{975} How to check, SMPS PWM IC switching or not?

Рет қаралды 27,003

Күн бұрын

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

Пікірлер: 117

@Devil_inside- 9 ай бұрын

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

@HaseebElectronics 9 ай бұрын

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

@HaseebElectronics 9 ай бұрын

@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

@Devil_inside- 9 ай бұрын

@@HaseebElectronics Glad to know sir

@sanashamil6647 9 ай бұрын

Schematic view not visible.. That makes issue

@HaseebElectronics 9 ай бұрын

@sanashamil6647 thanks for indicating point. next time i will try my best to take care

@francospagnolo1385 5 ай бұрын

👍Brilliant lesson, by repairing these power supplies yourself, in addition to saving money, you avoid generating waste.

@HaseebElectronics 5 ай бұрын

Thanks a lot for your encouraging words 💕

@ramaswamyranganathan9171 2 ай бұрын

Sir we cannot see your face at all. You explain very well.

@HaseebElectronics 2 ай бұрын

Sorry for that you can also see me here kzfaq.infoi_5nT82786w

@ramaswamyranganathan9171 2 ай бұрын

@@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

@vlastimilschindler3643 9 ай бұрын

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.

@rolanddejesus8685 9 ай бұрын

thank you very much sir for sharing your experience and knowledge...your the best teacher,God bless.

@HaseebElectronics 9 ай бұрын

You are most welcome

@Zhddwd60 9 ай бұрын

Awesome way to check IC switching there is no other best technic to easily understand.shukria bhai JazskAllah.

@HELLO-lw8rx 3 ай бұрын

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.

@HaseebElectronics 3 ай бұрын

السلام عليكم أخي العزيز. تحياتي القلبية وأطيب تمنياتي لكلماتك القيمة. الله يحفظك ويحفظك ويسعدك. رمضان مبارك

@electronium203 5 ай бұрын

🥇 for you . you are number 1 winer in guide and help and lern you are work classes top 🔝

@mosfettg6857 9 ай бұрын

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 👍

@pascalphase2556 9 ай бұрын

Very useful vidéo ! i like the multimeter on frequency mode to control switching action, very brilliant !

@7gurshaansingh6thmarigold58 9 ай бұрын

Very informative and helpful video Sir. It will be very useful for new beginners. Thanks Again. 🎉🎉

@osamakosara 9 ай бұрын

Ma shaa Allah may God bless you

@chinnarao326 9 ай бұрын

Resp Sir! Noce Class Sir. -- ChinnaRao Padeeu Andhrapradesh

@peachyblssm1702 9 ай бұрын

That is what are looking for and l learned a lot coming from you, thanks for sharing. Philippines

@HaseebElectronics 9 ай бұрын

Best regards It is my pleasure

@vijayakumarkumar9190 9 ай бұрын

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

@jaym5938 9 ай бұрын

Top level education!!

@gauripartapshanker9197 9 ай бұрын

Thank you for sharing your personal experience and knowledge. God bless you.

@anurasenarathna1703 9 ай бұрын

Very informative. Thank you very much.

@kaizen1071 9 ай бұрын

Emeğinize sağlık efendim. Sağolun varolun. Allah CC emanet olun.

@mahmoudfawzy4987 4 ай бұрын

excellant description ,my best greating for you

@HaseebElectronics 4 ай бұрын

thanks a lot

@MachiElectronicsLab 9 ай бұрын

Sir g your work great and nice thanks

@HaseebElectronics 9 ай бұрын

Thanks and welcome

@babayanjuadetunji1627 9 ай бұрын

great insight, nice video as usual

@HaseebElectronics 9 ай бұрын

best regards

@Efutureeletroniics 9 ай бұрын

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....

@user-vj5sb9fr6v 9 ай бұрын

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

@rabihnasr7228 9 ай бұрын

You are very smart master thank you i think the resolution of video is good not bad

@khanlala77777 9 ай бұрын

Nice sharing brother.

@HaseebElectronics 9 ай бұрын

Many many thanks dear brother

@alihammoud1248 6 ай бұрын

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

@giorgostexnikos6976 9 ай бұрын

excellent analysis.

@HaseebElectronics 9 ай бұрын

it is my pleasure

@technologisttv.repairwalay9493 6 ай бұрын

GOOD INFORMATION . YOUR STUDENT ... Amir M. Ashrafi

@pravinpadhiyar2 9 ай бұрын

Very nice video sir

@remediusfernandes1570 3 ай бұрын

Thanku sir🙏

@iofirm7454 8 ай бұрын

Amazing

@msbbadsha1456 9 ай бұрын

Very good video

@laxmimaninepal249 9 ай бұрын

Nice presentation 🙏

@electroniquepassion 9 ай бұрын

Thank you 👍😉👋

@jcsudeshchannel8224 9 ай бұрын

Good teaching thanks

@luusydney2140 9 ай бұрын

Tks ad.

@HaseebElectronics 9 ай бұрын

Welcome

@dr.qaisarabbas6127 9 ай бұрын

good job brother

@aboabdrahmanaziz8752 9 ай бұрын

جزاكم الله خيرا

@FishingNOutdoorFun 9 ай бұрын

nice info, Thanks for sharing

@lungisamayekiso736 9 ай бұрын

Thank's 😊

@ssmm3630 9 ай бұрын

very thanks

@W1RMD 9 ай бұрын

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!

@piusmakau9163 9 ай бұрын

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

@susantaatha6468 9 ай бұрын

Very nice

@electricalpowerengineering9332 Ай бұрын

Thank you sir

@HaseebElectronics Ай бұрын

you are most welcome

@jboy4real 9 ай бұрын

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

@maedotwondesen3471 9 ай бұрын

HI HASEEB UR LESSON IS AS ALWAYS IT IS GOOD BUT TODAYS SOUND IS NOT GOOD SOME HOW.KEEP IT UP BRO.FROM ETHIOPIA.

@xhonatankurti8515 9 ай бұрын

Mashallah ❤

@mr.singhmechanical6529 Ай бұрын

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

@afifthbe 9 ай бұрын

i'm learning

@nayanjagirdar8408 9 ай бұрын

Very nice teaching sir But Hindi video?

@HaseebElectronics 9 ай бұрын

most welcome brother yes today i recorded in Urdu today. it will be available after 2-3 days

@PCB_UNCLE_REPAIR_CENTER 9 ай бұрын

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 💖💖💖

@arunkumar-bh2dp 9 ай бұрын

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

@niroshanfernando2493 9 ай бұрын

Dear sir, I'm from srilanka, my kind request. Please explain function of ICE2QS03 PWM ic. It is using in LG Hometeater DH6631

@babayanjuadetunji1627 9 ай бұрын

please can you make a video about 3 phase SMPS circuits using UC38xx series

@theconquerorstv506 6 ай бұрын

Can you make practical smps using igbt. Thanks

@Diebog Ай бұрын

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

@kouiderz-39. 9 ай бұрын

وعليكم السلام ورحمة الله وبركاته

@technogamergaming1504 8 ай бұрын

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👍

@Ibanez25145 9 ай бұрын

Electronics technician...more idea ..

@warunakumara7671 3 ай бұрын

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

@raqeeburrehman5019 9 ай бұрын

AoA ,sir Short course online start kr dy new students basic sy sekh saky

@amilaernthavitarana1980 4 ай бұрын

Sir can you explain about FAN7602

@user-rx6vu4gq6h 9 ай бұрын

Can u talking about sg3525

@jboy4real 9 ай бұрын

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

@jboy4real 9 ай бұрын

Also how to ensure that the feedback pin and the comp pin of uc384xx is maintened at 1v

@muhammadyaseen8633 5 ай бұрын

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

@user-ys3dc5lo6x 5 ай бұрын

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?

@sanelleric6121 9 ай бұрын

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.

@Crystalservices 9 ай бұрын

Why is an isolation transformer required ?

@sanelleric6121 9 ай бұрын

So you're not referenced to earth.@@Crystalservices

@parthchudasama9750 9 ай бұрын

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

@user-vt2dq8cv3f 18 күн бұрын

Include lcd led tvs motherboard troubleshooting i will be gratiful. Zambia

@sultanscience4912 8 ай бұрын

Sir, please give me link for that schematick ,

@RajendraKumar-pm1ps 5 ай бұрын

Please send the link of Hindi/Urdu version of this video. Thank you.

@ephremkinfemichael6925 9 ай бұрын

Hi sir My smps pwm ic and mosfet it doesn't work .I can't to get what should I do ?

@bijoy067 2 ай бұрын

How to get that drawing sir

@EEE-Cml- 9 ай бұрын

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.

@electrical_engineer1 9 ай бұрын

Sir, urdu Lagrange in available??

@jboy4real 9 ай бұрын

Also kindly upload those diagrams on your paper because it is not clear to read.

@HaseebElectronics 9 ай бұрын

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@HaseebElectronics 9 ай бұрын

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@HaseebElectronics 9 ай бұрын

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@jboy4real 9 ай бұрын

@@HaseebElectronics I really appreciate

@jboy4real 9 ай бұрын

@@HaseebElectronics I really appreciate

@sajawalhussain6505 5 ай бұрын

Sir smps flactuate and fet become very hot what is the reason please reply

@HaseebElectronics 5 ай бұрын

Please check it's RCD snubber circuit MOSFET gate drive components Smoothing capacitor

@sajawalhussain6505 5 ай бұрын

@@HaseebElectronics sir all capacitor are ok here is 3842 14pin ic it's vcc become 14 volt and down

@sajawalhussain6505 5 ай бұрын

No resistor are fault I check it thoroughly.

@sajawalhussain6505 5 ай бұрын

@@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

@HaseebElectronics 5 ай бұрын

Might the be MOSFET is not properly matched. If the RDS on is high, it also causes the heating