sir, if it reduce the resistance when the temperature rises, doestn it allow the current spike to go through the circuit? how it protect the circuit if that happen?
great point. when it is cold, at that time it provides resistance and that is the start up time of the capacitor charging when capacitor is charged at a specific level, after that there is not need to limit the current until that time the substrate temperature of the thermistor is increased and its resistance is dropped to allow full rated current (its negligible resistance value remains in circuit, but that doesn't effect on the circuit efficiency)
I am grateful to you for the very valuable information you provided about NTC and NTC circuit. Electronics becomes more enjoyable with you. Allah bless you. Best regards...
NTC ilk baştaki yoğun akım çekmeyi dengelemek için görev alır. Bir başka yoğun akım çekima kadar görev almaz değil mi. Sürekli dengeleme mi yapar yoksa?
Dear Sir I need your help please. I rewinded the secondary winding of microwave oven transformer to put it in a linear power supply i want to make with a buck converter circuit . Now i am confused about the current rush , is it necessary to put ntc resistor before after the transformer , or after the bridge rectifier? Best regards ❤
Sir I have a really urgent question In my SMPS power supply 24v 10A working properly but when I turn on the smps just after the indicator light is off when smps is turned off it doesn't work But after a min it works normal until I turn on off simultaneously When repairing i noticed when my multimeter probe touch one 2sc1815 middle pin (tl494 c1) it turns on all of a sudden but and the cycle continues what should I do sir 🙏🙏
Broken solder joints or cracks in circuit board? Checking the ic with a meter and pushing down on the ic pins can reveal a loose solder joint on the ic where it is soldered onto the circuit board. If you can't see cracks around the pins with a magnifying glass, try to soldering around all the pins anyway and it might fix cracks in the solder. Be very careful when checking with a meter. VERY easy to short between pins with the meter test leads and destroy the ic! A short (bad capacitor or mosfet) or other problem will cause a fault and the ic will go into a loop and keep trying to reset itself. Check output voltage with a volt meter and see if there's a fluctuation in output voltage and that may show that. Watch Haseeb's MANY smps videos and he'll show this. Good Luck!
hi Sir can you please make a video on smps that use single transitor to oscillate like cellphone chargers , i would really appreciater as i don't understand how the transistor perform self oscillation.
sir, if it reduce the resistance when the temperature rises, doestn it allow the current spike to go through the circuit? how it protect the circuit if that happen?
great point.
when it is cold, at that time it provides resistance and that is the start up time of the capacitor charging
when capacitor is charged at a specific level, after that there is not need to limit the current
until that time the substrate temperature of the thermistor is increased and its resistance is dropped to allow full rated current
(its negligible resistance value remains in circuit, but that doesn't effect on the circuit efficiency)
Excellent keep sharing
I am grateful to you for the very valuable information you provided about NTC and NTC circuit. Electronics becomes more enjoyable with you. Allah bless you. Best regards...
Senden çok şey öğreniyorum. Allah sana sağlık ve güzel bilgi versin.
Very good and useful information sir thanks for sharing this knowledge to us
Nice sir now i can fix any power supply because of your teaching sir thanks a lot… I’m a automotive mechanic and electronics
Hobbyist
Thanks for this help full video
Informative vedeo vedeo. Thank you so much. God bless you.
Very good video content
الله ينور على حضرتك
عندى سوال بالنسبه كارته الانفرتر AC ممكن شرح لفكره عملها وطريقه تتبع اعطالها
Very good sir
Very nice video sir
Very very good
Thank you sir for excellent explanation.🙏🏻
Very nice video sir thanks..
Thanks for the video sir
وعلیکم السلام ماشاءاللّٰه
👌👌👌👌👌👌
NTC ilk baştaki yoğun akım çekmeyi dengelemek için görev alır. Bir başka yoğun akım çekima kadar görev almaz değil mi. Sürekli dengeleme mi yapar yoksa?
nice
Sir how do I know if this thermistor is not functioning? Thanks in advance for your kind reply. Thanks again.
in that case the fuse will burn out immediately after connecting power
Thanks 🙏
NTC hep aynı ısıda hep aynı direnç kaybını mı yaşar yoksa farklı türleri var mıdır?😊
Dear Sir I need your help please.
I rewinded the secondary winding of microwave oven transformer to put it in a linear power supply i want to make with a buck converter circuit .
Now i am confused about the current rush , is it necessary to put ntc resistor before after the transformer , or after the bridge rectifier?
Best regards ❤
The ntc have polarity? And is normal to have continuity mode?
hi Sir can you please do a video on smps thats has multiple output in the secondary i don't undesrtand that part of negative voltage on the output
Sir, please add a P10 display board hard ware servicing. I search this type video. I canot get a proper one
Good thanks
Hello Sir, How to calculate pull up resistor value in case of analog sensor interface???
❤
I have a charger of bike. It's feedback ic is demaged.how I can find the number of ic?
Sir I have a really urgent question
In my SMPS power supply 24v 10A working properly but when I turn on the smps just after the indicator light is off when smps is turned off it doesn't work
But after a min it works normal until I turn on off simultaneously
When repairing i noticed when my multimeter probe touch one 2sc1815 middle pin (tl494 c1) it turns on all of a sudden but and the cycle continues what should I do sir 🙏🙏
Broken solder joints or cracks in circuit board? Checking the ic with a meter and pushing down on the ic pins can reveal a loose solder joint on the ic where it is soldered onto the circuit board. If you can't see cracks around the pins with a magnifying glass, try to soldering around all the pins anyway and it might fix cracks in the solder. Be very careful when checking with a meter. VERY easy to short between pins with the meter test leads and destroy the ic!
A short (bad capacitor or mosfet) or other problem will cause a fault and the ic will go into a loop and keep trying to reset itself. Check output voltage with a volt meter and see if there's a fluctuation in output voltage and that may show that. Watch Haseeb's MANY smps videos and he'll show this. Good Luck!
How this low ohms (NTC) resistor limit these high ampere current taken by capacitor?
By ohms law, I=V/R, if R is small, I is more. Is it correct.
hi Sir can you please make a video on smps that use single transitor to oscillate like cellphone chargers , i would really appreciater as i don't understand how the transistor perform self oscillation.
👏👏👏👏👏👏👏👏👏👏
NTC?
Negative Temperature Coefficient
Yes
Negative temperature coefficient resistance or thermistor
How to solve smps power up and suddenly off?
عليكم ورحمة الله وبركاته
On headphone, this video audio has some double voice is being heared.
💯❤