Відео

Awesome!

God sure programmed in a lot of mysteries to unravel. Thanks I never understood this at all. Still don't but maybe closer now. Is the same thing meant with headphones and speakers listing impedance?

...My Golden rule comes to mind in this example : "Nothing happens in 0 time " !!

I wouldn't say that the characteristic impedance is something the Electrical Engineers made up to describe this behavior. It is a value that is found when working with the Partial Differential Equations that describe transmission line behavior. Other than that, this is a great demonstration of characteristic impedance and how it affects transmission lines.

Your original video was perfect. However, many people don't understand how you packaged your ideas in such a difficult topic for delivery, even some who are engineers. So this explanation is good for them but I feel it was not really necessary. I do have one possible contribution if ever want to repeat this or something similar. Although it may not change the results of your demonstration much, you might get better measurements if you use a differential probe on your scope. Even if you say to me ... "the circuit was floating, I used only one probe and its GND was the only connection at any one point along my circuit, so it should be OK", I'd say ... there is still an imbalance between probe GND (because antenna-like low impedance) and probe TIP (because of high impedance). If you use two TIPs then that is no longer an issue. Then also, you can use another probe at the battery switch to trigger your scope and you won't have any impact on your measurements because of ground loops (I'm not referring to quantum effects of course). Added, for the "switch" you can use a two MOSFETs to connect your battery driven by a clean pulse, like a 555.

sweet!

Cool.

I was today years old when I learned that your alpha phoenix emblem is an alpha. I had to see the beta phoenix to realize this

Make this with water please and more complex

Retired Electrical Engineer here, this has been a rather interesting and impressive demonstration.

Attenuation. Half Bridge Rectifier Has a Diamond shape split circuit thingy, the sine wave got chopped up and split half to the left and half to the right... When any resistor are placed at one of the half bridge rectifier left or right split... If both combine again, the time phase shift thingy would be noticed and it overlaps on the sine wave causing merged sine wave from a time phase shift version with resistor and a normal half bridge rectifier. This part, how to tweak the frequency back to its original without distortion. Is this too complicated because I don't know the words for it.

Damn he really took a huge bite out of it too lmao

I guess the sudden closing of the switch acts as a step input or in other words a high frequency pulse which determines the 150 Ohms in the case of your circuit. Is my understanding correct?

+1 Sub Excellent work!!!

Dude, that shot was NEXT LEVEL. Thank you SO MUCH for sharing the "behind the scenes"! I knew you had a "green screen" ACME hole, but the green dumpster is absolutely hilarious. You rock, you're amazing, and don't ever stop being you!

AlphaPhoenix + Electroboom = a complete and well rounded electronics education.

Hmmmm. Probably better to think in terms of fields, rather than "electrons moving" (which is also right, a bit but less useful). Once electrons are abstracted away into electric field (displacement field) and magnetic field, we can see thst the energy is propagating at lightspeed (depending on √με). Energy is present on the wire being shuttled between H & E according to the local impedance. The vector cross product (the "Poynting vector") transfers the energy. If the timing between E&H is just so, and they're oscillating - the pulse of energy can leave the wire entirely and radiate as electromagnetism (in free space's 370Ω characteristic impedance). Still, I was thinking about this a few months ago. Whilst the fields represent capacitor energy with electric field, and inductance represents magnetic field due to currents it has _lossless_ impedance, it can only exist as *changes* so there is no "DC" real part. This is where the world of real resistor heating energy is very different to field energy existing only as differentials.

This is wonderful - thanks for doing it. When my favorite best prof in the world taught us about this subject in Transmission Lines class, it was like getting out of jail. I'd worked in TV & radio for several years as a technician, and couldn't make heads or tails out of listed impedances.

hay, great video. i have stuggerd with impedance for some time now but your explanation helped it click. i am a very practical learner however so could you please share the circuit you have there between the wire under test and the scope. thank you.

I tried to buy two holes from Acme but they fell into each other during shipping :(

Absolutely amazing stuff

Wait, I thought electrons were indistinguishable. How do we know the swapping occurs, if [e0,e1] can't be differentiated between [e1,e0]? I'm missing something.

This is hilarious! It was pretty good in the original after post. You did it nonchalantly I wasn't even sure if it was a joke or purpose or not.

Just bending the laws of physics (which you already do) would have probably been easier.

I will admit when watching the original video I hit back a couple of times to double check 🤣

Help i bought an acme hole but the box got shaken to much. So the box fell through the hole while it was still in the box. The delivery guy wrote on the slip that the box is in a neighbour-dimension.😂

I've definitely been watching too much MCC, because every time I hear "hole in the wall" I hear Minecraft pistons firing, slime block sounds, and a lot of Minecraft foot steps

It wasn't an actual hole in the box?!

To switch the Hex schmitt trigger inverters quickly you need to supply current to the IC over a large frequency band (Fourier analysis), which means you have to have instantaneous current flow at high frequencies to minimize the signal rise and fall times, meaning smaller value supply capacitors (higher self resonance) as you get closer to the IC power pins while minimizing the device lead inductance (lead length). But, you will quickly be limited by the IC package internal lead inductance. You will have several capacitors in parallel of different values and types all working together to meet the high frequency IC switching current demand. The aluminum electrolytic capacitors in the video have much too small a self resonance frequency to supply the needed current to switch the IC quickly, and the bulk capacitance is largely negated by high inductance of the long lead lengths.

That green trash can ending up there is like one in a million. Congratulations!

Excellent content .

i was quite baffled how you composited a hole into the shot which actually WORKED WHEN YOU REACHED YOUR HAND AROUND... i rewound, took a moment, and felt quite silly

That is so brilliant, dropping it through so it's just a comp and your fingers will be at the right depth and then you have the footage! So all you had to do was extend the frame backwards with a mask! Thank you so much for the pre-composite footage!

It really was slick in the actual video and was one of the better Acme jokes. Bravo and compliments of the season.

Lool, sweet! Hope you and yours have a wonderful Holiday and Happy healthy New Year 🎊

WITCHERY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Amazing

yooooooooooooooooooooooooooooooooooooo

Matthew 11:28-30 ESV Come to me, all who labor and are heavy laden, and I will give you rest. [29] Take my yoke upon you, and learn from me, for I am gentle and lowly in heart, and you will find rest for your souls. [30] For my yoke is easy, and my burden is light."

Perfect

this was an extremely good visualization, cleared up a lot of questions i had in mind, thanks

This is so far beyond me, but also makes so much sense. Electron and electrostatic force are inseparable.. I can only imagine they have that force because of their angular momentum. In my head, (uneducated in such matters) thinking of it like a planets core creating it's magnetic field.. I hope one day to fully understand all this and rid myself of my silly notions.

Hey your main channel isnt available , it says the page isnt available .

someone should do a video on the closely related topic, "jacobis law" or "maximum power transfer theorem"... a power supply is not just a supply... its part of the CIRCUIT.

I like this explanation because it manages to adress characteristic impedance without going into capacitance or inductance, just transport

my favorite thing about your videos is you ask and answer the same questions I ask myself when you discover something. amazing channel I hope to see more on electricity, it's something I'm very interested in 💪🏻

There is displacement current my son..

30:30 - 31:01 me explaining to the officer why he cant give me a ticket for going 80 in a school zone

How long do you think this would take to replicate? I am planning on doing this for a 1 week project, but I am unsure if that is enough time.

I guess this is also why, when you do signal transmission, it's really important to match the impedance. Reflections would interfere with the signal you are trying to transmit, so you want to absorb them with a proper impedance. Old ethernet cables (BNC) used a 75 ohm terminator at the end of the line exactly because of this. It would be interesting as a follow up if you could determine the actual math and physical characteristics that make a wire a 50 ohm vs a 75 ohm vs a 150 ohm impedance, and also how it affects audio signal transmission (e.g. impedance matching in speakers, and how mismatching impedance can affect audio quality). You can even get into radio and antennas and discuss ROS/SWR meters.