I make videos explaining, and playing with technology of all sorts.
In 2016 I decided to start this KZread channel. It was a nice way to combine my interest in technology, with my hobby of making films and videos. It started with mostly boring (and very specific) tutorials and explainer videos, in which I didn't even appear on camera. Over the years it evolved into what it is now, a channel with a wide variety of informative and entertaining videos about technology.
So here we are then, at the time of writing this about 7 years and more than 220 videos later. If you're a long time viewer, thank you very much for watching. Making videos surely is fun, but seeing that people enjoy them or find them helpful is what makes it great. If you're new here, nice to see you found my channel! I hope there's something on there you find interesting.
Floris van Aken - Channel Owner
Пікірлер
really good video
Thank you for greet content
Very well explained. Thank you
Ive never seen a stepper motor or servo motor with only two wires ???
@@perrymattes4285 5:53
Superb Video, you answer all my doubts.
I've been browsing about this for hours. This was the best explanation I found. thanks man
epic high voltage nuttiness! ❤😂 im gonna sub.
Plot twist: There is no company, it's all AI using humans to improve itself ;)
The human body can accumulate a static charge of up to 3000 volts, which is only discharged when you touch ground, so your argument that insulated shoes allow a current to flow through the body can't be right. You can only build up a maximum charge and then discharge it to earth. For rubber shoes to break down and pass current the voltage would have to be substantially higher.
@@ChucklesMcGurk If your body capacitance is charged up to 3kV, that charge leaves your body when you touch ground, creating a short burst of current. In exactly the same way, charge flows *into* your body when your capacitance is 'empty' and you touch a 3kV wire, producing the same current except the other way, charging you up.
Ive got 2 200ah lithium connected to 2 100ah 12v lead acid for 6 months now no issues they all charge. No fire no exploding.
I’ll do you one better. With AC, you provided the RMS current flowing through the body. You might still get a fatal or harmful shock from the peak current if it’s flowing for long enough which, of course, depends on the frequency.
You want us to respect your engineering skills while you use that duct taped abomination of a home made microphone stand?
Stay away from high voltage? But i work with high voltage transmition, how am i going to do my job? 12:05
@@Koser_meg Well I can only guess what work exactly you do, but I'm sure you'll know for anything >1000V you'll usually want to keep some distance. I can't remember the name of the product but there's this long insulating stick these folks (perhaps you too) use all the time to manipulate switchgear etc. I'd say that counts as staying away.
@@AKIOTV yeah, we do use them when operating really high voltage yes. They are also used for checking if there is voltage on the line :) we often work close with high voltage, but sometimes we get high voltage induction, wich is fun :) Best part is raychem muffer, it's a thing that goes on a end of a high voltage cable
Is it possible to connect three strings of batteries in parallel (all AMG) 2x100Ah (24 Volts together) in series plus 2x150Ah (24 Volts) in series plus 260 AH (24 Volts) in series. I would like to equip each row of batteries with a voltage balancer. Is this a good idea for a photovoltaic energy bank? Best regards, Gabriel
I do this using a switch between each size else the smaller capacities fill first and overcharge...you can use separate solar controllers on each battery bank which overcomes this issue...pwm controllers are cheap and good enough 👍
thanks too for a great explanation
Great video. Learned a lot :D
I can't believe this video only got 645 views. Intuitive and clear explanation of a widely misunderstood phenomenon. Great work and keep doing your thing. <3
I have to object. In Germany, grid tide inverters must have a double shutdown in the event of a fault. On the one hand, the mains voltage is monitored and the H bridge is switched off via software. On the other hand, a relay must be added that separates the inverter from the mains voltage. A large Chinese manufacturer ran into problems because he replaced the relay with a wire bridge. The Chinese decided to provide customers with an additional relay free of charge. This saved the manufacturer's reputation.
@@jensschroder8214 Quite possibly the relay is required here in holland too, but I'm not sure. It's also possible it's required starting at a certain power level, maybe micro inverters are excluded. I'll look it up and maybe add one on.
Don't just touch it with your hand. Drunk peeing against the electric fence. But the enlightenment came like a flash. Afterwards, even when drunk, they knew not to pee there.
@@jensschroder8214 ouch 😂
tldw: rubber gloves ftw
Very cool video explanation and pacing
Excellent video and explanation! So much makes more sense now and somehow college classes failed to even cover this. I had always assumed birds avoided the really high voltage lines due to step potential but capacitive coupling makes much more sense. It also explains why folks working on transmission lines from helicopters attach bonding lines and why those attachments do generate quite powerful sparks.
Thanks uncle batany Kay leaya
very well presented.. cheers.
This is the best explanation I've seen. He also explains read direction and the speed adjustment. No one else does.
Awesome!!
So is lead acid the same chem. As gel lead acid?
Thank you.
Very nice thank you so much❤❤
Hi, I want to create my own SRM based on your videos (they are a great inspiration), but I have some questions. What is the purpose of D3, D2, and D1? Are these diodes preventing reverse current? What is the nominal power rating of the resistors before these diodes? How can I determine the current my motor will need? I want to use the DRV8300 to drive the MOSFETs. Is it a good choice, or do you recommend other MOSFET drivers? Are C1, C2, and C3 capacitors needed, or can I use one larger capacitor at the input?
@@kotrinio7868 C1, 2 and 3 are bootstrap capacitors to drive the top mosfets. They are charged through D1, 2 and 3. The drive voltage of the high side mosfets needs to be higher than the supply voltage, or thr mosfets will not turn on. Therefore, a capacitor (say C1) is charged up to the supply voltage (24v), then, when Q10 and Q6 are opened, C1 is disconnected from ground and instead connected to the source of the mosfet, pushing the voltage on the top of C1 above the supply voltage so that the mosfet can turn on. If diode D1 wasn't there, this wouldn't happen, the capacitor would immediately discharge. The need for a bootstrapping circuit like this could be eliminated by using P-mosfets for the high side instead.
Nicely presented in a very clear and concise manner. There are a couple of KZread content creators who need to view this. There are some that have these concepts SO wrong and it is spreading false information.
Very simple yet effective, I like it! Great work my guy! I want to do something similar with a large array, but use photovoltaic switches in a "shadow" box to trigger the program, with a reset to a dedicated position at night. I really only want the panels moving every hour or so for a large array (10-12 panels)
cool
I was thinking it was headed towards an edger blade, then a mini mower of some sort.😅
Potentially it could work as a mower, if you sharpened it a bit more and run it in reverse haha
This is why we need Nuclear Fusion Power Plants. The ultimate in clean energy.
Dumb
dont forget that the energy that solar panels get from the sun is now absorbed by the earth instead of reflecting. this couses the earth to heat up even more.
up until the 80's people would literally put cooking oil on their skin to tan down at the beach, then we where told there was was an Ozone problem and to stay out of the sun, Ozone hole is now smaller and yet we still cant go out into the sun, must be the food they feed us.
You might need to brush up on entropy.
Tell me about it
There's a system that you can use to actually cool a house down better than any other system. What you do is you build a concrete bunker that is about the size of a A/C unit. Make sure that it is sealed off to the outside air, but has ducting to bring air from the house into the area and feed it back up to the house. You have water drip over the concrete slabs, which will cool the slabs down, and cool the air inside the concrete bunker. As you pull air from the house into the bunker, the bunker will cool the air, and put it in the house, as the house heats it up, it is pulled back down into the bunker to be cooled. The only thing you need would be a hose system and a fan. Problem would be solved better. Because the problem with modern day A/C units has nothing to do with the electricity and the release of CO2 into the atmosphere if you are running off a Nuclear power plant. The problem is that in order for your A/C unit to work, the condenser has to release heat from unit outside the house in order to release cool air inside your house. It's why if you want to cool your house down, opening up your fridge and freezer will actually cause your house to heat up not cool down. Sure you can get cool air at the point of where it comes into the fridge, but that compressor in the back will actually release more heat than the fridge reduces.
What do you do with the OLD solar panels and HOW many ppl use Air Conditioners over there.
Luckily, there's zero fucking evidence that carbon emissions create a rise in temperature.
He’s saying what we were all thinking
The problem is not carbon, it's greenhouse effect, which make air conditioning even worse than said, because of the amount of steam released to cool the air, whatever the energy you use to power the AC. Get your facts straight...
But where does the heat go
Usually outdoors
Honey, do you know what a paradox is? This ain't it.
Are you dumb honey? He's providing a solution to the paradox thanks to the introduction of solar
There are multiple kinds of paradox. Check jan misali's video on the subject.
the paradox: AC is meant to cool, yet it heats
I don't see a paradox.. I see a simple positive feedback loop. The cooling creates conditions which need more cooling. A paradox is an intractable logical contradiction.. 'This statement is a lie'. .. etc
@@AKIOTV that's not a paradox tha'ts laws of physics.
You still create more heat than "cold" with the AC... So by turning the AC on you heat up the planet
My brain hurts from reading this.
That's right, that's why a room doesn't get any cooler if you leave the door of the refrigerator open.
If the energy used by the AC is solar power, the waste heat it produces is solar energy that would otherwise have heated up the earth's surface directly. The net result is the same.
@@AKIOTV But the AC components get warm during operation, so they heat more than they cool. In a refrigerator, the ratio is 85:15 heating:cooling. It will be similar for an AC.
@@ghostdog5198 yes, but ultimately all the additionl heat that the AC produces on top of the heat it removes from the building is energy that comes from the power source. (the solar panels)
I don't care about stabilizing thee power net. But I care about health and costs. The best way to do what was described is to produce and use the power yourself. Use as much as you can, and sell the rest. Use as few power as you can while your solar panels don't produce power. Because doing different is throwing money at companies that don't care about you or the world.
A large portion of this issue isn't the energy being used by the AC systems but the chemicals that are used for AC and refrigeration such r-12 and r-134a.
Correct. Carbon emissions from the energy used is less dangerous to the environment than the refrigerants that eventually escape into the atmosphere. Thomas Midgley (the man who created cfc's for use in refrigerators) may have killed the most people in history and destroyed the ozone. Bans on cfc's have caused the ozone to start repairing itself but will take another 30 years to return to pre refrigeration levels. He also created an additive to help reduce the sulfur smell in gasoline sold to the public as safe. The additive was named ethyl and was actually lead. Estimates suggest lead from gasoline still causes over 1/4 million deaths from heart disease each year.
most of the world doesent ahve conditions that are clear enough for optimal solar use