Great channel.

Was thinking this was a very educationally focused video until you said, "increase the voltage until it explodes, which I hope to do in a minute...." I saw that twinkle in your eye and I knew we could be friends.

Finally, someone explaining in a way I can understand. Super video, and excellent safety tips.

hahah loved the experiment. but what I loved the most was the way you speak. I can listen to you literally for hours :D Anddd subscribed

Good call on the safety glasses. Always pays to have eye protection whether you think you're going to need it or not.

Great video ! Thanks for sharing

Great tutorial I learned a lot, thanks!

Very detailed explanation, i learn something, cool video!!!

such a good video. thank you 🙏

This is a great video, glad I found your channel. Just starting out with electronics via Arduino starter kit. Looking for extra background info. Thanks for highlighting that LEDs have resistance. I couldn't figure out why my math wasn't matching reality. I have a resistor and LED in series. I see a voltage drop across the LED, therefore it must have resistance. The math in the Arduino book seems to be disregarding LED resistance, perhaps to make simpler for beginners.

I like the way you explained this.

That's funny started work again that's awesome lol! Thanks for nice Video : )

Thanks a lot

Super cool, I really enjoy watching your videos... have a great day 🙂

LED's make great Zener diodes ( 1v7 to 3 v ) depending on colour .... with the added bonus that they light up when your circuit is functioning correctly ! ..... should you want a higher Zener voltage put some in series , also ( off topic ) the EHT diode from a microwave oven also makes a good 8 to 10 Volt Zener diode ( tried - n - tested ) ...... DAVE™🛑

i was looking for exactly the same thing thanks a lot sir/bro...

If a 194 size automotive LED bulb specifies the following specs: power = 0.3 W, operating voltage = 9-16V and current @ 13.2 V = 0.035 amps, can you calculate the forward voltage for that bulb using that? V = 0.3/0.035 = 8.6V or would you subtract that number from 12V battery to get 3.4V? Im using an LED license plate bulb but the car turns off the bulb after so long because the Incandescent power draw is like 2.4W whereas the LED needs just 0.3W. So I’m trying to figure out what size resistor I could use to trick the car’s computer. Not sure if I can just take 13.2V and divide by 0.035 amps to get 377 ohms. Then to select the watt rating, use 3.4 V (assuming that’s the forward voltage) and x by 0.035 amps to get 0.12W so you could use a 1/4W resistor with an ohm rating above 377 ohms so a 1/4W, 390-ohm resistor for example. This seems like it should be a simple calculation for someone electrically inclined but even LED bulb specialty vendors have not been able to answer this for me. Do you know if my calculation is correct? Thanks for your time!

I had an infrared LED explode a while ago. It was rated at about 2 V, but I used it on a 3.3 V GPIO pin of my Raspberry Pi without a resistor. This wasn't a problem because it only ever got powered in short bursts to send out an IR signal to my fan. However, a while later, I rebooted my Raspberry Pi and for some reason it completely turned on the GPIO pin. The LED's cap flew across my entire room a few seconds later. I'm glad I didn't sit in front of it while it happened. I didn't try to reproduce it because I don't have too many IR LEDs left. I also killed some LEDs with 5 V in the past, but they all just died immediately with no visible damage.

Hey, I have a question... Would it be possible to safely step down U.S. power on a 100 vac Japanese device, using blue led lights?

Welcome. Why is the LED voltage constant between its two ends, approximately 2 volts? No matter how much we increase the voltage value. Can you explain that to us? Thank you for enabling the translation.

So I am trying to understand something. Can a blue led light change in the spectrum value (400nm - 500nm) depending on the voltage? Or is the Spectrum based on the makeup of the light itself and voltage will only increase the intensity of the specific spectrum of the light? For example: a 420nm blue led light at 3 volts will not change and increase to 460nm if the voltage is increased or decreased from its intended rating? Furthermore, if voltage does not have an effect on the spectrum range, what does? And how do they make a 430nm spectrum blue light different from say a 480nm lighter blue light? I see led lights that can be controlled and vary in color, is this due to the wave length of the electric signal, or something else? Also, I understand 2000k 3000k 5000k 6000k 10000k etc etc etc... but how does those ratings relate to certain color of spectrums? From what I understand, "k" ratings is ratings of all colors emitting at once. But it seems that the "k" ratings do have an effect on what spectrum ends up becoming more dominant or visible. For example: 3000k had a yellowish tent to it and 6500k has a white color. How does this "k" ratings change or why does it change the color at different values? I trying to relate this aspect with how they make some led lights with specific spectrum values that are only available to change the intensity of that color, not the color itself.

I got confused when you had all LEDs connected to your power supply at the beginning, when you were quoting the current that was flowing. If you were reading that direct from your power supply screen, then shouldn't you have been dividing the quoted value accordingly, since you had them wired in parallel? Secondly, even doing some simple division to describe what current was flowing where, wouldn't have been very accurate either, since the different characteristics of each LED would mean more current flowing through one and the other. At 3:44 in the link below, he gives a clear explanation of this. I think it is a good idea to have a separate window showing what is being displayed on your power supply, whilst showing your main DUT in the main window, as I ended up just guessing that you were doing mental division when quoting current flow, but at the end of the day, I still didn't know what current was flowing where. Thanks ukposts.info/have/v-deo/bXKgdoSOaqmo0XU.html

Should resistors be in series before LED. I’m just confused when it comes to the seven segment display. I see resistors connected to ground.

What's the model name of this power supply unit you using? It's nice and compact...

Nice what P/S are you using??

What a creat explanation.

How on earth 1) did that LED not burn out long before it did and 2) how did it come back on?? Mine fry and die with 5v input if I don't use a resistor, and certainly none have ever come back on. I'd like to know your special source. : )

at 1:50 when you said current will flow in through the longer lead (anode - positive) through the LED and out through the shorter lead ( cathode - negtive) were you talking in "conventional" terms? as the current flows from negative to positive and the LED-s are polarized...... isn't it (non-conventional) real life scenario that the current flows from negative to positive, so through the shorter lead and out the longer lead?

Funny how in English words like odometer, speedometer, calorimeter and dosimeter are all pronounced with the emphasis on the syllable before "meter" but nearly everyone pronounces multimeter with the emphasis on the first syllable. You're the first person I hear it prounouncing like the other words. So which pronunciation is correct?

I remember the introduction of compact florescent, then said to be "the future." A couple of items you show are good, EG, factors affecting life-span and "directionality" of light emissions. I'd like to believe mass production is responsible for lower-cost LEDs, but "sustainability" remains an unresolved question. For comparison, falling PV costs did not obviate energy inputs needed for production. (If the energy input necessary to produce a PV is subtracted from its life-time production, is it still a good deal, or environmentally friendly?) Given massive subsidies granted for production -- everything from cheap labor to lax environmental regulations -- it's hard to predict if -- this time -- the LED is the future. As for directionality, let's just say it: Structurally, LEDs "leak" out light that must be redirected to mimic what most consumers consider as a light bulb. It's an engineering challenge resolution of which deserves a fair hearing.

the new led for your house dont have a standard voltage! they are not 110 or 220 volts but rather are "RANGES" they are " AC85-265V " between 85 and 265 volts. while this sounds interesting that it will work on any supply i suspect this will effect the wattage ratings and in term its brightness! a 10 watt bulb run on 220 volts i would think would be brighter then one run at 110 volts! unless these can change their amperage ratings? can they change their amperage ratings and stay at the "claimed" wattage ratings? because most LED are in general 220 volts. so for the usa i suspect we get lower wattage ratings.

😅🤣 u are lucky... when i applied to much current through my L.E.Ds they started to smoke for a short moment... so to make things more fun for me.. i went outside and connected about 300 L.E.Ds in series and got a lot of smoke and a few pops.. 😂

cheap Chinese LEDs: If you want explosions, hold my beer🍺.

Why it is not possible to make a LED from pure silicon?

Very well made video but the info is not very relevant. No 1 uses this kind of leds anymore except for indicators, it would have been much more informative if you talked about and showed the current mostly used 5050, 2830, 3070 and so on kind of leds that have very different voltage and amp ratings. Right now i'm a little stomped trying to lower the current in a new kind of led driver from a 13w tablet lamp, no more easy 2 resistors current setting.

Michael Bay is disappointed

well, if u want to show some components explode.. connect some electrolytic capacitors backwards .. 😅🤣😂

Ahhh the smell of cancer.