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Solar Cells Open Circuit Voltage

The Future of Solar Energy is TINY Technology!

The future is huge for tiny technology. Miniaturization is, perhaps ironically, a huge deal. I mean, without it we wouldn't have had the personal computer revolution and we wouldn't have this world we live in now, where we have smartphones and tablets and other devices just as powerful as a computer, that can fit in the palm of your hand. But even these gadgets are gargantuan compared to nanotechnology! See, a nanometer is just one billionth of a meter. And that's kind of hard to imagine, so let me put it to you this way.

Your typical sheet of paper is about one hundred thousand nanometers thick. And at this scale, individual elements are so small you can't even see them with a light microscope. Now as we learn more about how materials behave on the nanoscale, we have more potential applications to use that knowledge practically. I'm talking about how nanotech could help solar panel technology. And fortunately, at a recent meeting of the American Association for the Advancement of Science, or AAAS, they had a panel on just this very subject. Now if you know anything about solar panels you know they have some drawbacks. For example,.

Efficiency they max out at around twenty percent in the field under ideal conditions. They're also rigid, so you can't just put them anywhere you like. And they tend to be expensive because manufacturing them is complicated. But scientists hope that nanotechnology can help address all three of these challenges. Now with efficiency they're looking to nature specifically, moth eyes. You see, moths have these little tiny structures in their eyes that help reflect light back into the eye and it does two things it lets them see better in the dark, and it cuts down.

On reflection so predators can't spot them as easily. With solar panels it could actually make them more efficient by reflecting more of the sun's light into the panel so you lose less in reflection. And when we're talking about flexibility, well nanomaterials are really, really small, and there is the potential to create solar panels that are just a few sheets of molecules thick. They could be as flexible as a sheet of paper, and with that kind of flexibility you could put those pretty much anywhere you wanted to.

And as for price, well, that's the big one. And in the short term I don't think it's going to turn around. But scientists are cautiously optimistic that nanotechnology will let us use new processes, like printing solar panels directly onto a substrate using just a specialized printer. That would actually be less complicated and expensive than traditional manufacturing methods. Now at that meeting of the AAAS, a Dr. Wolfgang Porod gave a talk about Nanoantenna Thermocouples for Energy Harvesting. Which I admit sounds like technobabble straight out of a Star Trek episode.

But it's actually fairly simple once you break it down. A nanoantenna is just an antenna on the nanoscale. These resonate with longwave infrared radiation. And a thermocouple Well that's a component of circuitry that generates a voltage when one part of the thermocouple is a different temperature than other part. So you pair these two together and the antenna generates heat and the thermocouple generates voltage. It could actually help increase the efficiency of solar panels. Now like I said, nanotechnology is a young science and it has lots of different applications.

Across many disciplines. And I'm really excited how such a small technology could have such a huge impact. That leads me to this week's question. When I say the word nanotechnology what do you imagine What does that word mean to you Let us know in the comments below. Then, do me a nanosized favor and share this tutorial with your friends. If you enjoyed it make sure you hit the 'like' button and subscribe to our channel. Then check out these tutorials over here. There's some huge surprises in them.

Burning Stuff With 2000F Solar Power!!

In a previous project I found a free tv and turned it into a giant solar scorcher. This shoots out a deadly beam of sunlight, that's hot enough to abuse food, melt metal and burn things you probably shouldn't. Today seemed like a good day to play with my Solar Scorcher. I positioned my frame and found the focal point, then added some concrete tiles as a base for my projects. Ok, I've got power, and I'll test it out with this piece of wood and when the light makes contact.

I've got instant fire. The sunlight at this spot is around 2000 degrees Fahrenheit, enough to melt this spot of concrete into a glowing orange liquid. I'm curious to see what I can do with all this heat so I've filled a glass bottle with water and I'll punch a hole in the cap. It's incredible to see that the instant I focus my lens on the bottle, it starts smoking. Just a few moments later this water is so hot it's boiling, and I'm a little nervous the bottle might blow. Yep, there it goes. The glass pieces are melting and that's cool,.

But now I want to try this on some food. I'll get some hot dogs, and when they hit the beam they really do get hot. This might be a little well done for my taste, and I'm still hungry so let's try an egg. The egg is actually working very well. It's so reflective it doesn't burn as fast, and even my wife is interested. A little salt and pepper and it's tempting to try a bite. Ok, so I wasn't actually expecting to eat this, but it looks safe enough, and.

Even my kids are anxious to try. Surprisingly, it's pretty good. Alright, let's see what else this will do. I'll try burning a penny, and, wow, it melted. How about a stack of pennies Yep, they're nothing but liquid metal now, and I'm thinking that slag in the mixture must be what's left of the copper coating. It's only taking about 4 seconds to melt these, and melting metal is really great, but now I want to see something burst. I wonder what would happen to this egg It's spewing some kind of debris and smoking like crazy. I hear.

Some little pops and it's even forming some interesting growths. huh, Look at that. But no explosion. How about if I put a pop top on this bottle of water and let the pressure build up Yeah, that's what I'm looking for. Let's do that again. The lid is back on, and pressure is building. Awesome! Alright, the sun is setting and I've readjusted my Aframe. I'm just wondering if this would ignite gasoline. It does. Hopefully it goes without saying that this is very dangerous and you shouldn't try this at home. Well, I'm convinced there's.

An insane amount of power behind these lenses. If you'd like to see where I got this one, take a look at my tutorial on how I hacked it out of an old TV. This one boiled water in less than a minute, welded a nickel to concrete, and instantly torched any piece of wood in it's way. Well that was fun, but I'm still hungry so I'll put everything away and go get some real home cooking. That's it for now. If you liked this project, perhaps you'll like some of my others. Check them out at thekingofrandom.

Baldor Test 5 OpenCircuit

It might also be of interest to know, at high RPM's, and the generator is running unloaded, and the speed is quite high, the opencircuit volts are quite high as well. This is actually a very dangerous amount of voltage. One hundred volts, if you were to touch that, would give you quite a jolt! Not until the generator is loaded with a battery by demanding current will it clamp the voltage down to the battery voltage. At the moment very little load is required to turn the generator. Again, the volts aren't.

Brainy Eco Protection against high voltage Test

SuKam Brainy Eco solar home UPS. In this, there is panel voltage PV voltage protection is provided and we will test this. As you can see, instead of panel we are using DC source here. The voltage through panel is 20.27. Now we will connect this. As we connect solar, the colour of LED changes to yellow and charging ampere starts. Now we will increase the PV voltage. If PV voltage becomes more than 25V, then this PV will go in high protection mode. You can see that as soon as the PV voltage becomes more than 25V, solar LED starts blinking.

Capture an IV Curve of a Solar Panel Solar Module Test Part 1 of 2

Today we're going to capture an IV curve of a solar panel using our new N6784A SMU module. It's a fourquadrant power supply and can be used in the 1U high compact system mainframe or it could be used in a benchfriendly DC power analyzer. For our demonstration today, we've installed the SMU module into channel one of the DC power analyzer, and we're using channel two to power our LED light source. Our LED light source is bright enough to create some photovoltaic energy in our solar panel, which will use the SMU module to capture both the voltage and current.

We've written a simple demonstration program to plot our IV curve. We start at zero volts and we make a current measurement from the SMU. We increase the voltage and make a current measurement. We continue to do that until we step all the way through our IV curve. From our IV curve, we can make several important measurements. We can capture the shortcircuit current, which is the true shortcircuit current. If we tried to make the same measurement with a multimeter, it would be a little bit low because of the burden voltage of the multimeter.

We can also measure the open circuit voltage of the solar panel, we can calculate the fill factor, as well as locate the max power point. Now, if we dim the light source, we can make another IV trace with lower illumination, and we can repeat this. Lower the light source and capture a curve. With our family of curves, you can see with lower levels of illumination, it really affects the first part of the IV curve more than the second half of the IV curve. This is common with solar panels.

Being that this is a fourquadrant power supply, we can actually extend our measurements into the adjacent quadrants. So we've started a new IV curve into the adjacent quadrants. So above this axis the SMU is sinking current, below this axis we're sourcing current. Likewise, on this axis we're sourcing a positive voltage and on this side of the axis we're sourcing a negative voltage. So in this particular example, we started with a negative voltage, we slightly increase it, measure the current and repeat that until we go all the way through our IV curve.

Mini Digital Volt Meter Ideas

I've got this homemade power supply that I've been wanting to put a meter on for a long time and in the past I had choices like analog meters and the they look like this minus the control down here. As you can see it's just too big, they take up a lot of space and they are not all that accurate. and then there's this bar type but the bar type well frankly it'll also take a lot of space and to not all that accurate. So the other day.

These have been out for a while, but the other I found one of these Thought I would put it on here. Let me tell you a bit about them They are rather interesting, little selfcontained digital volt meters This is a 3wire system and what that means is that you power the meter with voltage between the red and the black It can vary a lot. This particular one is between 3 and 30 volts it operates And that is these 2. And the sensing is a between the black wire over here and the white wire.

And it will sense the voltage and that's what comes out on the readout, what's between the black and white wires and ths one they told me will sense between between 0 and 50 volts. Right now I'm running it on a battery pack but by simply touching the white wire on the red wire I can measure the voltage of the battery pack which is showing 2.9 volts. I can power it with 1 power and measure something completely different. I can show you and example of that with a quick and dirty volt meter. Also this is all.

Selfcontained very tiny you can see. I can mount it on the outside It's got little ears. I've got lots of space for it right here. It not going to be an issue With the 2 wire system it takes about 3 volts before the display cames on So it obviously will not measure anything less than 3 volts but with this one I can measure, well right now I'm getting zero volts The power is on so clearly I can measure measure a lower voltage than it takes to operate the display LEDs.

That is the benefit of the 3 wire system. I can read much much smaller voltages down to 0.1 volts in this case As an example of what you can do with these digital volt meter displays I taped one you could mount it permanently on to a battery holder, there are a couple of battieries in there turned it on and then just connect the common black and the sensing on to my target and 1.50 volts and that's correct for this battery So now I have mounted this digital volt meter on to my power supply.

Laser Communicator DIYHomemade

Hi Gang! This is my homemade laser communicator. The transmitter's right here and the receiver's way back there. This is the transmitting side. The laser is a pet toy laser. The sound going into the microphone, goes through the electronics, and is used to modify the intensity of the laser beam. If you look closely at the solar cell you can even see the fluctuating light. Here's what the solar cell looks like close to the receiver. The solar cell turns the fluctuating light back into electricity, which goes to this amplifier, and is turned back into sound.

And here's a closer look. I plug the microphone in here. In here is a homemade amplifier. It amplfies the sound from the microphone. That then is sent into here where the batteries are for the laser. It's also in here that the amplified signal from the microphone is mixed with the power from the batteries to produce a new fluctuating power that's sent to the laser. The direction the laser points is entirely adjustable. The result is that the laser light fluctuates according to the sound from the microphone. The fluctuating light goes to the solar cell which turns it back into electricity.

That then goes to this amplifier where it's turned back into sound. Well, thanks for watching! See my channel, rimstarorg for more neat tutorials like this. That includes one on how I made this laser communicator. Another on using sunlight instead to transmit sound. And for variety, one about Scareduino, my shoulder mounted skull controlled using an Arduino. And don't forget to subscribe if you like these tutorials, or give a thumbs up, share with your social media, or leave a question or comment below. See you in a bit!.

Microinverter Test Using Agilent SAS Part 2 of 11 Solar Cell

I have here an individual solar cell. It looks like this and when it gets illuminated it puts out DC voltage, and this one puts out about half a volt to a volt and the short circuit current on it would be probably several amps two, three, four, five, maybe even six amps at full sunlight illumination. So it's a small solar cell also known as a photovoltaic cell or PV cell. And these, to get more current out of them, would be put in parallel. To get more voltage, they would be put in series. And to totally increase.

16. Solar Cell Characterization

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Playing With 240Watt Polycrystalline 60Cell Solar Panel

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