changes in current. Sorry for the long explanation but I this is an application of basic principals of electrical engineering which should be explained. I enjoy watching your videos and am impressed with your working knowledge of electronics. Take care.
Thank you very much for the detailed explanation! It helped me a lot in understanding this fault. I'll add a note on the schematic about it.
@@kralyn3d You are very welcome! Power Electronics is my professional life. Please reach out with any other questions, I am glad to help.
This is correct. I always run into this issue when testing solar charge controllers with SMPS as the input source. Using an inductor or a linear supply is the fix
I liked this your explanation. Pls can you explain what a current source means?
It is appreciated that you have the attention to have a clear pronunciation, especially in technical words👌🏽 Thanks dude 😎
I’m am consistently blown away by your commitment to this project and the quality of your videos. Hopefully this series will stand as a testament to your abilities in the future.
I learn so much from your videos. Thank you for putting so much time into your designs and teaching about how it all works.
2:42 this video la sponsored by Electroboom!!
the reason some devices might have issue with that inverter is the output isn't a nice smooth sine wave. some devices might detect the sudden jump from 0v to 140v as a voltage spike and turn itself off to save itself. if you want a real challenge try powering an electronic coffee maker (newer one with a computer in it) not only are they high load but they HATE noisy power supplies, if you can power one of those you can power anything.
Your projects are awesome and videos are self-explanatory. I think youtube must promote these type of creativity, not melting lipsticks in the name of science. Nice work!
Great video, was only looking at h bridges and igbt's to try to change up a frequency too 100hz. Bookmarked!
Thanks for watching everyone, this video is probably my most technical one yet. If you feel overwhelmed, feel free to ask questions in the comments, and take a look at the design files and the documentation linked in the description. I will get to more interesting design projects (including the power bank) very soon.
That's a lot of work to make an inverter that only supports 150W (114V@1.32A). I realize you did it to learn, but, you could probably buy a higher power inverter for less than it cost you to design, test, & build your inverter.
The inductor that you had to add to your inverter to support some SMPS may store sufficient energy to compensate for weakeness in the integrity of the modified signwave--just a guess.
As always, this is such an awesome project from you! I love what you do with your videos and I love seeing how your knowledge of electronics is improving, mainly because I am doing the same thing. Could I just ask, where do you learn all of this stuff? Do you watch youtube, read articles or do you know someone who does this kind of stuff? Are you subscribed to some learning site or maybe you pirate learning content? Please answer. Thanks for your work
Also, it looks like you switched to fusion 360?
@@popvotocek My biggest source of learning electronics is just from articles online and reading reference design docs from sites like Digikey and Mouser, and making designs of my own. I switched to Fusion360 because I realized that it is much more accessible to the average viewer.
you should make a compact power supply unit for small form factor PCs
@@ab_ab_c he did it because there are no such small inverters for 24v.
the long wait was worth it! another awesome video and I learned a lot again. You're an inspiration to my channel. Please continue doing these projects. I really enjoyed it!
From Philippines
Lods
Great job master
From INDONESIA
YESS THIS IS JUST WHAT I NEEDED
Hi friend, awesome work!
Quick tip on your PCB layout: It is not a great idea to add vias throw SMD pads, since it will absolve all the solder when soldering, leaving almost none to solder the SMD contacts. It is recommended to add a via next to a GND pad of IC's, capacitors and so on, to reinforce the GND. Also you can use them for thermal dissipation, but take into consideration that this problem might occur, so always consider the vias position.
Also organize your labels, since they might be confused for some users.
this type of videos make me want to know electronics
I love this guy's production content and quality
When he said everything is open source.
Me: oh noo. That’s too much for my brain, thank you, I’ll let you do your passion and I’ll just buy the result..
This person really inspires me.
Thanks for the very well made and informative video, the only thing I could suggest is adding a card at 4:10 to warn people with epilepsy of the flashing lights.
@Random Dude not funny. Epilepsy triggered from blinking light is painful
Now u must make a generator to charge up all those projects
Nice and precise video btw
Great upload, thanks for explaining things so clearly. I usually get lost down the line with things like this.
Great work bro keep it up don’t upset about campaign failure
Wonderful video👍👍👍👍👍👍 Very talented person.👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻
Thank you for this very great explain.
I have learn a lot 🙂
Very great job 👌
Hi
K R A L Y N 3D, You are in my top 5 youtuber in the world ! Thanks for all 👏🏽👏🏽👏🏽 Great job Dude from Martinique (French West Indies) ;)
Very very instructive video.
Little comment on the H bridge: one output of the MCU will drive Q13 and Q14 MOSFETs and the second output drives Q11 and Q12 MOSFETS. Because no MOSFET are perfectly equal, you should try to drive the Q13 and Q11 MOSFETs with the PWM while Q12 and Q14 MOSFET should be turn on for the the duration of the PWM on Q13 or Q11. The only CONS, you will need a 2 mores output of the MCU to drive Q14 and Q12, minor sketch (program) modifications.
I'm not sure if this will improve the design but it sure made a sound solution when running a DC motor and might render a bit more efficient due to less switchings. Othwerwise, you made it great design and thanks for sharing.
this video should get more views!!!!!!!!!!!!!!!!!!!!!!!!!!!!
i really like the attention to details and the projects it's self. When I get my salary I'm gonna make sure I will leave a tip on thingiverse, you really disserve it. Keep up the good job.
I don't understand much about electronics, but I watch all your videos. You are the Messi of electrons !!!
These are quality videos. I am so glad that I found your channel.
Love the Electroboom reference.
I get really excited when you upload a new video, keep it up.
Amazing as usual!!, I believe that the coil is needed at output for lowering the current ripple, some devices may have protection from high ripple.
Very nice project thank you sir please fast on upload your video.
Excellent work. I would have added X and Y capacitors for better stability on your push-pull converter.
Massive fan of your work, keep it up!
Good job and electroboom was here😂
btw when u connect the switching load the inverter was not working probably because of the peak current spike that gets generated as the SMPS pulls power. Inductor solved it by smoothing the current draw and not triggering current protection.
I love how comprehensive Kralyn is. I now understand the concept. Thanks
This is hands down one of the best electronics video i've ever seen!
A handmade acdc powersupply made like this would also be awesome.
Keep it up, really appriciate the video!
Waiting for commercially available PowerBank from you sir!! Please make it global ! you can !!!!!!! Your projects are awesome !! I wish you were in India so i could have met you !!
Well, this was a great job to build an inverter.
Love to see youtubers not using off the shelf Arduino nano and rather building ckt in their projects. The modified square wave is not desirable for pfc circuits present in some modern gadgets. Coil must be smoothing the output of your inverter, and hence bringing the total harmonic distortion some what in the accecptable range( or in othe words, must be improving the shape of the sine wave). 👍
Good video so far, as always ofc
Add a capacitor at output for clean up wave .value of capacitor 0.47uF ,310 Vac , MKP material.
It's freakin awesome :O Great work! I hope to be able to buy the power bank soon!
the fan noise will be different with the modified sine inverter compared to pure sine wave
18:28 it could be caused by the inrush current charging the capacitors of the SMPS, and your over current protection kicks in. Have you checked the voltage with your oscilloscope on your current shunt while plugging in a SMPS to the output of your inverter?
Also want to know
Thanks for the comment! However, it is likely not due to the in-rush current because I temporarily disabled Over current protection and the error still occurred.
@@kralyn3d oh, ok. But maybe the IC driving the transformer notices a voltage drop caused by the inrsush current? Coz the IC has a voltage feedback from the output of the rectifier, right?
It is great, and well explained.. thanks
Good job
GENIUS!!!!
This was really interesting, although I won't build this myself :)
Just out of curiosity, how can this be turned into a pure sine wave inverter?
EDIT: I see that it works with inductive loads, which is interesting. I can't say I really understand all this stuff properly :)
Your project is excellent, but your output is not sin wave, it's a modify square wave, so that's why it's not good for switch mode power supplies, you can fix this problem, with PURE sin wave output, and for this reason there is an arduino library that can handle such task.
Is nice to see u again
Very nice video
You brought light for us :)))
I am no expert in electronics, but I know enouph about electricity design. It's possible with all the capacitors you have there your power factor is low, apparnt power vs actual power. Therefore, the leading current is corrected by the inductor. Althgough I could be totally wronge.
Great video. Keep them coming
2:43 FULL BRIDGE RECTIFIER!
well performed.. :)
Very very awesome!!! Do you think a revision where Q11-Q14 can be moved to one side of the PCB so a larger heatsink might be able to be applied to the IC's so they can be cooled more efficiently!
Such a great design and awesome explanation! Great Job!!!!!
Great video thank you for posting it.
Please do for pure sine wave Inverter
please make high power smps
If your target output frequency and voltage was the same as your input, could you eliminate the transformer and rectifier?
That's a nice build with a lot of effort put into it.
But the AC output isn't very clean and it might cause problems for both battery and load :
- For the battery :
A alternative non sinusoidal current is made of many harmonics. These harmonics represents a huge waste of energy because only the fundamental (harmonic 1) is useful. every other harmonic is just waste.
- For the load :
A resistive load shoulnd't care much about this kind of input (the power draw might change a little compared to a true sinusoidal input), but a device that rely on a smooth sinusoidal voltage wouldn't work as expected. I'm thinking about devices that uses triacs for power modulation or a very inductive load.
Also, some discrete components can be affected by harmonics if poorly filtered by its power adapter.
(I'm only a 3.5 year student in electronics, not an expert. If someone knowledgeable spots error in what I say, please correct me)
Great explenation, Sir, you got a new Subs... Keep it up
why don't you make can pure sine wave inverter, which is efficient when using an inductive loads, motor may lost longer with those sine ways.
nice, is there a reason why didn't You created pure sine wave inverter?
great videos with tutorials indeed!! would you ever consider making other useful things like a wifi or LTE booster for outdoor use ? thanks and best of luck!
Why you put there microcontroller when you already have one in main module, add pins to transfer data between modules and it would work much better as one connected system.
Don't repeat yourself, as programmers say
18:29 you need 12v 7A OR 12V 9A
Maybe your output voltage has too much overshoot so MOV short them and make your inverter shutdown.another peoplem is inrush current.usually smps has a big inrush current that make your inverter protection turn itself off.in this case use a resistor or maybe your coil help it because coils induce a current oposite of first current
Actually inductors block ac and capacitors block dc
informative video
What kind of Oscilloscope is that? Does anyone know? I'm building my first inverter circuit to make a dc welder ac, need to be able to test it. It's only 24v. Can anyone recommend something cheap but reasonable for the job. Not likely to need a particularly high sample rate.
Thank you. I noticed you wear rubber gloves at some point in the video. I assume for safety due to high voltage. Can you recommend a pair of gloves? Which ones are the ones you were wearing? Thanks.
great stuff!
Next improvement, generate a pure sine wave output.
正弦波逆变器输出端应该有LC滤波电路
Please make a 30V to 220V pcb
hey how can i convert this to a 220v output with 1000w output (size is not an issue
Also Make A sine wave inverter based on arduino .same as.
Will the new version of power bank also be open source? I mean the one with a single pcb?
I can help you . Please teach me or tell me source from where you learner
Any thoughts on using a LUT containing calculated sine/cosine values in the 328 to send PWM to the H bridge to create a truer sine wave?
I did something similar for a 3phase variable frequency drive but I never got around to testing. You've inspired me to come back to it :) thanks!
This is possible, but I don't think my optocouplers are fast enough, faster optocouplers would suffice for SPWM sine wave application.
why don't you make a pure sine wave inverter, which is efficient when using an inductive loads, motor may lost longer with those sine ways.
Hi Hyper Runner, now I rebuild onto pure sine wave inverter 300w, here the link:
www.homemade-circuits.com/sg3525-pure-sinewave-inverter-circuit/
in this document you can found what is need to convert, basically 4 transistors have to be connected in front of the FETs, it splits the rectangular signal and at the end after the full bridge the 400V polypropylene capacitor (Farnell Order Code: 3106473) and the choke coil (3,1mH) smooth out into a sinusoidal signal shape. The software fixes the rest. I will make video after 1 month. Maybe i will send my conversation to K R A L Y N 3D. Basically this is His business, I just help everyone make a better inverter.
Another rule, if you want a 500W inverter that is continuous and not at a peak of 500W, then build a 1.5 kW. Why? Because FETs are calibrated so that their temperature factor depends on almost every parameter. It depends on the frequency, almost everything. If you want to keep this transformer size close, raise the operating frequency to 200KHz.
Anyway, a lot can be set in the software. The frequency should be 50 or 60Hz. You can set it to overcurrentLIMIT = 20 if you want a larger amper Let's say 40A.
But it is clear that then both the primary side and the secondary side of the transformer need to be changed to a larger one. Perfect as Kralin 3D shows the calculations.
Basically everything is explained by KRAL YN 3D. Now that I have told you about the pure sinusoid system, now everyone will be able to build such an inverter for themselves.
Basically for me, the inverter (250W) will be one of the modules in my free energy machine. Only one of the modules is the inverter, of the other 10 modules. Basically for me a 250W inverter is enough to start a free energy reverse tesla coil free energy machine, that produces 10KW.
Listen my youtube account will soon be a surprise to the world that I am building. Have a nice day for everybody.
@@kvantumfeny I am eagerly waiting for your next video. And I'm pre - subscribed to your channel, Hoping video will be posted in the kvantumfeny.hu.
Hi how can I contact you
damn thats very detailed informtion watchout for copy cats
That’s a square wave inverter, not a sin or a modded sin wave one
Wow. And you are not a professional engineer??
Damn, you are good.
Will be ready to buy this if its available for international shipping.
Good job
do you edit vid yourself? no bad meaning but you should hure editor so you can more concentrate on making therefore we can have more frequent videos from you
Красава
👏👏👏👌
Being a modified sine wave you cannot run a TV when camping, delicate appliances need a pure sine wave if not you shorten the life of the TV etc significantly. Square wave modified square wave inverters are only good for basic electronics such as lights and some chargers. Even some AC motors need a pure sine wave.
You need to show a warning message about powering monitors, TV's and other delicate appliances.
Try great Scott he had some experience with electronics and making two inverters. you might learn something from him
Very nice project thank you sir please fast on upload your video.
It could be that you're PC power supply is not working, because you're output voltage is not smooth enough, I don't know how to explain correctly
But the voltage curve has these corners and this is bad for switching power supplys
Hi , mate I like your videos . Your videos are a LEVEL UP as compared to others ! But , what is ELECTROBOOM doing in your video ?¿? Nice video
The rectifier reference summons his precense.
It doesn’t work with some SMPS because it is a square wave inverter with a semi-stable output, the waveforms get messed up under load and SMPS shuts off for safety check out a video on a pure sin wave inverter
I have suggestion for you.. you can make it pure sine wave by just using the Atmega328P to drive the H-bridge and use the Sinusodial PWM method to drive it.. btw, i love your build!
Yes, it is definitely possible, but the Octocuplers I selected is too slow, and an updated design with higher speed optocouplers is necessary.
@@kralyn3d maybe use a EGS002 module?
@@kralyn3d have a look at HCPL3120 isolated gate drivers.
Bro how can i make this pure sine wave
Hi, Great work. Congratulations!
I learnt some good things from your work to add to my power supply designs in future. One question/suggestion - can we add a dead time between the switching of mosfet pairs (pin 9 and pin 10) of H-bridge in your code? Thank you.
probably you need to add an inductor because it is out of phase and the load it's an ohmic-capacitive one; adding a coil makes it become an ohmic type. You should try to verify it by calculating the cosy (it should be under 0.8 on 240 50hz don't know on 120). Hope this is useful for you