inside 12/230V 1000W DC/AC inverter (unedited)
ฝัง
- เผยแพร่เมื่อ 14 มิ.ย. 2020
- What's inside a switching 12V / 230V 50Hz 1000W DC / AC inverter with a modified sine wave output. A "quick" unedited teardown video. Notes: On the parallel pair of 150uF 400V capacitors I measured 267V. That's also the peak output voltage. The ten parallel input capacitors are 2200uF 25V. Warning: Despite being powered from a safe battery voltage, the output voltage and the internal voltages of such inverter can be dangerous. Capacitors may remain charged even after disconnecting the inverter from the battery. Risk of electric shock.
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/ diodegonewild - วิทยาศาสตร์และเทคโนโลยี
Don’t worry about the length. I’m still enjoying your videos at 30min. If I had a short attention span I wouldn’t be here in the first place!
I was disappointed that the video would end but fortunately it lasted another 15 minutes! 😁
2:38 “ at a certain age you completely loose the track of time”
So true 😉
Tx! Very informational and interesting video of a neat inverter.
Yeah that's true Dude!
Our brain might be gets heated i think we can use Heatsink. LOL 😄
Agree, in two or three years from now this guy will be a fireman
I am 25 and I lost the track of time. I think this is not OK
i like before watching the video cus old subs know every video is going to be good and well explained ! ❤
Ohh bhai 🖐🏻
👍
Diode , You are actually best in Power Electronics.
Ever i have seen the most of your Tutorials.
I've been watching your videos for almost 7 to 8 hrs. Worth watching. I really like this inverter.
Really enjoy these long un-edited videos
Made for the thinking people
Thanks for sharing.
I am always looking forward for even a more longer video and all your lengthy talks. So accurate and sincerely true to the subject that you always talks of. So many black Magic of electronics you just talks like cooking food in the kitchen. I really appreciate your experience and truth. Thank you diode gone wild.
Welp, next time my appliance combusts, i'll pour some Czech beer on it, since you didn't put a warning that it's obviously sarcasm 😆
Well it's unedited ;)
Just make sure it's really Czech. Beer from other countries may produce undocumented/unexpected results :D
@@romanlubij52 Sure, but do they all work as well? I'd rather pour Krušovice or Plzeň elsewhere 😉
@@lakiza55 Maybe? Let's find out!
This a Practical and useful device . So I speed time on this but SSTC ! Only to learn some basics.
Thanks Diode.
Your videos are worth every minute!
Good too see u again Professor (tallking) with new ideas..
It would be great if you could do a basic schematic of the power stages. Just the discussion would be educational as you are very talented at explaining these things in an understandable but not over simplified way. As always, thank you hugely for taking the time to make these videos. Your teaching is greatly appreciated.
Great style of teaching! 🙏
At the higher power the efficiency is about 92 %, thats much better than i would have expected. It would be really interesting to see how the efficiency changes with different loads, if you ever manage to find a suitable 12 V supply. Thanks for the video!
Very nice and informative video, as always.
My favorite kind of video in ALL of TH-cam! We hope you're well over here in Pennsylvania U.S.A!! And pet yourrrrrrrr cat of courrrrrrse.
I really liked your power supply.....0 - 30V and 0 _ 60 A
It outputs nice amount of currrent....
And the sound of fan of the power supply is loud too....
I think that you made that power supply yourself...💯
1:34 diodegonewild gone full slav, he just recognised Taiwan as an independent nation, so Xi Jinping will cease all diplomatic relations with Czech Republic 😂
The quality of this video is good enough
Nice analysis of the internals of this quasi-sine inverter. This design appears solid, with the five paralleled DC-DC. Modern designs may skimp on such details...but this one may last much longer in actual use. You've not mentioned the efficiency, but a rough calculation base on measurements indicates fairly decent.
I've got a scrap inverter like this. It had some water damaged components, and a broken trim-pot from someone trying to 'fix' it. As I didn't have any set up instructions, I thought it best to scrap rather than maybe start a fire by guessing! It has some useful parts though. It looks like the high frequency transformers might have a push - pull secondary. It looks like yours has 5 double diodes for the rectification (one double diode per transformer). The one I have has got 8 dual diodes to form a bridge with all transformers connected in parallel. The low voltage MOSFETs are IRFZ44 in the one I have, and as it's a 2kW version, there are a lot of them (It's an old unit, so there are 4 MOSFETs per transformer - 2 for each leg and there are 8 transformers in total; some of the MOSFETs have already been re-used to repair lower power inverters - even with the protection, people still manage to destroy inverters quite regularly.
Edited due to finding the actual board, and taking a look again. I got a few details wrong from memory.
Excellent video 👍
I have such a 20(?) Years old modified sinus 12 DC 220V AC converter in my mobile home to power an air conditioner with a 700 W compressor. It runs with my 2x 138Ah Valence LiFeMgO-Batteries with 12.6V. It works well but of course I prefer connecting it directly to 230V mains Voltage if possible. But for an hour or so it is good with batteries to cool 7,30 meters Iveco Mobilvetta mobile home down and significantly lower humidity before going to bed if mains Voltage is not available.
Well done video 👍
Really nice work.
We need a full load test and schematic
Please do lots more of these!!!
Good video. Hello from Brazil
Nice „Reverse Polarity Protection“ as printed as feature on the top....
typing on „do not reverse input“ is a proper way for protecting against reverse polarity....
Nice video Sir! 😊
Your cat is so nice, God bless em
Your channel needs more attention mate
Nĩĩce video!
Good explanation and interesting device.
Now you can power up your Tesla coil with accumulator :)
These are basically built like class-D car audio amplifiers. HV DC-DC converter followed by switching transistors. Using a separate DC-DC converter to make HV rails allows much tighter control of the voltage than simply chopping it and passing it thru a transformer.
This guy is amazing.
very nice videos plenty info
Thank you for this. Much better as the inverters seen on You Tube based on simple Push Pull circuits with small 50Hz transformers that delivers several mega watts xD
Great info. Got a few inverters 3000 watts constant heavy at 4.2KG & 600 watts constant & a couple of smaller inverters Chinese OK for small stuff uptp 300 watts or less. With the cost of electricity in Britain now April 2022 I got a small solar panel & even in slightly sunny weather & not straight onto the panel according to my current meter just over 4 amp I have yet to see the full head-on sun. I use a 12-volt kettle with about 12 amp draw too & I have ordered a small 12-volt stove that draws about 12 amps too. I'm working on cheaper gas too. Its gone crazy here for energy prices.
Good day Sir
Thank you very much for all the effort you put in to help us learn about switch mode power supplies, dc-dc converters, inverters and other electronic products. I want to ask your advice please. I have basically the same setup as in your video above. I have a bench power supply (TTi EX354D) with an isolated output that I connected to the battery input wires of a 3kW modified sinewave inverter( Fivestar FS-I008) to power it. The inverter's input is 24VDC. I also have a CRT oscilloscope(Tektronix 465) with an earthed plug. The probes are rated to 600V and I would use the 10X setting. I have repaired the inverter and would like to view its 220V AC output with the oscilloscope. The output stage of the inverter is an H-Bridge with 2 mosfets in parallel for each leg of the bridge. From my understanding, I should be able to connect the scope probe tip and crocodile earth anyway around (Neutral and Live) to the output of the inverter, as the bench power supply is isolated from the mains supply and the inverter's output is also isolated from its own input via the multiple transformers working in parallel, like the one in your video. Should I use AC coupling on the oscilloscope? Can you please confirm from the information given above, that it would be safe to connect it in this way. Please let me know if you need any further information.
Thank you very much.
Kind regards from South Africa
Thank you thank you you're awesome!
Can You upload a vídeo teaching how to build your big power supply? I know that it's in your website but in vídeo would be fantastic ;3
This seems to be a different topology than all the other boards that you drew schematics before, can you try to make schematics and explain them at lest for the key blocks?
Good video. Can you please show how to connect the output of the inverter ie, 230 volt to the oscilloscope
Too good explanation
Please you can make a video for schematic of this inverter ?
hi man! thanks so much for videos .... I ask: why the sound of some videos are so bad? maybe problems? but with what? distortion?
Dub Dado it usually has to do with rendering the video when it uploads... TH-cam’s fault.
When Diode does not put the fire extinguisher warning and you can finally try it yourself.
Update: Does not work well in Triple Phase 400V systems, will try on a 230V single Phase
?
looking forward to hearing if it worked on a single phase 230v system.
0:12 The first video of fire extinguisher made with cans, not a glass bottle.
Sir your videos are great source of learning.... Have you where reverse engineered inverter base welding machine
Mmm what a nice fan sound 😊😊😊
Keep it up, god channel, god video
With that kind of power and output being modified sine wave the in rush current of the load can be quite high. I am quite surprised it’s not a pure sign wave output.
I have tiny inverter and I think to it's same brand as this on. It's also made in Taiwan and its transistors are connected to the base with same little metal bar.
I thought it was a multi-phase (5-phase) DC-DC converter, but it seems that those 5 transformers are simply connected in parallel.
LM393 is actually a dual comparator, and HA17358 is dual op-amp related to LM358.
Had it been a ROYER Oscillator based inverter with a tuning capacitor across the driving winding you might get a nice clean sine wave.
Have you try testing the gate voltage of the full bridge high side because I don’t understand how the gate can handle 230 volt
So you are planning to power the tesla coil with it so you can probe it with the big oscilloscope?
Also if the cables are 16mm2 they would dissipate almost 20W over a meter. Seems marginal?
nice fire extinguisher😃😃😃
Jak je to se zemněním měničů 12/230V? Pokud bych ukostřil kostru, nenaměřil bych potenciál i na jinak bezpečné baterii?
Thanks Sir for all,
I have one 1000 watt, voltage is stable about 220v but the frequency is double about 100 Hz, any solution for this ?
You may not read this, but I use an app called MoviePro on my iPhone and it allows me to lock the camera in any orientation while recording among hundreds of other settings for recording. Never a flipped or vertical video in the house. :D
Diodegonewild:lets make this quick layz video
The fideo literlary almost 30MINS
Perhaps the output needs a larger inductance to round off the spikes a little.
Nice fire extinguisher 😂😂😂
So this is diode gone wild and.. Wait he didnt say that this time!!!!!
When using Mosfets, you have i.e. 1.4millohms, even at 100 amps (in case you run everything over one mosfet) why do they need such big heatsink?
The internals look like an ANCIENT design from early 2000's
What is the brand/name of that little oscilloscope?
Here's a video about it th-cam.com/video/gCI0S3Bcofc/w-d-xo.html
Nice vid
Was you that build your 3-60v 0-40A power supply? it will be very interesting to see a video about it... tks
Of course it was me :). It's documented on my website:
danyk.cz/reg60v_en.html
@@DiodeGoneWild Hi that's a very interesting project. Yesterday I sent you an email. I hope it will reaches you
Certainly built in 2000 based on the dates on some of the chips.
Can you give me the référence of transistor between 4fast diode and 4dual mosfet
Nice Danyk
Love from India ♥️♥️♥️♥️🇮🇳🇮🇳🇮🇳🇮🇳🇮🇳
I want this guy to order my food for me at a drive-through.
lol
Those modified sine wave inverters are good for burning stuff out if you use something that has a capacitive dropper or any sensitive circuit in it. Made that mistake with fans and such during power outages in the summer. Expect cool breeze, get magic smoke instead. Not to mention those cables will get hot as hell on a 1000W load. They never seem to use wires big enough for the 100 some odd amps the thing needs.
It's also not good for induction motors and transformers, they will overheat and produce buzzing noise.
@@Felix2417425 Yeah only motors I found that do ok (outside of universal motors) are shaded pole motors. Since theres no cap, just some extra buzzing, and heat, but they run hot to begin with. But yes any sort of induction motor with a cap forget it. Buzzes like hell and gets real hot. The inverter also shows a huge amp draw due to the poor PF as well.
@@Felix2417425 I have run fridges on them out of desperation, tho, to save the food. They do ok but have to let it sit for awhile once the power is back or it will go locked rotor due to the hot compressor once plugged back in.
"Lazy quick (30 mins.) video"
Nice.
Awesome need video
Even if it's crappy..... there's a nice big heatsink for other projects!
I also like the heatsink :).
It would be interesting and not too difficult to replace the "modified sine wave" driver with a cheap EGS002 driver board for the output stage to give true Sine output waveform.
You can use it like ups?
11:14 About the lineair regulator: it will have to dissipate quite a lot of energy to regulate the voltage doen from 18V to 14.4V. At say 200W that would be 40Watt. Or did I make a mistake here?
Your calculation is correct.
3lm1c4a
Thanks.
Yes, the charger probably dissipates several tens of Watts. But having a giant heatsink already in it for the inverter, it's easier than designing a buck regulator.
Joachim Shekelberg
Good point, but that would also limit the charging capacity and thus not using the full potential of the (expensive) transformer and therefore not the smartest solution I think.
Joachim Shekelberg 👍
How difficult would it be to modify the drive circuit to have a variable frequency output?
Actually it is a shame that it isn't a true sine wave inverter as all the hardware bulilt into it to be it as one. The only thing needed to make this a sine wave inverter or arbitrary waveform and frequency you want is to replace the control section of the secondary H-bridge. Could be possible with a microcontroller (DSP maybe, that's how better UPS-es do usually), or could be done in purely analog ways by driving the bridge with a switch mode push-pull driver (SG3525 maybe?) and modulating the reference with an analog sine wave.
But if you want XTAL precise frequency, probably is is way easier to do it digitally.
Unedited videos are great. 😂
Sijuper gr8!
More than 80 A via those cables? I doubt it.
good
Have you ever try to welds by car battery?
you could be university professor. Explained with quality.
an you do tutorial for crt tv? power supply board and color cathods?
It probably wouldn't hurt to make a multiple LC filter network for the output.
I have asimilar device from the same combany, solar/battery powered and for 5000 watts.
How much current it takes without load ?
Nice, you are generating 30,4% of traffic to my ABB 20 kW teardown video, of the 10,4% referencing videos. 3% celebration!
I the next video take a look inside a 3 phase inverter.Or make one :)
we have a 24volt (2x 12v batteries) 3500watts domestic inverter for our workshop
DGW: - It's gonna be a lazy quick video…
TH-cam: 29:54
Me: Okkkay, right!
I must admit that time flies by quite quickly when you watch Danyk's videos.
Danyk is our European Dave :)
He even has his own DanykCad!
@@haploideallel I love her eyes!
@@jkobain - Gotta admit here; that went right over my head, what you just said (about the eyes?)...
@@haploideallel yes. Danyk's Cat's eyes.
Using A tungsten lamp with a modified sine wave inverter fluctuates the voltage at 50Hz
Not shure about who designed this inverter, but a famous Hungarian electronic parts store named 'HQelektronika' re-badged and sells these unit.
Snapper or Snubber circuit at 12:28?
Is it possible to make 50Hz inverter with vacuum tubes?
Of course it is possible.
For portable application, no-one dares to make a pure sine wave inverter. With quasi-sine wave, running a portable (table top) fan will make a weird noise out of it.
It's not that they "don't dare", but rather that consumers don't always need or want to pay for an expensive pure sine wave inverter.
There are plenty of portable pure sine wave inverters available if anybody wants to buy one..
@@johncoops6897 True. Sine wave inverters costs more, has higher switching losses in IGBTs/ MOSFETs, but less harmonics (and losses in load). Moreover, sine wave generation needs more complicated software (LUT), PWM module with dead time. Square wave is easier in terms of HW design and also can be implemented entirely in HW.