{779} Comparison between UC3842, UC3843, UC3844, UC3845 ICs
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- Опубліковано 5 сер 2024
- in this video {779} Comparison between UC3842, UC3843, UC3844, UC3845 ICs, i compared practically different parameters between UC3842, KA3842, UC3843, KA3843, UC3844, KA3844, UC3845, KA3845 series current mode smps PWM controller ics. i checked frequency, duty cycle, vcc startup voltage. UC384x PWM Controller IC Test Circuit. uc3842, uc3842, uc3844, uc3845, ka3842, ka383, ka3845, 1842, 1843, 1844, 1845, 2842, 2843, 2844, 2845 is a family of pwm controller ics, which is used in different pwm controller topologies, as dcm flyback, ccm flyback, boost, buck and feed forward converter topologies. i made this test circuit i to test and verify the ic using oscilloscope and multimeter. we can check its pwm signal on dso and digital multimeter, and duty cycle as well.
download uc3842 3843 3844 3845 ic test circuit diagram
bit.ly/3XtcAKb
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00:00 UC3842 replacement
00:25 how to measure pwm signal with dso & multimeter
01:06 how to test vcc startup voltage of pwm controller ic
01:41 how to test uc3842 / ka3842
03:05 how to calculate switching frequency for uc3842, uc3843
03:37 how to test uc3843 / ka3843 pwm controller ic
05:32 how to test uc3844 /ka3844 ic
08:10 how to test uc3845 / ka3845 smps pwm ic - Наука та технологія
Very very informative and knowledgeable vedeo. No body can't teach and explain in this way except you. Thank u very much. God bless you and entire family. Thank u again,
Thanks and welcome
Thank you for your valuable service! Great job explaining! I went from knowing NOTHING about power electronics and SMPS's, to being able to at least diagnose where the problem is. Almost ALL electronics in the world use SMPS's now, so that makes this one of the most practical electronic channels on UA-cam. Especially now, with shortages in the world, a broken machine could cost $$$$ each hour it's down! Can't just throw it all in the garbage like the old days! Have a great day sir!
best regards and special thanks for your valuable words
yes you are right, these days the SMPS is the main item in modern electronics and it is a biggest headache. so that is the reason still my focus is on power supplies. other all digital electronics and analog electronics is very simple. that can be diagnosed very simply and easily
Thank you for the comparisons , something I would of liked to done myself but you save me the time and helped me understand the differences between them. 👍
You are welcome!
and your encouraging words are valuable for me. stay blessed
Thank you so much.Your videos are very informative and useful .Hugs from Brazil!!
You are so welcome!
I have loved the way you explained it.
Thanks for using English.
It's my pleasure
Excellent video dear friend, have a blessed Sunday 😊
BEST REGARDS
HAVE A NICE SUNDAY
Salam Aleikum. Again a very clear and informative video. Thanks and may God bless you.
thanks a lot Dear brother
Stay blessed
It's Great video. Thank you Sir for distinguish these ic's working....
Most welcome
Congratulations excellent practice video, greetings from Bolivia
Many thanks for you , great explanation ❤❤❤
You are welcome!
Thank you! 👍
Best regards 💝
Emeğine sağlık kardeşim. Güzel bir içerik olmuş.
saygılar ve özel teşekkürler
Allah korusun
Excellent Weldon helpful video keep
Many many thanks
With fully knowledge
MashaAllah
Thanks
Sir kindly E-Vehicle Charger, Controller ki ek series banaye.. We need sir.. Because knowledge given by ur end is very nice not comparable not beatable. We always oblivious for that. 🙏🙏🇮🇳🇮🇳
Very good and useful information sir thanks for sharing this knowledge to us
best regards
Very informative and useful
wow really great
it is my pleasure
best regards
Good Morning Brother & All The Best
good morning dear brother
Sir,
Excellent
it is my pleasure
Thanks very good ❤
best regards and special thanks
Great thanks sir..if possible,it will be great to make a video about PFC concept and it's ICs
Very good thank you for adding persian language👍
You are welcome 😊
Thanks very much sir for sharing...
best regards and special thanks
Thank you dude! Subscribe to you channel.
most welcome
Thank you brother mohammad I apresheat your effort gad pless you
Thanks and welcome
stay blessed dear brother
Good sharing dear brother
Many many thanks
Excellent.
it is my pleasure
Very easy explanation for beginners like me.
So informative Sir, as always something nice to learn. Thank you. So I guess it's best to replace with the same types, instead of modifying any circuit.
Excellent information
best regards and special thanks
Thanks you
Excellent information 👍👏👋
it is my pleasure
Thank for your time and effort to explain the most important information
If you dont mind I want to ask about mosfet drived by utc3842 sometimes we find diode and low resistance in parallel to feed signal to mosfet gate the question is how that work and what the benefit of that
Thank you again
Great explination. I use UC3843 in my 12V to 300V boost converter. It works very well.
Can you do a video explaining the compensation please.
👌👌👌👍
it is my pleasure
Very nice
most welcome
Assalamualaikum very good thanks
it is my pleasure
❤
thanks a lot
Slmz, Please do a video on short circuits, I understand electronic short circuits, to a certain level, but it becomes tricky with smd components especially with capacitors. Are all caps one side ground, and how much resistance or voltage drop exactly is a short. Some ppl test in diode mode, red on ground, some test diode mode black on ground, some test in resistance mode? Which is the correct method?
👍
it is my pleasure
Why would you use a UC3844 instead of a UC3842? its half frequency, half duty, but can't you just use different cap/resistor values to halve the frequency of the UC3842 while maintaining it's 100% duty adjustment?
good afternoon sir, I just tried make a simple 17vdc power supply for UC3842, by using resistor 220k/3watt and zener 17v/5watt (IN5354B), and capasitor 220uf/35v, taken directly from the main power outlet and change it to vdc (about 310 vdc), but it does not work well, the voltage at the zener point is not stable, but if not connected to the UC3842 then it is fine, stable at about 18.1 vdc, please advise me how to make it stable? thanks a lot sir, cheers.
❤❤❤❤❤🎉🎉
🙌Hello Sir! i'm learning a lot from you, thank you!
Sir, can you please explain the E247691 (EAX64604501) LG TV POWER SUPPLY?
It has 3 volt but no other output(12v, 24v..) even turned on the switch. What could be the reason? Please!
Dear Sir ..Thank you very much for your valuable explanations.
Sir.. Can i replace UC2844 with UC3844?
One of VFD power supply with UC2844. But our market not available 2844. Then I was replace 3844 but now output on and off only.
Olá amigo sou do Brasil! Fiz um conversor bucha boost aqui está funcionando bem com a entrada de 36v saída de 18v como faço para alimentar mais a tenção na saída?
Assalamualaikum bhaiya....
Bhaiya I'm very confused in positive , negative and ground what is defference amoung it.....I've been failed to find answer on whole UA-cam.....
Bhaiya if you read this comment plz plz
Clear all this doubt.....
Like what is defference.....
+12, -12, and what is ground.....???
Q¹....What potential deference will be between +12 and ground , -12 and ground, +12 and -12......?
Plz plz plz plz make a long videos with deep detail. ....🙏🙏🙏🙏🙏
... . . . .. God bless u
ua-cam.com/video/U3oxegO77Ec/v-deo.html
Hello sir ,I need laptop charger 65w and 90w load tester circuit do you have?
Now can I replace uc3842 with uc3843 without replace the ct/rt?
RT/CT remains same for oscillator frequency
ola eu montei um conversor buck aqui so que o marximo de tensão que eu consegui na saida foi de 20v ja mudei a frequência e nada! poderia me dar uma dica para alimentar a tensão de 20v para ate 30v na saida
Sir main ne boost converter bnaya 3842 3843 44 45 sub ko chek kiya 16 volt se start ho rahi hain koi waja btain sir
Uc3842-43-44-45 In these series witch one ic is best for buck converter and pls make next video on buck converter with one of this ic thanks in advance
I want to be like you in electronics
wish you best of luck
i use 3843 for my buck boost converter
yes that is awesome
Can I replace UC3842AM with UC3842B
Sir 4612 mosfet ke alternet option kuch he
Welding mechine me tha
Smd he
Your is 8 months ago so I hope you reply my message as possible UC 3843 can i replace this in UC 3844 or UC 3842
Apakah ic pwm 3845 bisa diganti dengan ic 3843
3844هل تشتغل من 16 فولت فأكثر
Haseeb sahib please share 10 ampare china charger having (analog ampare meter)schematic diagram.thanks
उर्दू chennal मे भी वीडियो to दिजीए जनाब English chennal मे to आप रेगुलर डालते हो
yes brother i am sharing all my videos on urdu channel as well
I lost homage inverter schematic with cpu card and 10 amp china charger due to Laptop HD corrupted.u/s.
I hope that you pleased provide me.thanks