{625} Why NTC or PTC Thermistor Damage in Inverter Welding Machine / Inverter AC Outdoor Unit

Why NTC or PTC Thermistor Damage in Inverter Welding Machine or Inverter AC Outdoor Unit, i discussed all the possibilities for blast / damage / failure of ntc / ptc thermistor.
Download Schemet of the Resanta inverter welding Machine SAI-230AD,Схема сварочного инвертора Ресанта САИ-230АД
bit.ly/3xASWkA
main indications symptoms for this problem are:-
1, input ac circuit breaker trips off
2. ntc or ptc thermistor damages /blasts / opens / when turning on
3. welding machine or inverter ac circuit not workign
3. it fails to turn on the machine
its possible reasons are:-
1. IGBT / MOSFET damaged / short circuit
2. Low voltage power supply MOSFET damaged
3. dc capacitor / smoothing capacitor internal short circuit
4. bypass relay failure (if the contact arm is damaged internally due to sparking or arcing and it cannot close the circuit)
Basics of NTC and PTC Thermistors
Thermistors - NTC & PTC - Thermal Resistors
Understanding How NTC & PTC Inrush Current Limiters Work
its basic use is in inrush current protection circuit / surge current protection circuit. it limits the initial charging current for the bulk capacitors, smoothing dc capacitors. when the dc rails charges up to a safe voltage range i.e. the dc capacitors attain its safe dc voltage at that time a bypass relays, bypasses this ntc or ptc thermistor by closing its contacts.
ntc or ptc are from the thermistor family
what is thermistor is material, its resistance changes with change in temperature
what is PTC is positive temperature coefficient thermistor, its resistance increases with increase in temperature
what is NTC is negative temperature coefficient thermistor, its resistance decreases with increase in temperature.
these both components are used in inrush current protection / current surge protection circuit.
#electronicscreators #inverterweldingmachine #inverterac
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Why NTC Thermistor Damage,
Why PTC Thermistor Damage,
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[@kahlid-ataya]

الله يعطيك الف عافية

[@HaseebElectronics]

الله يسلمك و یسعدک و یبارک فی عمرک

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باسلام ازتماشای ویدیوهای بسیار مفیدشما گاها استفاده کرده لذت میبرم .باتسکرهمکارشما

[@lemmywinx]

This was an excellent video - very well explained. I had a shorted capacitor that was heating up the thermistor rapidly - pretty much exactly as described. When I took a suspect IGBT off the board it tested faulty and the machine turned on. Superb, thank you!!

[@icemanb5065]

Absolutely impressed by your simple way explaining this PTC function and fail . I will definitely check the other components. Thanks a million.

[@HaseebElectronics]

it is my pleasure please accept my best regards ans special thanks for your beautiful encouraging comment

[@mariantapaj9808]

Perfektne vysvetlené ďakujem. Pozdravujem zo Slovenska

[@Jose-qc5sz]

Exelente video, retire los IGBT y la máquina encendió 💯

[@notreallyme7465]

Excellent as always. Thank you for all you do.

[@HaseebElectronics]

My pleasure!

[@Ianf1x]

Very well explained and easy to follow thank-you 😁

[@HaseebElectronics]

You’re welcome 😊

[@prkacro]

thanks for the video, very interesting.. greetings from Croatia!!

[@pishta-ux5qz]

Barak allahw fika brother

[@rawjusticeman3128]

Very informative video, I learned a lot of logical troubleshooting approach on SMPS from you thru your videos. Keep it up and you just earn another subscriber from me.

[@nechirak677]

جزاك الله خيرا شرح جميل جدا.

[@gauripartapshanker9197]

Very informative vedeo. All videos are very informative and nicely explained. God bless you. Thank u so much.

[@HaseebElectronics]

It's my pleasure

[@soloado5084]

I love this channel

[@cignaltoboso6160]

Thank sir , i learn a lot from your video

[@saumyagunawardana644]

Excellent explain well done, good luck 👍👍💕

[@HaseebElectronics]

thanks a lot

[@hullinstruments]

I’ve had to repair so many of these for clients. I normally only do industrial repair and metrology related stuff for big factories and research labs…… but a lot of Friends/acquaintances/customers have bought one of the smaller cheap machines to weld at home or to start learning. I’ve been impressed with the quality of even some of the cheapest machines. I think they are perfect for most people, it’s just important to remember a few A few things. If the machine does not have a proper System to monitor temperature and cut out… A lot of new people who are learning don’t understand about proper “duty cycle.” So the most important thing….. is that if you have a smaller cheap welder and it does not have MULTIPLE points of thermal monitoring and cut out, you can still do something about it and make it a lot safer. Just buy one of the cheap $5-$10 thermal cut out power/outlet adapters on eBay….. and plug it into that first so that if it does overheat, it will cut out before it starts to explode. Just place the thermistor/temperature sensor in the welder at the hottest place inside the welder which is usually somewhere around the heat sinks and bulk capacitors. Some of the ones available on eBay and Alibaba have two or three different temperature monitoring sensors that come with them. Giving you the ability to monitor the temperature at multiple places inside the machine. And then it will cut out automatically so that you don’t have to worry about constantly watching your duty cycle/welding time. Because if it doesn’t have a way to monitor the temperature and cut power, and you don’t watch the proper duty cycle and thermal management REALLY CLOSELY, it will make a very loud bang and smoke for a little bit. Hopefully it won’t take out half of the circuitry inside and it will be repairable but it’s just easier to monitor the temperature from the beginning

[@HaseebElectronics]

really great and valuable points for equipment safety actually, many manufacturers who don't care abut their brand name's reputation OR some cheaters produce low quality items with some known brand name, which causes the loss for the end user. it is a huge loss for equipment and it oversees the human safety otherwise, at production level, if all safeties and protections are incorporated, that will make it long life and safe

[@felixdiaz4438]

👍

[@felixdiaz4438]

@@HaseebElectronics 👍

[@sreekanth369]

Sir, Namaste So kind of You for Adding a Knowledgeable Video .. with Regards,,.. Sreekanth, Hyderabad- India

[@HaseebElectronics]

thanks a lot dear brother 💗

[@rahulpatelgujratahmedabad3497]

GOOD TICHING KARTE HO AP THANKS 👌🌹👌🌹😆😂😆

[@vijayakumarkumar9190]

Very good and useful information sir thanks for sharing this knowledge to us

[@HaseebElectronics]

So nice of you

[@bts-kv8wi]

Excellent and very useful sir

[@HaseebElectronics]

Thanks and welcome

[@AbdulMomenZargar60]

Subha Bakher Ho Janab Bhai Saab

[@HaseebElectronics]

thanks a lot bhai

[@abdessamadennaciri3281]

Very good video!!

[@HaseebElectronics]

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[@abuvictor4973]

Good video

[@garn6223]

Thank you very much sir 🙏🙏🙏

[@HaseebElectronics]

Most welcome dear ❣️

[@martindowney7915]

Good video, thanks mate

[@HaseebElectronics]

it is my pleasure

[@muhammadishtiaq24]

Excellent explain thanks for sharing this informative video bahi

[@HaseebElectronics]

Always welcome

[@miadaali9628]

وعليكم الف سلام -- شكرا جزيلا--

[@rayhanbd0]

informative video, many thanks sir :)

[@HaseebElectronics]

best regards

[@nidharshana4929]

Very useful video sir

[@HaseebElectronics]

most welcome

[@osaretininnocentifaluyi7485]

Great teacher, I have been watching your tutorials for long and I have learnt from you. Please sir what makes igbt to burnt when replaced in welding machine

[@saniibrahim1002]

Great jobs,

[@HaseebElectronics]

best regards

[@asmafoodvlogs9954]

Wow amazing beautiful shirng dear friend 🌹👍

[@kmhovlog6185]

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[@HaseebElectronics]

thanks a lot

[@electroniquepassion]

Good topic 👍👍👋👋

[@HaseebElectronics]

best regards and lovely thanks dear friend

[@lalabish5470]

Sir well job keep it up ❤

[@HaseebElectronics]

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Thank you a lot of amazing and wonderful 💐 please please

[@HaseebElectronics]

Thanks and welcome

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[@HaseebElectronics]

Most welcome

[@HarlavanisPanagiotis]

Wonderful video dear friend!!!

[@HaseebElectronics]

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[@shafi.j]

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[@HaseebElectronics]

best regards

[@kmhovlog6185]

Have a nice day best job

[@HaseebElectronics]

بہت شکریہ

[@fernandonino6869]

thanks! ..please do more videos about welding machines repairs

[@HaseebElectronics]

sure i will try to do more videos

[@patvaldrez7355]

❤

[@felixdiaz4438]

👍

[@FishingNOutdoorFun]

beauatiful sharing

[@HaseebElectronics]

Thank you so much 🙂

[@kitchenvirsa4696]

Good sharing bai

[@HaseebElectronics]

Many many thanks dear sister

[@mansirrabiu7412]

Mashallah

[@HaseebElectronics]

الحمدللہ

[@user-yc8ww5ur6j]

I hope you will translate all the videos. For everyone to understand

[@HaseebElectronics]

I will try to add translation ان شاءالله

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Check haseeb electronic urdu

[@JunaidKhan-so1fh]

i wait for your video

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yes brother i will arrange it very soon. إن شــاء الله

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May Allah Pak bless you جزاک اللّٰه

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ما شاء الله

[@HaseebElectronics]

thanks a lot

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👌👌👌👍

[@HaseebElectronics]

best regards

[@hima4all]

Salam alykom haseeb thanks for the videos, i have a problem once i start welding i see the first spark and yellow light turn on ( over heat protection) the machine had a faulty igbt i changed them and fan is working again. Can you point out how to test the overheat circuit or do you have a video for it? When i restart the yellow lights goes off bit again first spark then it turns on.

[@limlejn]

Hello friend, what value of NTC thermistor for welding inverter is used?

[@user-fj6pf8df7m]

Hi Mr , I have a question ، i placed an ntc thermistor in a wheatstone bridge , and it gave me a totally non linear curve including a negative voltage ,it goes like 0°=4V , 10°= 3.5V , 20°= 1.5V , 40°=0.5V , 60°= -0.5V , 80°= -1V , 100°= -1.2V So how can I make it linear to complete the process of display it and so on .

[@user-tk1tl2zn3v]

Ok❤❤❤❤❤iran

[@blasvega2]

Great video! But where can I find those schematics?

[@izzzzzz6]

Excellent explanation. So if low voltage supply is not working then capacitor will not reach full charge, or if NTC or PTC blows open nothing will work, if ntc or ptc go short then other parts will be damaged.

[@HaseebElectronics]

If low voltage power supply stops functioning The bypass relay will not turn on and all the current will pass through ntc / ptc Which will cause to blast ptc (if there is ptc then its resistance will increase while the resistance of ntc will decrease with rise in temperature) In both cases the ptc / ntc may damage In upcoming sereis of welding machine repair i will try to cover all possibilities in full details

[@eternity97]

Excellent Thankyou Are you engineer?

[@HaseebElectronics]

Yes I am

[@JunaidKhan-so1fh]

ماشاءاللّٰه sir Sir 3 phase make video over inverter

[@HaseebElectronics]

okay brother i will see it

[@jboy4real]

Good tutorial thanks for sharing but I have a challenge on how to calculate the value of the capacitor usually placed between the heat sink of every full bridge inverter and what is their function and some times you see four of them kindly explain in detail

[@jboy4real]

@@HaseebElectronics okay sir please check I really need and that of half bridge inverter calculation

[@jboy4real]

@@HaseebElectronics sir I have another challenge on how to select the value of NTC thermistor and also when do we use either PT. or NTC thermistor. Thanks

[@isaactweneboa6]

Please what to trouble shoot if voltage is not getting through from bridge rectifier

[@Madara-z7k]

Please make video on power supply why my DVDsony DAV DZ 151kb power supply is given over voltage on one pin in place of 6 i have found 8 .2 volt and when I connect connector with mother board my 3.3 volt is missing and voltage of 6 volt which is 9 volt in my MOSFET is drop half

[@dipakbhalodia7155]

Hasseb भाई हिन्दी मे भी वीडियो डाला करे जो आपकी इंग्लिश chennal मे है वो सारे

[@HaseebElectronics]

हां भाई हर वीडियो शेयर कर रहा हूं, कोशिश करूंगा कि रोज दोपहर 1:00 बजे शेयर करूं

[@pishta-ux5qz]

Assalamualaikum sir. I have an inverter welding machine when turning on after a while the ptc heats up and the machine turns off then keeps turning on and off. I checked most parts of the circuit I didnt find any short circuit niether the mosfet nor IGBTs. I dont know what is the reason for this heat up ptc( 115 ohm ). I replaced the relay but same. The bypass circuit is before the bridge rectifire it works properly. The machine output is ok when turning on. I tried to replace this ptc with ntc it worked properly but after several time turning in and off the ntc blown up Sir if you can help

[@farhadeletronics5685]

Sir sine wave inverter kistarase Kam karte he details video chahiye

[@michaelpelumivictor5711]

Hello sir, pls can I get this circuit diagram?

[@electrolatif]

I have mechanic icharge 8 max not working, i find NTC burn, i dont know the model number i can replace! How i can find correct NTC?

[@abuvictor4973]

Sir please I have a question what will be the fault of if you want to plug inverter welding in electric it will bridge immediately

[@dhanuskalankathilaka]

😊👍🙏

[@HaseebElectronics]

it is my pleasure

[@user-vt2dq8cv3f]

Led lcd power supply 12v output line giving 24v insteady why? Zambia

[@fareekadan]

How do order the smd transistor A4GG ?

[@kaizen1071]

🇹🇷Es Selamun aleykum ve rahmetullahu ve beberakatuhu. brother.🇵🇰🇵🇰🇵🇰

[@HaseebElectronics]

وعليكم السلام ورحمة الله وبركاته

[@ARA-HOUSE]

Lk 56 brother 👍👍

[@HaseebElectronics]

thanks a lot dear sister

[@megamaxpower2890]

Asslam o Alikum Sir Any video available (5000W inverter detail Circuit) or any docx file. Plz Kindly I need 5000W inverter circuit video or docx file

[@safuddinsardharwalla980]

Assalamo alaykum warahmatullah alaykum,sir once have send me ackt diagram of Acer monitor to me i lost it pls make me study about fault finding procedure as well with ckt daigram.

[@user-gx2yd8hy5u]

Hi man i need your paper ..i mean your welding diagram . Can you converted to the pdf file . And share it Pls

[@TheMrjogas]

Sub. 👍. My ntc green is 3 ohm and on caps only 160v .what issue ntc?

[@TheMrjogas]

220v system

[@HaseebElectronics]

it depends on ambient temerature, current rating, chip size, capacitor size

[@megamaxpower2890]

Plz Sir Kindly share the Circuit file

[@muthanaaljumaily]

السلام عليكم هل يمككنني التواصل معك؟

[@HaseebElectronics]

و عليكم سلام و رحمة الله و بركاته. كل عام و أنتم بخير. نعم ، رقم واتساب 00962791161084 و gmail هو ashraf4ta4

[@muthanaaljumaily]

@@HaseebElectronics وانتم بالف خير عيد سعيد علينا و عليكم

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سلام استاد. آیا می‌شود که این مدار را قرار بزارین تا بشود ما هم داشته باشیم. همان شماتیک ماشین جوش را می‌گویم ممنونم استاد بزرگ

[@HaseebElectronics]

السلام عليكم ورحمة ٱلله وبركاته بله برادر من نمودار را اضافه کردم، لینک در توضیحات ویدیو است. لطفا توضیحات ویدیو را بررسی کنید و آن را دانلود کنید

[@nimaesmaeil9318]

@@HaseebElectronics سلام استاد عزیز. نتوانستم یافت کنم لینک دانلود را. آیا من اشتباه میکنم؟ لطفا مشخص کنید کدام لینک هست. منظور من شماتیکی هست که در ویدیو دیده شده است. بسیار ممنون از اینکه به ببیندگان خود پاسخ گذار هستین

[@HaseebElectronics]

bit.ly/3xASWkA

[@HaseebElectronics]

لطفا اگر دانلود کردید جواب بدید

[@nimaesmaeil9318]

@@HaseebElectronics سلام استاد. بله توانستم دریافت بگیرم . خیلی توجه دارین . ممنونم

[@funkyallabe3316]

Hello Sir I'm your follower of welding machine reaper can you send of schematic diagram of yamato MMA 300 and the others machine in my email

[@NASEEMAHMAD-le6yw]

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[@michaelpelumivictor5711]

Hello sir, pls can I get this circuit diagram?