What is MOV? | How to select a MOV?? | Metal Oxide Varistor

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What is MOV? | How to select a MOV?? | Metal Oxide Varistor | Varistor Diode

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#MOV #MetalOxideVaristor #TransientVoltage
0:00 Index
00:43 what is MOV?
00:57 Working principle of MOV
01:29 How can MOV be used as overvoltage protection
02:11 Aplication of MOV
3:09 Structure of MOV
4:01 Advantages of MOV
4:41 Selection criteria of MOV
4:51 rated Voltage
5:15 Clamping voltage
5:40 Surge current
6:28 Leakage current
6:55 Response time
7:20 Disadvantages of MOV
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Пікірлер: 52

@carlanwray8718 3 жыл бұрын

Thank you so much. One comment, when you are going over something like this it is really helpful to go through a datasheet and show the values. You did that for one but just to show a quick screen shot for each value it is most helpful. Doesn't need to be a lot, just enough to link what you are saying to a real datasheet. Thanks again for all the help.

@FoolishEngineer 3 жыл бұрын

Thank you so much for your feedback! I will look into this.

@Thrashenizer 6 ай бұрын

Great work Chief ! Direct techno -> to the point. Thank you

@Sumazure 4 жыл бұрын

Was looking for a description of MOV parameters to do a replacement and came across this. Appreciate the detailed explanation. Thank you. 👍

@FoolishEngineer 4 жыл бұрын

Glad it was helpful!

@Gersberms Жыл бұрын

Excellent summary, thanks for the schematic as well.

@FoolishEngineer Жыл бұрын

Thank you so much! Please show support to my video with Super thanks and don't forget to subscribe to our channel

@t1d100 Жыл бұрын

Very well explained. Thank you.

@FoolishEngineer Жыл бұрын

Thank you so much! Please show support to my video with Super thanks and don't forget to subscribe to our channel

@arkapadma Жыл бұрын

very informative, thanks... thing that missing here is how to read varistor code.

@kabandajamilu9036 3 жыл бұрын

Nice explanation sir

@FoolishEngineer 3 жыл бұрын

Thank you so much, Glad you liked it!!

@QuantumWaveMaster 10 ай бұрын

Great video

@JaykeSapalaran-iq3qs 11 ай бұрын

Great video information 👍❤ thank you for sharing your knowledge and experience 🇵🇭🫡

@FoolishEngineer 10 ай бұрын

Thanks for watching!

@mrtechie6810 Жыл бұрын

How about 220-240VAC? Leakage current? Should I use a 431 or 471 volt MOV?

@saviourdelvin 2 жыл бұрын

eeeeh man thanks for that great info... keep that good work. but i wished to know how they are connected both in 2 phase and 3 phase input. looking forward to seeing your response. thanks tho. much love from UGANDA

@abhijitrashinkar 2 жыл бұрын

Excellent homework

@FoolishEngineer 2 жыл бұрын

Thank you so much for watching!! Please don't forget to subscribe to our channel

@nigel-matthews 3 жыл бұрын

Excellent video - thank you for posting it!

@FoolishEngineer 3 жыл бұрын

Glad you enjoyed it!

@nigel-matthews 3 жыл бұрын

@Kash Kellan no thanks

@jamesallen6007 2 жыл бұрын

Excellent video content. I have subscribed.

@FoolishEngineer 2 жыл бұрын

Welcome aboard!

@rootvalue 4 жыл бұрын

0:38 The working principle Uses Advantages Disadvantages And selection criteria For “HEY GUYS”

@FoolishEngineer 3 жыл бұрын

Thank you so much for watching!!

@darshanpanchal4861 3 жыл бұрын

Nice videos Nice Presentation as well

@FoolishEngineer 3 жыл бұрын

So nice of you

@lateef46623 9 ай бұрын

How to select MOV dia size

@vinaymathapati6800 Жыл бұрын

Bro I have a project...please help me. I need a diode which can pass a certain voltage,say 5v. It must not conduct if the supplied voltage is lesser or greater than 5v. Please help me.Which diode to use?

@salsal1967 2 жыл бұрын

Hello Thank you for your educational information. I have two devices which I want to protect against high voltage (220 V). The varistor should clamp at (150 V). 1st device: 120 Volts 550 Watts 2nd device: 120 Volts 2,500 Watts My question is: What's the right (MOV) size for each device? What's is the varistor's: Diameter Resistance Voltage Ampere. Thank you so much.

@surgingcircuits6955 Жыл бұрын

Thanks for a very good video. To test a MOV, do you do a simple continuity test that should show a very low resistance?

@FoolishEngineer Жыл бұрын

I'll check

@youssefdirani 4 жыл бұрын

Very interesting. I wonder when it clamps the voltage, where does the excess voltage go ? Also, does it act in this case as an ideal voltage source of 0 internal resistance ?

@FoolishEngineer 4 жыл бұрын

It bypasses the voltage and doesn't let it pass through the load. It acts as a close circuit and load is disconnected from the supply.

@Joso997 2 жыл бұрын

@@FoolishEngineer will it flip the fuse?

@WestCoastMole 2 жыл бұрын

Thanks for the video. It is very informative. I do have a couple of questions. Classic schematics of High Speed Vacuum use a capacitor to suppress the Back EMF to protect the keying circuitry when the relay is released. Could a MOV used as a substitute for the capacitor ? The voltage used to actuate the relay is 26.5 volts which seems well within the capability of the device. My concern is the durability of the device. The relay and the coil driving it are both small so I would imagine the energy generated in the Back EMF spike is not all that big. However the device is keyed at a high rate. Is there any way to determine the durability of an MOV? Do MOVs break down quickly? Are they suited for this type of operation ?

@rameshwarshelke4633 2 жыл бұрын

Nice info...sir 🙏 Can u make vdo how to select inductor and capacitor value in any ckt..

@FoolishEngineer 2 жыл бұрын

I have already made a video on bypass capacitors

@nimalperera5454 3 жыл бұрын

Good lesson for us as beginners in electronics. I learnt a lot about MOV's. I have 4 Panasonic bluetooth tower speakers, and now 3 are defective. When I checked the circuit in one speaker, I found the fuse was blown and the MOV damaged. I presume a high voltage spike had entered and as a result the MOV got damaged and the fuse blown. I changed the MOV. The fuse blowing stopped, but the problem is not fully solved yet. I can see very clearly a small damage (a tiny hole) on the surface of the MIP2F2 IC of the circuit, which I doubt to be a crack on it's surface. Could this be a result of the high voltage passed into the circuit? Grateful for your expertise advice.

@FoolishEngineer 3 жыл бұрын

Yes! I think high voltage has been passed through the circuit.

@nimalperera5454 3 жыл бұрын

@@FoolishEngineer Thank you