{975} How to check, SMPS PWM IC switching or not?
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- เผยแพร่เมื่อ 20 มิ.ย. 2024
- in this video number {975} How to check, SMPS PWM IC switching or not? i demonstrated how we can test/ check / verify any PWM controller IC (pulse width modulation controller ic) in smps switch mode power supply using multimeter. i discussed (UC1842 / UC2842 / UC3842 / UC1843, / UC2843 / UC3843 / UC1844 / UC2844 / UC3844 / UC1845 / UC2844 / UC3844 / KA1842 / KA2842 / KA3842 / KA1843, / KA2843 / KA3843 / KA1844 / KA2844 / KA3844 / KA1845 / KA2844 / KA3844. when vcc voltage are applied to its vcc pin number 7 and return to pin 5. it produces 5 volt reference voltage from pin number 8. pin 4 is RT / CT. pin 4 also can be configured with any external clock signal. it have 2 shutdown techniques.
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00:00 how to test smps pwm controller ic with multimeter
01:02 UC1842, UC1843, UC1844, UC1845 working vcc voltage
01:35 UC1842, UC1843, UC1844, UC1845 duty cycle
02:24 how UC384X or KA384X ic works in smps circuit
03:29 how vcc startup circuit works in UC384X or KA384X ics
03:43 what is OLP, UVLO, VCC threshold
04:23 why vcc voltage fluctuate in smps
07:12 current sense circuit in UC384X or KA384X ic
07:51 shutdown / protection techniques in UC384X or KA384X ic
10:22 What id RT / CT in UC384X or KA384X ic
11:40 why smps has fluctuation on vcc capacitor
14:11 UC384X or KA384X ic driving push pull dc to dc converter
16:06 how to test vcc voltage in UC384X or KA384X ic
18:05 how to test reference voltage in UC384X or KA384X ic
19:30 how to test current sense signal in UC384X or KA384X ic
20:54 how to check that smps is switching or not?
23:16 how to test switching frequency SMPS in UC384X or KA384X ic using digital multimeter - วิทยาศาสตร์และเทคโนโลยี
Your videos are always very infomative but your video quality is very poor, I think the ambient light should be increased for video and the camera quality should also be improved a bit
first of all. i am sorry for inconvenience
secondly, i am really thankful for indicating a valuable point. and i will try my best to rectify these issue and will try my best to improve video quality
please accept my best regards
@slotmachines756. This is also my observation
I am already planning to improve video quality to 4k instead of hd video
And am also idea to enhance light
@@HaseebElectronics Glad to know sir
Schematic view not visible.. That makes issue
@sanashamil6647 thanks for indicating point. next time i will try my best to take care
👍Brilliant lesson, by repairing these power supplies yourself, in addition to saving money, you avoid generating waste.
Thanks a lot for your encouraging words 💕
Awesome way to check IC switching there is no other best technic to easily understand.shukria bhai JazskAllah.
Finally this kind of detailed videos I would like to see more of them in the future. Clear, detailed and very helpful. I would like to see you to use the oscilloscope as you mentioned also with clear instruction where to put what probe and how to set the scope. Thank you.
Ma shaa Allah may God bless you
🥇 for you .
you are number 1 winer in guide and help and lern
you are work classes top 🔝
You are a persistent, generous and extremely ambitious person.
Therefore, you deserve all the respect and appreciation from me and all the followers of your fine channel.
Thank you.
السلام عليكم أخي العزيز. تحياتي القلبية وأطيب تمنياتي لكلماتك القيمة. الله يحفظك ويحفظك ويسعدك. رمضان مبارك
thank you very much sir for sharing your experience and knowledge...your the best teacher,God bless.
You are most welcome
GOOD INFORMATION . YOUR STUDENT ... Amir M. Ashrafi
excellant description ,my best greating for you
thanks a lot
Very informative and helpful video Sir. It will be very useful for new beginners. Thanks Again. 🎉🎉
Resp Sir! Noce Class Sir. -- ChinnaRao Padeeu Andhrapradesh
Very good and useful information sir thanks for sharing this knowledge to us
Nice sharing brother.
Many many thanks dear brother
Sir we cannot see your face at all. You explain very well.
Sorry for that
you can also see me here th-cam.com/users/livei_5nT82786w
@@HaseebElectronics sir I have recently developed SMPS 12v 10a working from 90v to 265v with uc3843. It is working good. From you only I gained sufficient knowledge. Thanks
Top level education!!
Emeğinize sağlık efendim. Sağolun varolun. Allah CC emanet olun.
Very useful vidéo ! i like the multimeter on frequency mode to control switching action, very brilliant !
great video,a lot to learn with ref voltage to sensor and snubber circuit to transistor ,i will watch this a few times to take it all in. thank you 👍
Very informative. Thank you very much.
That is what are looking for and l learned a lot coming from you, thanks for sharing. Philippines
Best regards
It is my pleasure
great insight, nice video as usual
best regards
You are a God gift for the best teacher (electronic) for me.thank you sir(guruji) ,iam from india,sir please explain ncp1397AG pwm driver ic....
The you my brother mohammad it very useful video and it very good method to test this series of this type Ices thank again for your efforts gad please you
Thank you for sharing your personal experience and knowledge. God bless you.
Very nice video sir
Excellent as always! Very informative. There are a lot of variations in meters and I've notice some of mine don't like switch mode frequencies. You've got mean concerned now about the gate signal and damaging the mosfet with the input capacitance of the meter. Is there a fail safe way to check this? I've noticed you check it at the output of the ic, so is it safer to check the signal there because of the resistor before the gate, of can we put a resistor and/ or a capacitor in series with the meter lead to avoid damage to the mosfet? I don't often ask, but I think it would be worth doing a video on this. Thank you and have a great day!
Amazing
excellent analysis.
it is my pleasure
nice info, Thanks for sharing
Good teaching thanks
جزاك الله كل خير
أرجو أن تشرح طريقة عمل وإختبار LM358 المتواجدة في دوائرشحن البطاريات وألف شكر لمجهودك الرائع. وأرجوالله أن يكتب لك الأجر والثواب في نشر هذا العلم
You are very smart master thank you i think the resolution of video is good not bad
Very good video
Thanku sir🙏
Sir g your work great and nice thanks
Thanks and welcome
Thank you 👍😉👋
Nice presentation 🙏
جزاكم الله خيرا
This is well elaborated thank so much.
My question can supply IC 3843 more than 30v because it has an internal 34v zener diode. Thanks
good job brother
Very nice
very thanks
Thank's 😊
Tks ad.
Welcome
I love your videos Sir . Keep it up 💪. Can you please share with me the details of your big screen multimeter so that I can get exactly the same type because I think It's great
Mashallah ❤
i'm learning
Thank you sir
you are most welcome
HI HASEEB UR LESSON IS AS ALWAYS IT IS GOOD BUT TODAYS SOUND IS NOT GOOD SOME HOW.KEEP IT UP BRO.FROM ETHIOPIA.
thank you for your valuable information. i have a one doubt. we have one ups in icu central monitor and it is not working . when i was open to check inside the ups. battery is 4v only but battery voltage is 12v. board looks like good no burning or defective component. when i connect ac power, cumming sound come inside transformer. after removing battery the cumming sound is disable. is there any ideal about this
Just put ur multimeter positive prob on switching mosfet and see if voltage is present and study then switching hot genrated
If the voltage look like not have on mosfet switching is working
Can you make practical smps using igbt. Thanks
please can you make a video about 3 phase SMPS circuits using UC38xx series
Dear sir, I'm from srilanka, my kind request. Please explain function of ICE2QS03 PWM ic. It is using in LG Hometeater DH6631
Very nice teaching sir
But Hindi video?
most welcome brother
yes today i recorded in Urdu today. it will be available after 2-3 days
Can u talking about sg3525
Sir can you explain about FAN7602
How do I do this test on an FA5304? I have a 14.4v nicad charger that has an amps im trying to fix. Thanks
AoA ,sir Short course online start kr dy new students basic sy sekh saky
SIR THANK U FOR THE VIDEO , IAM WARUNA FROM SRILANKA , SIR WTS THE IC DATA SHEET NUMBER THAT UR SHOWING IN THIS VIDEO , SIR AT THE FIRST STAGE WAS THE PWM IC PARTIALLY BIASED WHEN IT START SWITCHING ? IF SO CAN A PARTIALLY BIASED PWM IC CAN DRIVE A MOSFET ?AND ALSO SIR WHEN THE CAPACITOR IS CHARGING PWM IC DOESNT GET ITS VCC ISNT IT SIR , SO CAN U SHOW WTS THE DISCHARGING PATH OF THE CAPACITOR ? SIR IN THIS PWM IC IT TAKE FEED BACK NOT FROM SECONDARY SIDE BUT FROM PRIMARY SIDE OF SMPS WHY ? THANK U SIR PLZ EXPLAIN
Assalamualaikum Bhaiya....
Plz you can explain how does an ac non polar capacitor work in motor Or ceiling fan....
And why it changes its rotation direction
When we interchange starting and running terminals.....
I know how it works it's only superficial
I wanna learn his deep working
Plz plz explain
in hindi with deep details..
If you read this comment...
. . .. . .Have a nice day 💖💖💖
Electronics technician...more idea ..
I noticed that most of the uc384xxx the comp pin is connected to pin 2 through resistor and capacitor and the opto-coupler is connected to comp pin to ground. Kindly explain the reason for that and how to calculate the resistor and capacitor value for the compensation
Aslamoalakum gee Sir gee aap kesy Hein sub theek shukr alhamdulillah
Sir gee ye btain ke aam labtop Supply se Kisi amplifier bke leay dual Supply kesy bna sakty hein plzz sir help me
Sir, please give me link for that schematick ,
Also how to ensure that the feedback pin and the comp pin of uc384xx is maintened at 1v
Sir in flood lights thare is smps but it doesn't have optocoupler for voltage control. As per our led light requirements voltage auto adgest. So please explain how this smps auto adgest the voltage? And without optocoupler how it possible. please make video on this topic
Sir can you make one vidio on vfd reparing 972 vidio series make same all part wish explain stap by Stap all section testing processes thanx
Same laptop reparing vidio series make all sections test step by Stap and all generation mother board power plan explain thanks in advance👍
وعليكم السلام ورحمة الله وبركاته
How to get that drawing sir
In dual output smps 24v and 12v.. Only 24v is working.. Ic used in dc side is mp1591.how to make sure the ic Switching ir not?
Sir, urdu Lagrange in available??
Hi sir My smps pwm ic and mosfet it doesn't work .I can't to get what should I do ?
Please send the link of Hindi/Urdu version of this video. Thank you.
I'd only add one thing to your warning which comes on the very beginning on every video of yours is "Always use isolation transformer, during tests on switching power supply", but, that's just me. If they never do any experiment, they can't get ever any practical experience.
Why is an isolation transformer required ?
So you're not referenced to earth.@@Crystalservices
Sir smps flactuate and fet become very hot what is the reason please reply
Please check it's RCD snubber circuit
MOSFET gate drive components
Smoothing capacitor
@@HaseebElectronics sir all capacitor are ok here is 3842 14pin ic it's vcc become 14 volt and down
No resistor are fault I check it thoroughly.
@@HaseebElectronics sir I have check all capacitor and resistor all are ok optocuppler may be bad or not sir because with meter optocuppler value is good
Might the be MOSFET is not properly matched. If the RDS on is high, it also causes the heating
First of all, thank you. We follow you from distant lands. You are someone the world knows. But the sound quality of the video broadcast is very bad. Can't you get a quality microphone? I recommend you use a new and high-quality microphone.
Also kindly upload those diagrams on your paper because it is not clear to read.
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@@HaseebElectronics I really appreciate
@@HaseebElectronics I really appreciate
💯❤🩹