Stealing from China 5! 12-220V power inverter

[@Nomine_Pater]

Very WELL said (I BADLY need one of those items, *BUT*...): "0:50 from a sinusoid, therefore, I strongly 0:53 advise not to connect any loads other 0:55 than incandescent bulbs, soldering irons 0:58 and so on. Secondly, inside them, there is no 1:00 stabilization and, depending on the input 1:02 voltage and load power, the output 1:05 voltage will walk in a wide range. There 1:08 is no protection, neither from short 1:10 circuit 1:10 nor from high or low input voltage (...)"

[@wilsonafuevu9036]

Thank you for this, I tried it, and it worked, and it regulated the output well. The only challenge was mosfets heating up excessively when I loaded the output with the bulb

[@ShubhamPrakash-my7cg]

Wow great dear how much watts it handled with ease. Can I put 200 watts of load ?

[@wilsonafuevu9036]

@@ShubhamPrakash-my7cg yes you can

[@hamohamo234]

You can't say you stole it from China because they stole it from someone else. Btw. Good video.

[@hyperhektor7733]

uno: reverse card ut2004: double theft!

[@ถ.วัวลายตําบลหายยา]

555 Yes N Yes

[@Nomine_Pater]

Oh! That´s the voice I have liked in other videos...

[@CoolDudeClem]

I would prefer AC output. This could be a could circuit for powering up tube circuits though.

[@motherjoon]

Do a video on magnetic core selection. Talk about different magnetic materials from EPCOS and Feroxcube. Can you do a EEVblog style whiteboard instructional + practical video?

[@DD-lq5ty]

Привееет не думал что у тебя есть еще один канал👍

[@damiaomendes2809]

obrigado amigo ! com isso consigo fazer um conversor de 24V para 12V 1000Watts ?

[@electroman1556]

I always love this channel! thank you so much

[@timh2870]

interesting. I added a feedback loop to the "1000w" version using a tl431 and a pc817 in a similar fashion to yours. I found that when the duty cycle was less than 49%, there was much ringing on the transformer and the fets got very hot. it's likely your transformer has enough stray inductance to avoid this problem, or your control loop is better.

[@Josemarquez-nu2sn]

I liked your project thanks for sharing. I have a question you can ask another converter based on this 24v or 48v dc at 220. Thank you

[@r0_]

0:45 - 0:50 imagine connecting a digital clock to that

[@mrfrog8502]

10:40 I see few things wrong with this circuit. Gates resistors have too small values. SG3525 can only provide 400mA peak. No snubber network on the MOSFETs drains. Value of the 1k potentiometer is too small to limit the feedback current when zener diodes are conducting and finally there should be one extra ceramic low ESR capacitor near the source pins of the MOSFETs because electrolitic capacitor alone does not have low enough ESR to deal with sharp current spikes during transistor switching.

[@vitsirucka6385]

I built this circuit with a small transformer and a only 2 MOSFETs and it worked for loads under 100W. Today I upgraded it to 4 MOSFETs and bigger transformer, similar to the one in the video. Powered it on, lit a 40W bulb normally, tested for around 20s and BAM! Got the exact same pitch sound and exact same loudness bang from the same capacitor. I hope the capacitor didn't kill the IC or MOSFETs.

[@panosd5693]

Make a board for the egs002 It is a cheap true sine wave inverter controller board

[@BitsBlitzPH]

Can you make a video of a pure sine wave inverter? Thank you!

[@johnrudd9550]

No skin effect on the wire because frequency is too low….should use a mosfet driver chip to reduce load on the 3525,

[@ceilingfanmusic6597]

Its a good desing but it needs snubber diods and a snubber network to keep back inductance from blowing up youre transistors like that. As for short protection try a few fets with there bace cenected to the positive of the output through some rrsistors soo if a short acures. This causes the output voltage to drop witch causes the fets to shut off.

[@davey2k12]

Cud just use a relay lol

[@shoumikahmed6373]

please make a SMPS with sg3525 of 1000w.

[@vginside]

@7:51 how do you design a transformer can you explain a little of it! Maybe make a video or if you have one can you share the link? Thanks in Advance!

[@klsonidhanla]

Very nice 👍👍 I download the zip file and schematic open but PCB lay out not supported in my computer. Please tell the file format details . Please.

[@MCsCreations]

Beautiful work, dude! Really nice project!!! 😃

[@hakanbaydogmus438]

selamlar paylaşımlarınız çok güzel bilginize ve emeğinize sağlık teşekkürler..

[@Dc_tech386]

Do you have any information for me about ferrite core to use for inverter so the mosfet don’t get hot on second on any load

[@d.i.yelectronic8592]

Tại sao khi tôi muốn ổn áp ở mức 330v tôi sử dụng nhiều diode zener 47v ghép lại thì điện áp rơi trên opto lên cao

[@sabarinath4527]

Thanks a lot, I have made the circuit. Its working perfectly

[@electronicshomepolley8054]

Did you use the same circuit diagram

[@luchomartinez338]

excelente desde Colombia soy un seguidor de sus publicaciones gracias

[@hamidtb2740]

hi, what is the primary gauge and how many turn used?

[@MagicMagic-yl4sb]

Great project! But please ... make this project with TL494 IC because SG3525 is hard to find in my area.😊😊😁 Thank you!

[@robersound6586]

por lo que veo es semejante al TL494,

[@DavePaul-cr9nx]

What is the model of this mini oscilloscope

[@jvankhasho7784]

What about the transformer,windings secondary and primary voltage and resistance ?

[@Dc_tech386]

Not all Chinese mosfet or bad I brought some hy4008 and irf4110 and they work really will they say it’s original it looks different from fake mosfet like it

[@vipulgujrati8553]

Help plz. Transformer winding data show in video primary data no show help me

[@RFADICTOS]

wow gracias por ese dato compañero..me sera de utilidad...jejeje para modificar algo parecido..

[@jaimeiiman]

Porque no usaron el mismo transformador?

[@adign027]

can you explain why this inverter's output is rectified and filtered (DC) ?

[@vijaykumar-fb6yp]

bcoz the output frequancy is very high up to 30khz & in such device like cfl & led bulbes rectifir not able to filter high frequancy

[@AmplifierWorld]

Can you design inverter with ferrite core transformer to run any kind of load, specially inductive load

[@joliynill2430]

Where is the PCB layout?

[@JohnDoe-es5xh]

Higher frequencies (here around 30 KHz) benefit in smaller transformers, but devices, which need 50/60Hz can't be driven by this circuit.

[@mattgorzka3094]

Have you tried using transformer app you recommended? It gives nonsense results no matter what I enter like 'number of primary turns 0'.

[@BlackopTN]

what changes do I need to make the circuit work with 24v instead of 12v apart from transformer primary winding and mosfets with suitable Vds ?

[@Ncky]

Dc voltage after rectification with capacitors is around sqrt2*ac not the same value.

[@ЛазарЈаковљевић]

But 220V is effective value, 310VAC peak to peak is equivalent with 220V DC

[@Ncky]

@@ЛазарЈаковљевић for incodesent loads yes but what about smps? Its taken in count that voltage after retrification is 315v but youre feeding 220vdc(which goes down to 218v after bridge rectifier) and youre running your psu at higher duty cycle and loading it more

[@ЛазарЈаковљевић]

@@Ncky well it is correct but I think that this power supply is designed only for incodesent loads, you will need 315V supply for SMPS, but if you connect a light bulb to it it will be too much

[@Ncky]

@@ЛазарЈаковљевић u speak serbian?

[@ЛазарЈаковљевић]

@@Ncky Да, говорим српски

[@arnabroy5613]

Can I replace MOSFET to IGBT ??

[@safetysecond55]

What will happens if PC817 Get damaged ....??

[@electronicshomepolley8054]

The voltage will jump up go 400 +

[@Hadadoh]

I think it can only (strictly) work with SMPS only. Obviously transformer based devices won't work.

[@Basement-Science]

There are problems with that as well. In an SMPS the input capacitor is normally charged to 325Vdc, but with this circuit it will only charge to 230Vdc. Depending on the rated input voltage, that could be a problem. Also, in its bridge rectifier, only 2 of its diodes will have to handle all the load. The other 2 will pass no current at all.

[@Hadadoh]

@@Basement-Science sure I had forgotten about that. You are right

[@pruthuvinavod7035]

What is the primary wire gauge and how many turn used

[@hyperhektor7733]

can this be modified to 400-450V by just replacing the zener diodes?

[@lifeai1889]

i connect a led bulb to it and it burnned in few second but other one just work fine

[@arnabroy5613]

Can I use IGBT please reply mam

[@hanafimd8288]

please share to us the schematic diagram and pcb layout

[@kamalaryalaryal6675]

Can u make 230v 50hz sine wave inverter

[@arnabroy5613]

Can I used IGBT ?

[@swedensy]

Lets build a pure sine wave inverter now.

[@Darkryoka]

can you make it output as AC 220V 50-60Hz?

[@two_number_nines]

its almost the same, but you either put a h bridge+ 50-60hz driver on the rectified HV side or make it a half bridge with only 2 transistors, but add another secondary.

[@Darkryoka]

@@two_number_nines i need to learn to do that.. 😅😅

[@hasitharanganath]

Secondary DC to AC conversion H bridge please ...

[@modicoejuakali9421]

i ve tested your circuit the the voltage stabilization doesnt work please review

[@adasahili51]

Do you write transformer winding numbers and wire diameter,

[@vjcreat-tech6038]

Can you tell me 20amp 220v AC motor speed control circuit?

[@ejazhussain2592]

very nice good video good boy

[@emmanuelnwobi6117]

Can u make a DC to ac converter

[@bisnetodeportugues]

I like to set up this project. Here in Brazil is Very Used.

[@akinremiayodeji3134]

can I use a circular core

[@patipanhemuthai4402]

I have transformer but i need any frequency?

[@kacpreusz9911]

I need a adapter that is basically an USB OTG adapter but it has 2 USB output ports, can i get it from China?

[@davey2k12]

That makes no sense 😭😭😂😂 So you want to power something from your fone 😂😂 usb on the go is to connect external usb devices to the type c or micro usb device that's uses otg mainly fones or android box why 2 outputs should be inputs lol .......can get them anywhere

[@arnabroy5613]

Zener diode's value

[@piergiovannipioli7292]

110v each

[@wi_zeus6798]

Outputting a DC voltage isn't the best thing, some examples: this way only two of the four diodes in a full bridge rectifier see the full current, transformers act just like a resistor

[@mehulchawda8807]

I wish to talk with you And want to talk about Lower and higher voltage circuit cutoff in driver Can you help me . Thanks in advance

[@johnconrad5487]

Thanks for sharing. I watch many of your videos because you are one of the more knowledgeable DIYers on YT. The following is not meant as a criticism so bear with me on this. The gate wave forms are not good. the turn on is fast but the turn off is very very slow, almost 20uS. Why? This should not happen. Check the wave form of the input current. this can cause heating of the transistor die and hence transistor blows up. When one goes then all of them will go. Does the chip heat up after several minutes of use? If so then with those transistors perhaps you do need to add a gate driver. Imagine how it would work at 47KHz. I also noticed that the schematic says 47KHz but the wave forms period is about 63uS for both sides. the scope says 15.7KHz but that is for both edges so the frequency is around 8KHz. How does this work out for your primary side turns? At this frequency you need to have 15 Turns on each side. I think you are using 4 or 5 Turns, so you need to speed up the turn off in order to run at 47KHz. Secondly the SG3525 is a voltage mode controller and there is no mechanism for equalizing the Volt-seconds on each side of the transformer. The 3525 was made just before current mode control chips became available. If I want to make a low cost push-pull, I use a UC3842 chip (10 for $1) as the controller and apply its output to the 3525. Both chips are very cheap and with a little bit of additional circuitry you can make a reliable current mode controlled push-pull with current limiting and excellent voltage control. otherwise your transistors will blow up.

[@Basement-Science]

I think you are mostly right. Although if 6:55 shows a gate voltage, then that means the frequency 15.7kHz is the same as the output AC frequency since two such gate waveforms are necessary to create the entire AC wave. That is a very low frequency though. It might cause problems as well. I think you are correct that the very slow turn-off is a problem. It could even explain the strange exploding capacitor if both transistors were (partly) on at some point. Although I´m not sure which capacitor in the schematic it was that actually blew up. I don´t understand why this slow turn-off happens though. I would not call the SG3525 a very powerful gate driver, but apparently it can source and sink the same amount of current (absolute max +-500mA, steady state +-100mA). The combined 3,4 ohms of gate resistance per pair of mosfets is very low for that sort of gate driver though. Maybe the ic itself was already damaged from that? The peak gate drive current with those resistors could be as high as 4,4A for a short time.

[@truongnguyenquang1141]

can you give me this file pcb ?thanks

[@ezekiamwampashi4692]

It's good but you didn't show clearly steps to make it

[@learnandcreation3744]

Nice

[@electronic7979]

👍👍👍

[@cocas1000]

ty

[@nef003]

First comment!!! Great vid as always.

[@blackswan7292]

yea those caps are horrible. had a few go like that myself. threw them in the bin and bought panasonic.

[@MdRashed-ye5fp]

Complete circuit price Bangladesh

[@kolinevans9127]

Great video , I’m just learning about these control chips , looking at the data sheet I’m not sure that the SG2535 has any advantage in the non use of a gate driver over the TL494. both IC claim 500MA~ source to sink Actually the TL494 claims 500Ma per transistor and the SG3525 states 400Ma peak per drive transistor. So I think they are both very similar it would come down to personal preference on something like that Those fake mosfets are the dumps I’m sure I have a bucket of them here, makes scavenging worth while in some aspects and Television sets {both old and new} all the more desirable. Edit looking at the block diagram of the SG3525 I can see that the gate drive has two NPN with the output from the bridge of these , traditionally that could allow for a nicer gate drive in terms of on time etc, so perhaps it is better from that point of view. However I’d be inclined to use a built gate driver anyhow so no great loss and probably not a huge difference at lower frequency. Great video

[@minhphuc1283]

please. response does not work sg3525

[@tarunmandhan5224]

i need a circuit

[@batmitv7386]

Làm inverter bằng IC CD4047

[@ezekiamwampashi4692]

Becouse we need to prove

[@cringefds1366]

and if I want 25 khz

[@vijaykumar-fb6yp]

pcb layout

[@prayogi5396]

Jlc PCB not support u

[@HarpreetSingh-yo9ir]

Improper information regarding winding which is the main part. 1) Didn't mention the SWG or mm size of primary winding 2) Not clear how you did primary winding. Dont mind but if you literally wanna make such informative video so you should explain step by step information in order to mislead the viewers. 😐

[@EthicalLifeMedia]

I love you 😘

[@bobparquet]

what is the point of doing the "precise" and saying that the Chinese do bad things when instead you give limited information, such as the diameter of the wires for the primary and how many turns, in the downloaded file there is only the diagram and the file for the pcb can not open? It is not a beautiful thing .....

[@SuperVstech]

3:03 the girl setting the pcb plate appears to be blind...

[@вячеславкиндер-ю9ы]

Зачем ты пишешь по английскому. Только по русскому

[@swedensy]

Davaj u4itsa angliskij jazik.

[@bobparquet]

You have been buying Chinese stuff all your life, and you still do, but now why do you have to sell yours, they are no longer good, come on ..... !!!

[@عليالساعدي-ذ4ر]

Please translate to Arabic

[@DavePaul-cr9nx]

What is the model of this mini oscilloscope

[@arnabroy5613]

Can I use IGBT please reply mam

[@arnabroy5613]

Can I use IGBT please reply mam

[@arnabroy5613]

Can I use IGBT please reply mam

[@arnabroy5613]

Can I use IGBT please reply mam