Different types of Reverse Voltage Protection types | What is the need? Reverse polarity Protection
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- เผยแพร่เมื่อ 16 พ.ค. 2024
- #foolishengineer #MOSFETapplication #ReverseVoltageProtection
0:00 Skip Intro
00:44 Need of Reverse polarity Protection
01:37 PN jucntion diode / Rectifier diode
04:00 Schottky diode
05:55 P-Channel MOSFET
07:59 N-Channel MOSFET
References:
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Great information. Thank you!
great video
Can that technique be used when connecting power supplies in parallel? To avoid reverse voltage to the smallest power supply?
Thanks for great presentation sir, I would like to know why is resistor used on the gate and why is zener diode used, is it possible that MOSFET can work without zener diode and resistor? Thanks
Hi friend thanks for another informative video
Thank you so much! Please show support to my video with Super thanks.
Hello Sir, we can use N channel MOSFET by placing it in between the load and -ve terminal of the source. In that case we do not need a complicated circuit, two resistors and a zener diode can do the job.
Come on Anurag don't call me sir,
You are right we can use N-channel MOSFET like that it is the best solution but, there are many systems where we use different grounding paths for analog and digital signal even they have different connectors and connect the layout with just a small ferrite bead so some limitations arrive for low side NMOS Reverse voltage protection. Otherwise it can be used
Bouth mosfet circuit is not revers voltage/current protection if d'ont revers drain wisth source terminals!
I loved watching this.
I have one question, how can i charge a battery if i've added reverse polarity protection?
You can use dual MOSFETs
What is the disadvantage of using nmos in the low side (i.e. return line)? It will not need a gate drive, and will protect against reverse input.
Excellent video! Only minor issue is you used Zener Diode symbol for Shottkey Diode.
Thanks for the info!
Really thanks 😇,,
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If we talk about Dc-dc converter, this is input side of converter. I am interested in output side of converter ( reverse polarity protection). If By mistake some one connect output side battery of dc dc converter reverse manner.,that will be hazard. Pls. Suggest some circuit for that
Thanks in advance
Very very good sir
Thank you so much Sudheer, you are my top viewer!!
Nice video, thanks :)
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Good explanation, how to calculate gate resistor value while using P channel mosfet for reverse polarity protection
Thank you
You can find many application notes on that!
👌👌👌👍
good information
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Yoy are great teacher
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One very easy and cost effective method is to use one diode and fuse.
Hello sir, can we use Schottky diode between buck converter (20A, 25v -12v) and battery source device (12v)?
you can! but can't comment until the full information of the system is known
Hi, how does P channel conduct here bcoz in p channel the flow of current is from source to drain , here drain is connected to batt positive, does this mean drain and source are interchangable
Every MOSFET is a bidirectional device
Please make a video on type of snubber circuit and it use
Yeah, sure!
P Channel mosfet ...in this always current flow from source to drain..
Sorry brother but if you use rectifier with dc input then no metter with polarity input issue output is always polarity
I try this method in 52 volt battery the mosfets fail at no load why is this but at 12 volt the mosfet don’t fail why the voltage level damaged the mosfets
Pchsnnel MOSFET Gate source maximum voltage IS usuallyv-15 -20 or -30V depending on type , thus you should Have a zener diode between Gate andvsource, plus a series resistor to limit zener current to some mA 52V-25V requires some kiloohms such as 4.7 KOhn.
What is a weekal?... don't you mean car or vehicle!
How about you start making educational videos so you can be criticized for your mispronunciations. Otherwise, zip it.
Yaar ye keyaa bakwaas hai, thek se pronounciation rakhna.....ye keya mazak bana rakha hai😤😤