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High Voltage Engineering by MG Niasar
Netherlands
Приєднався 13 гру 2019
In this channel I am going to cover high voltage engineering topics as well as my hobby. The topics are divided into four categories.
1- Background knowledge in physics and electrical engineering
2- Theory of high voltage engineering
3- High voltage experiments
4- Multiphysics modeling of high voltage components
5- Power electronics experiments
6- Other experiments (my hobby)
- I try to keep the theory part as simple as possible but in general this section would be more understandable for BSc and MSc and PhD students in electrical engineering and physics.
- To better demonstrate some concepts I will sometime add numerical simulation, mostly using Matlab and COMSOL Multiphysics.
- The experimental section would be understandable by most of people and will be linked to our theoretical knowledge as much as possible.
- My hobby section will mostly circle around scientific experiments on topics related to electrical, computer and mechanical science.
1- Background knowledge in physics and electrical engineering
2- Theory of high voltage engineering
3- High voltage experiments
4- Multiphysics modeling of high voltage components
5- Power electronics experiments
6- Other experiments (my hobby)
- I try to keep the theory part as simple as possible but in general this section would be more understandable for BSc and MSc and PhD students in electrical engineering and physics.
- To better demonstrate some concepts I will sometime add numerical simulation, mostly using Matlab and COMSOL Multiphysics.
- The experimental section would be understandable by most of people and will be linked to our theoretical knowledge as much as possible.
- My hobby section will mostly circle around scientific experiments on topics related to electrical, computer and mechanical science.
How to measure large resistances (up to 10s of Giga Ohm) using a normal Multimeter
In this video I will show you how to measure large resistances using a normal Multi-meter and a bench power supply.
In a second video I will make a tiny electronics circuitry so that using same setup we can measure up to 10s of Tera Ohm and also how to measure polarization and depolarization current.
It was for more than half a year that due to very busy life and work I could not upload any UA-cam video. Gradually the period of overload is moving away and hopefully I will upload videos regularly.
Finance: N=78
subs=5362
Available budget (N):5362-100-78*(78+1)=-900
Storage limit: 2^ln(5362)=384,56
In a second video I will make a tiny electronics circuitry so that using same setup we can measure up to 10s of Tera Ohm and also how to measure polarization and depolarization current.
It was for more than half a year that due to very busy life and work I could not upload any UA-cam video. Gradually the period of overload is moving away and hopefully I will upload videos regularly.
Finance: N=78
subs=5362
Available budget (N):5362-100-78*(78+1)=-900
Storage limit: 2^ln(5362)=384,56
Переглядів: 112
Відео
How to add an equation in Visio & How to draw a shape programmatically in Visio
Переглядів 1 тис.7 місяців тому
In this video I show you how to add an equation into a Visio drawing. Also I show you how to change the limits of a control point that are available on some of Visio shapes. Finally I will show you how to make a relatively complicated/repetitive shape, programmatically utilizing ChatGPT and programing in VBA. It has been again a long time since I made my last video. These days workload has incr...
How to calculate inductance in 3D in COMSOL Multiphysics
Переглядів 1,5 тис.9 місяців тому
In this video I show you how to perform a 3D model in COMOSL to calculate inductance. It is very important to check the quality of the mesh before running the simulation. Also make sure that number of meshes are not so high that your computer ram can not handle them. I showed the simulation for two cases, a rectangular loop, and a rectangular loop with a toroid around it. After more than 2 mont...
Repairing a broken card holder
Переглядів 2,6 тис.Рік тому
My card holder (Secrid brand) dropped from my hand and its movement mechanism broke. It was given to me as a gift so I had to repair it. I repaired it a while back by melting it together but again it fell of my hand and totally broke. This time i decided to repair it properly. The waves of documents and theses to review and preparation for an upcoming talk and a conference to participate and le...
How to convert image into curve in COMSOL
Переглядів 1,1 тис.Рік тому
Sometime you have an image of an object and you you want to convert it into a workable geometry in COMOSL or you want to make a 3D print of that object. While COMSOL permits you to import .dxf files, but your image is most likely a .png or .jpg file. Obviously in a professional image editing software you can convert an image into a vector and create a .dxf file but you may not have such softwar...
How to make double layer tea
Переглядів 256Рік тому
Hi, I am back :), after nearly two months of not being able to make any video, i got some time to make a short video, and more new technical videos will come soon. Life has been so much busy this whole summer. So many students. A few of my master students have graduated, Mahesh, Ewout, Gijs and Shibanni, congratulations to all of you for the excellent job you all did in your master thesis work....
How to make Weibull probability plot and its confidence bounds in MATLAB + median rank explanation )
Переглядів 3,1 тис.Рік тому
Eventually after several years I got time to make a video about Weibull distribution and how to plot its confidence intervals. I wanted to make this video several years ago, but due to the fact that I could not find the proof of one formula i put it aside. Recently one of my student needed to plot confidence bounds of Weibull plot. I decided to explain how to do it in MATLAB. Also since I could...
How to run a Simulink model for different input parameters and plot the simulations results
Переглядів 2,8 тис.Рік тому
I needed to perform a sensitivity analysis on a Simulink model, so I decided to show how you can run a Simulink model many times and study impact of input parameters on the simulation output. It is very obvious, but maybe become of some help to some of the new MATLAB users. More than 40 days has passed and I could not manage to make any videos. My friend Luis was going to come to my home and it...
How to make conductive paint ( Graphite powder + Nail Hardener or Acrylic Varnish )
Переглядів 14 тис.Рік тому
For a research project we needed to create a semi conductive layer around the test object. We tried silicone rubber and carbon black at university but could not achieve much conductivity. Our silicone rubber could not take much of carbon black in it and with high percentage of carbon black it turned into a solid paste which could not be cured. I therefore decided to take the matter to home and ...
How to draw a spiral structure in COMSOL + how to assign colours to domains and boundaries in COMSOL
Переглядів 1,8 тис.Рік тому
In this video I show you how to create a spiral structure in COMSOL and also i show you how to assign different colors to domains and boundaries. For a master thesis project we want to make a HVDC source based on wireless power transfer. We therefore needed to make a spiral structure to hold the litz wire and hence we could create a pancake coil. Talented master student, Suraj has created this ...
Flame rectification and physics behind it ( flame based diode )
Переглядів 3,4 тис.Рік тому
Flame has a property that can be used to rectify AC voltage. Basically the flame can act as a diode, However the amount of current that can pass through the flame is rather small so it has limited application. One of the application of flame rectification is to detect if there is a flame or not. This can act as a safety device and can provide information if the burner has flame or not. I will e...
Electric field and candle flame + measurement of candle flame electrical conductivity
Переглядів 730Рік тому
After I made my first video on effect of electric field on a candle flame, I decided to know more about the topic. It is interesting to know that a lot of research has been done on this topic. Among the many publications which i looked at, one PhD thesis stands out, so if you plan to read here is the link: spiral.imperial.ac.uk/bitstream/10044/1/15991/2/Melinek-SJ-1969-PhD-Thesis.pdf Also it am...
Effect of electric field on a candle flame ( ionic wind )
Переглядів 2,2 тис.Рік тому
A few of our students are now working on corona discharges and ionic wind. Luutzen wants to sample viruses from air using corona discharges. Peter and Immanual are BSc students and want to create an improved ionic propulsion system and Zhifeng is going to model corona discharges and ionic wind at high frequencies. I decided to demonstrate ionic wind using the famous experiment of candle flame i...
Impact of air humidity on streamer length of a Tesla coil
Переглядів 698Рік тому
We have two students who will work on alternative gases for replacement of SF6. Shruthi and Ewout. Their work is about investigating impact of air relative humidity and other contamination on breakdown strength and PD behavior of air, technical air, and C4F7N/CO2. That was the motivation to make this video. It seems we can directly observe that increase level of humidity increases the breakdown...
Save +90% of your heating cost during the winter using an old Iranian technology ( Korsi کرسی )
Переглядів 1,2 тис.Рік тому
Winter 2022-2023 is coming and the gas price has increases significantly during the past few months. I thought some people might have issue paying their heating cost, hence they are going to suffer the cold of the winter. In this video I explain a very old Iranian method that you can use to stay warm during the cold months with very minimum electricity cost. This is called Korsi ( in Persian کر...
Charged particle tracing ( ray tracing ) in COMSOL Multiphysics
Переглядів 4,6 тис.Рік тому
Charged particle tracing ( ray tracing ) in COMSOL Multiphysics
Rice Engine v2 ( How to make an improved Thermoacoustic Heat Engine )
Переглядів 1,4 тис.Рік тому
Rice Engine v2 ( How to make an improved Thermoacoustic Heat Engine )
Self starting Thermoacoustic heat engine
Переглядів 2 тис.Рік тому
Self starting Thermoacoustic heat engine
Improvement of Thermoacoustic engine with glass beads (end of the Rice engine era)
Переглядів 2,4 тис.Рік тому
Improvement of Thermoacoustic engine with glass beads (end of the Rice engine era)
Thermoacoustic engine (The Rice engine) makes very loud sound , Quarter Wave Resonator
Переглядів 950Рік тому
Thermoacoustic engine (The Rice engine) makes very loud sound , Quarter Wave Resonator
Themoacoustic heat engine (The rice engine) shakes my house
Переглядів 953Рік тому
Themoacoustic heat engine (The rice engine) shakes my house
How to make a thermoacoustic engine with a linear generator ( Rice engine )
Переглядів 6 тис.Рік тому
How to make a thermoacoustic engine with a linear generator ( Rice engine )
Inductance calculation Part 2: inductance of a coaxial cable
Переглядів 699Рік тому
Inductance calculation Part 2: inductance of a coaxial cable
Dry mango and papaya under the sun ( my first attempt )
Переглядів 4,1 тис.2 роки тому
Dry mango and papaya under the sun ( my first attempt )
Current distribution in a coaxial cable + proximity effect
Переглядів 1,1 тис.2 роки тому
Current distribution in a coaxial cable proximity effect
How to couple an electric circuit with a physical model in COMSOL Multiphysics
Переглядів 6 тис.2 роки тому
How to couple an electric circuit with a physical model in COMSOL Multiphysics
Coil winding machine with foot pedal ( semi-automated ), for Tesla coils and other types of windings
Переглядів 9 тис.2 роки тому
Coil winding machine with foot pedal ( semi-automated ), for Tesla coils and other types of windings
Capacitance calculation , part 1: capacitance between two conductors ( analytical and using COMSOL )
Переглядів 2,2 тис.2 роки тому
Capacitance calculation , part 1: capacitance between two conductors ( analytical and using COMSOL )
Egyptian geese and their babies in front of my house ( Netherlands , Delft )
Переглядів 5352 роки тому
Egyptian geese and their babies in front of my house ( Netherlands , Delft )
Single transistor self-oscillating circuitry with NPN or PNP transistors ( Joule thief )
Переглядів 3 тис.2 роки тому
Single transistor self-oscillating circuitry with NPN or PNP transistors ( Joule thief )
Fantastic video, that would come in handy when winding inductance coils for ham radio antenna and linear amp projects!
Thanks
Hello. Can I buy dried papayas from you?
❤😊🎉🎉🎉🎉❤❤❤❤
Great video! I think one could improve the accuracy of this method by measuring the value of power supply voltage beforehand using a multimeter. At least that's what I do - I don't really trust those built-in meters :)
Thanks, I wanted to mention it in the video but forgot. The power supply I used, shows the current and voltage values rather accurately, otherwise we indeed must use a second multi meter to measure the voltage.
Im interested to do a similar test on an oscilloscope. How did you connect up those wires to do the testing?
my coworker gave me some, yes its temporary but man it works, thanks for sharing 😬👍 I do a warm saltwater rinse and then the clove.
But, can in out complementary in that speed..?
HOW ARE YOU GETTING THOSE SWORD SPARKS????
ua-cam.com/users/shortsWtXnZrgr7UQ?si=z9w5QU_j_Z_IaPFy
Thanks for the video. I was wondering why I couldn't get my flux to work, but wasn't cleaning it off. Once I did, it worked perfectly. Thank you
Awesome. Thank you!
first of all nice video and great explanation why do i feel you have one middle eastern accent?
نمیدونم چرا ایرانی ها هر چقدر هم خوب انگلیسی صحبت کنن بازم معلومه که ایرانی اند
It may have something to do with the moisture.. spiders need fluids so it may have detected some water content.
Thank you!!!!!
Is there a way to integrate elementwise? and extract the integrated values for the elements not the nodes?
I made this exact circuit at home. Just got it going yesterday. I'm having an issue though- for whatever reason I can't seem to get it above 40 volts . If I try it just dies. I have an adjustable voltage regulator on the way from AliExpress after watching this. The differences with mine are: 4 turns on the primary, 980 turns (32awg) on secondary. Also, mine is rectified by two 6A10 diodes in series. I'd really like to know why I can't get it past 40 volts. I wish I could post a couple of pics here. (P.S. I don't own an oscilloscope, I'm fairly new to electronics, but it's extremely high on my list). I am thoroughly and utterly impressed with you. Any advice or help you could offer would be appreciated. Thanks for great content
If the circuit successful with you tell us
It is pretty successful so far, I posted some shorts of it in action
It's with the voltage regulator and a triac dimmer switch in tandem in these video shorts. No snubber yet, maybe that's why I'm burning them up. It has a strange resonant effect in some of them. Is that caused by the electrons happenstance to coincide with the voltage ramp of the rising half sinewave?
I got it to 115 v
hello sir, can you make a lpg ionization rod flame sensor without photodiode IR receiver
good job
using mphplot getting error: No constructor 'com.comsol.model.Model' with matching signature found.
is this deadly ?
I did exact same thing and there were no HV diodes inside???
SOLUTION: you can force Fuxxing UA-cam by going to "Video details > Show More > Tags(where you put your taggs) and then add "yt:cc=on" as a tagg
thats why youtube is so bad! you cant even trim your video if it has over 100k views
Thank you for the video! Could you create one with SPICE circuit extraction for the coil or transformer?
You have to wiggle the meat lightly so they think its traped prey
Is it the D631?im looking to fix it
ایرانی هستی؟
haha nice I bought the same one sadly mine shorted the SECOND I plugged it in
Absolute god, big lad.
Hi Sir ! do you teach COMSOL online? if yes I want to contact you
More gibberish. Cannot understand a word. 👳🏾🙉
Size of the smallest one
Thank you for doing your best to help spooder! He did a big service for ypu by eradicating your drain flies and the least you did your best to show appreciation to said spider! I currently have recently found 2 in one of the unused rooms of my home and trying my best to keep it alive. However, I have not done enough research as to what I REALLY need to do to keep them around.
This is the best breakdown......why can't you build one using equivalent components and try to rebuild the schematic.
Thank you, enjoy your dinner
What the version matlab and comsol i need
Why is no one showing me how to get the black pusher out
Thank you a lot It was very helpful
Thank you so much ....
Dental picks are really good for picking off potting compound.
400KVs? Lying is such an underrated sin.
Any reference on why this is important from the perspective of THD?
Cool stuff. Im in . I subscribe 🎉
Great analysis. One important detail: the output transformer has 6 windings in series. It is critical in this type of high voltage range. If there was only one winding with 6 time more turns, assuredly, the transformer would internally produce arcing and would burn very quickly. Hence, the importance of using 6 isolated windings in series, as is the case here. Great video, thanks, I wanted to open one of those for a long time. 🎉
Are you using any type of ballast? I ask because I'm building this circuit
I've built a little office in a small closet; I'm in there now - me and my computer keep it warm, and if it gets colder than that I have a small space heater to make up the difference. Maybe not as comfy as a korsi, haha, but it's maybe easier to get work done.
13:00 You were measuring the capacitances while the capacitors were still part of the circuit; that generally produces incorrect results, yeah? Since the other parts of the circuit may e.g. have a capacitance of their own. Edit: ah, you do mention this later.
Nice, Dear Sir, please provide your email address. thanks.