Mini Project: DIY Wireless Charging 

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Siana Gearz microphones are yummy with nacho cheese sauce. Just sayin 😂😂😂💥

@@tinysolarshack9615 Can confirm.

You could have used the normal word chew but you had to use the word gnaw now I can't stop laughing.

Is there a way to make this with out causing RFI

weird is good there is no other way to make a video like this.

Full of factual information and well presented well so even a child could understand. Keep up the good work Dayron the Internet needs more people like you that show the truth and don't decide to get clicks.

Can you try this ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-I1IDC8FEIBU.html

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Matt Ferrigno this is spot on! Some chargers work great, others not so good. I have one that has quick charge capability and I have an 18W charging cube for it. Which makes it perfect!

This is exactly what I was going to say. For a science channel, I'm sure he has to understand what friction does to the contact pads by using a charging cable. If anyone is like me and prefers not to spend $900+ (last phone was $1200) every year or two - then you'll look for ways of prolonging the life of it. There's also the convenience aspect of it. Just sit the device down on the pad (for me, in any orientation) and bam.. it charges. It takes seconds compared to tens of seconds of time (science efficiency, undervalued?). And like you also mentioned, one wireless pad for a multitude of devices. I have an Xbox controller, Apple TV (Siri) remote, two iPhones, and some other hacked together electronics (Raspberry Pi) that all charge with the exact same pad. I count three different types of connectors there. I guess in the science world, if something is stupid simple then it has no use case.

My phones socket is worn so it's easier to use a wireless charger than trying to find the sweet spot where it will actually cable charge. Also got a wireless charger in my card ( as part of the phone cradle ). It's nice to drop the phone in and not have to plug/unplug a cable each time

Magnetic cable suck what we really need is little holes on the back of the phone that when you set it on the charger there are tiny pins that stick into those holes that charge the phone preferably make everything as flat as possible then for example you can walk up to your computer set it on top of your computer case and it would make that noise that computers make when you plug in USB cable to your phone

Yeah

np That's what I'm here for :)

Hey, thanks!

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Oh? And what might that be?

@@BlueprintScience I'll never tell.

Thanks, dudes.

My brother did this once for real and got a really nasty shock from the charger.

I may not look the part, but I am actually 9 years old.

These days, it’s weird not to be weird :) Thanks, I’m glad you liked it!

Blueprint where are you from?

Midwest US. I’m Dutch, if that’s what you were asking

Blueprint I am in Canada, from Eastern Europe slavic origin.

If I'm remembering correctly, using RMS (root mean square) values means that we can use P=V_RMS*I_RMS. Assuming the same voltage on each coil, the ratio of power the same as ratio of the currents. If we felt like using peak voltage methods, all that is out the window and we would need to do what you said. ... and Merry Xmas.

OFF-Grid HillBilly Style I assume you mean the small coil. That was theoretically 10 volts, but since the frequency generator can only supply less than 100 milliamperes, the voltage dropped into the low single digits; not sure beyond that.

I measured the current in and the current out and compared the two against the theoretical value using the efficiency equation: efficiency = (measured - theoretical) / theoretical

Yes, Kanthal is very conducive.

dear Use the signal to switch a power transistor. This is the most basic amplifier

Good question. The problem is that I have reached the maximum wattage of the system, that is why the voltage dropped from 5V to 3.5V. It's because the source refuses to push any more current than 100mA so it clamps the voltage inside the source. If the output voltage were higher (i.e. 2:1 for 10V), it will still max out the current and clamp the voltage again at 3.5V.

@@BlueprintScience ohhh...

Between you and I, (judge me if you wish) I was leaving town for the holidays and that was also my final exam week. I was tight on time and couldn't design a proper amplifier - its not as easy as you might think at so high of a frequency.

Are you familiar with Faraday cages? A sheet of conductive material doesn't allow an electric field through, protecting what on the other side. Likewise, a magnetic Faraday cage can exist where a sheet of magnetic material doesn't allow magnetic fields through. Phone chargers have a ferrous plate behind them so that the magnetic fields don't pass through and affect the electronics.

@@BlueprintScience I am familiar with them, just not intimately so! I always thought that sheet was there to also hell reflect lr trap more of the energy increasing, potentially, efficiency Would I open every wireless charger and hope they all contain one though...

No sir. I let freshmen at my university decide not to haul their microwaves back with them at the end of the school year, then I take them. Good way to get about 10 microwaves a year.

Maximum power transfer occurs at the resonant frequency. As you stray away from it power drops. Power output looks like a bell curve where the horizontal axis is frequency. A good example of resonance is pushing somebody on a swing set. The best time to push them is right at the peak of their swing. Push them before *or* after that sweet spot, and some energy is lost.

It's a sad state of affairs when that joke lands!

Blueprint Indeed!

Dewit

Parasocial relationship much?

Maybe...

For one thing, MIT is over-hyped. For another, it's not difficult to pull power away from high voltage lines with a coil of wire. There are stories of farmers putting spools of wire on their property so they can steal power. As, per drones... I don't imagine that the range would be very good being inductively or capacitively coupled to a low frequency source such as the power lines.