Overvoltage and Undervoltage protection

[@raymondmichael4987]

Never regretted subscribing to this channel. Thanks a lot, Greetings from Tanzania 🇹🇿

[@sasodoma]

Literally yesterday I was looking for a quad comparator ic in my pile of junk. Thank you for telling me where to find it

[@ameratm8354]

It is excellent in every thing : Subject, describing the purpose, the scientific explanation and the voice of explanation.

[@FabiansLab]

It's always you that makes the video topics I need

[@furqanahmd4135]

Circuit is very usefull please add overload and delay on using other two opamps

[@narendravishwakarma6956]

I really love your voice and accent.... Really I am great fan of you...😘😍

[@premnandpal7371]

he is male voice by google

[@mand6029]

thanks for the details , very well explained

[@myname3463]

Я сделал новый паяльник. С вашей помощью;) Спасибо и поздравляю.

[@shvideo1]

Excellent topic and circuit. Very well explained. Thank you!

[@JoseRatiga]

excelente video, me dio muchas ideas para implementar dicho circuito de proteccion, thanks

[@TheBalconyWorkspace]

My friend where did you get this female voiceover? It sounds very real , instead of those AI made voices.

[@zfaj2168]

can we use lm358 instead of lm339?

[@ronen124]

very good Mr. Kasyan

[@jitubhai82]

Men's power high cut low cut circuit please.

[@sanamandingra]

Thank you!!

[@pak_no1168]

Can you show us, circuit protection for 220volt AC Equipment from unstable generators voltage e.g 300volts voltage.

[@bashaaksema94]

Can you be more specific?

[@pak_no1168]

Let say, we have electrical shortage. Then we want to use our PC, automatically we will use our generator. Mostly generator's voltage fluctuated frequently start from 180volt to 300volt in a matter of second. So the problem is, how we design circuit that can protect our pc? Other than utilize my pc with voltage stabilizer.

[@MOHAMADGHOUL81]

Hello Dwi Cahyono The LM324 can grant your inquiry with its 4 gates. You can apply the low and high voltage protection stages including normal and circuit delay on each gate.

[@ahmad-firdauscook1452]

You can also add a motor driver to move a secondary coil to passively control the voltage...but I think an inverter could do the job too, to make the circuit to drive a capacitated rail and provide a sinewave that is steady. They make some inverters to work off of A/C and D/C at the same time...but by that money, may as well buy solar photovoltaics and make a thermal mass battery underground that can push steam into you converted combustion engine to steam engine driven by that thermal storage...cheaper than batteries and lasts as long as the pipe/tubing.

[@Dc_tech386]

Wont a simple ziner diodes do the job too just use a ziner to the battery voltage so went the battery is full the the ziner diodes conduct and turn position voltage follows to the pnp turning it of and the same for low voltage use a valve to the low voltage to protect voltage ziner will stop conduct and the mosfets gate is pull down turning of the device

[@manigandans4685]

Pls design solar charge controller

[@Engbic]

Great work, thanks for sharing.

[@supersilve]

I was just wondering why you did not use an LM393 instead.

[@Sekhar_Home]

Also LM358

[@tomcat501976]

Does this function like a 12 volt smart charger or a battery maintainer? Thanks.

[@electronic7979]

Helpful information

[@coolnic1137-duofficialmaven]

Oh hey PNP!

[@pssuresh1]

I made the circuit the relay trickling because the charging volt not constant 0.3v to 0.5v up down , so unable to set any particular point.need minimum 1v delay in to jump.

[@tetraspace3000]

Hi Thanks for useful video. I wanna make protection circuit for 5volt supply to protect my microcontrollers, what's suitable "zener diode" for that? I'M BEGINNER Please, Answer soon as possible. its important to me. THANKS

[@ahmad-firdauscook1452]

I used a 6.2 zener for the low side..I installed mine backwards at first and wondered why it would work...my eyes are bad actually..but it works. I put the transistor output from the pnp's to all run into either a relay or mosfet to switch on/off the circuit. For my current protectiin my circuit was the positive side fuse I was replacing with the protection circuit, so I simply put put the output of 13 Into pin 9 to invert the (+} and give a negative to compare it to...I think some people may have better luck splitting circuit working voltage up and putting a chip in it that has a (+),(neutral)and (-)...this would give it much more range to work in...so I added a zener 9.2 1k resist, and an pnp to provide a more stable the reference, the circuit works like a charm.

[@therichofficial1465]

Great video!. But how if we want to use the device at 48VDC 30A?

[@TarzanCHG]

use a relay

[@dhayadpi2798]

Please provide MOSFET name and resistors value.

[@pdrg]

As always that was great

[@HoliqHudairi]

Where is the relay for protection ?

[@afzalqureshi6741]

what is the name of this green sheet?

[@harkamaljitsinghgill8279]

where is the circuit diagram

[@16phoenixlast]

I have seen Sprint layout for making pcb design on your channel. Plz give us link to use such software. May I know what are your jobs ? How you earn and. How are you able to run this channel ?

[@16phoenixlast]

You help us so much, but how do you get helped to do this, ??

[@neropaulozaldivar6501]

you can used also this as an 12v auto cut off battery charger?

[@premnandpal7371]

yes, lm339 have 4 compair icas datasheet as 1. full charge by variable R 2 over discharge by variable R 3. short circuit by variable R 4. any you want by variable R

[@adhil8918]

Ic no in lm339 or lm339N WHICH YOU USED PLEASE REPLY

[@premnandpal7371]

lm339n is used

[@Basement-Science]

Pretty sure this undervoltage circuit can start oscillating strongly if the input voltage has some impedance, right? Voltage is high enough -> load pulls down voltage -> undervoltage protection triggers -> input voltage goes back up -> ...

[@ahmad-firdauscook1452]

I tried something like the above protector but without the op amps, it does that very erratically, and when it has a short-circuited load on it, it would still stay engaged...So I will try this circuit next..But I think that's a normal function of these kinds of protection circuits due to the logic of it. The same if you used it to protect battery over-voltage or under-voltage, you'll want the circuit to re-engage or else the battery will be stressed needlessly.

[@Basement-Science]

@@ahmad-firdauscook1452 One could add some hysteresis to prevent it in more cases (battery protection ICs do this), or even count the number of trips and stop after some number, etc.

[@maggoticepulse]

Can we use it under 5volt?

[@alfatihid8901]

same question, any one can explain with case

[@hassanmunir]

download link is not working

[@niputusriwartini7320]

Saya kalo mw beli dmn?

[@alfatihid8901]

buat sendiri, tak ada yg instan

[@tanmoyhaldar138]

I think there should be hysteresis......

[@labanchege5261]

Does jlcpcb reach africa??

[@matzmatz4148]

Probably

[@ocayaro]

Laban Chege China is a better friend of Africa than the west. So, YES.

[@matzmatz4148]

@@ocayaro nobody and that is the sad truth is a real friend of Africa the west and China just want to exploit Africa for the resources.

[@lesliepieterse1072]

I have ordered over the last 2 years from JLCPCB 5 different boards, and they have all arrived within 35 days. To South Africa.

[@chibuzo7746]

@@lesliepieterse1072 please do you happen to know how one can buy any of panels used in her videos from JPC. I will like to do so, not just hers but others Am not well informed in the regard. Thanks for sharing