TheDroidBay yep

Totally. I just realised I have the components to make this too... It's gonna be a long night

I feel you

@TheDroidBay I like how the comment has 555 likes hahaha Ah man its not 555 anymore

This is better than anime, and possibly at least 1.667 something times more entertaining than watching hentai

that's because he doesn't have a thick middle Eastern accent you can't understand

totally agree.

Kipper Klank as a middle eastern, I agree. damn indians ruined engineering videos.

@@Bu7MaiD075 yeah stick to the Poppadoms :)

It's also the best visual explanation I've seen of how a decoupling capacitor works. Excellent stuff.

Well nearly all computer Innovation is due to electrical and electronics engineering and software just comes later. All initial software was and is made by electrical and electronics engineers as it is extremely low level

@@PPSRHD Yeah and that's all down to mathematicians and physicists. Electronics just comes later. Not sure what your point is. I don't think you have one.

@@aidencoder im guessing hes trynna say that electrical is harder than software because it goes more in depth....

It really does feel like programming. The reason why is mostly because software engineering is based on electronics and hardware stuff. Similarly, programming feels like electrical engineering (at low levels) since both software and hardware are so closely interlinked at low levels (think of programming in C or C++). Edit: I _might_ not be fully accurate here so excuse me if I got something wrong

@@timecubed you're right, software and hardware are equivalent and the distinction is only where you choose your level of abstraction. All software can be implemented in hardware.

This is bought cheap not as a timing capatitor, but as a DC-filter it is working fine.

If we allow for -100% tolerance, I got some 1 GF capacitors to sell you.

@@lavalamp3773 ah, yes, I've also seen pieces of wire before

This is the funniest hardware related thing I’ve read in my entire life

This is why Electrical Engineers always look in the datasheet first, even for a simple capacitor ;) Electrolytic capacitors age, the electrolyte dries out over time, this is why it is overdimensioned. 1uf is the guaranteed capacity at the end of it's rated lifetime. Electrolytic capacitors are usually used to filter DC Voltage for power supplies and stuff like that. They are normally run at around 75% of their rated Voltage and at elevated temperatures which accelerates ageing, if it had only 1uf from the start it would die fast. Electrolytics are a bad (and expensive) choice in this case, for a circuit like this a ceramic capacitor would be better but sometimes you got to work with what you have at hand.

@@TheeCK1357 lol

@ Andrew Hicox I'm with you. Built my first AM radio in the late-middle 70's, and since the middle 80's have been learning multiple coding languages. These videos have rekindled a hunger for the breadboards. Now to get my wife to understand. LOL

​@@BillAnt We need less incels in the world, not more!

Looking back at them, the Forrest M. Mims books are terrible, or at least “Getting Started in Electronics” is. That’s probably why you gave up on hardware. It’s certainly what happened to me. It goes straight from explaining what an electron is to giving example circuits with totally inadequate explanations of how they work. Digital signalling circuits are covered but it doesn’t even explain what a pull-up or pull-down resistor is for, or even tell you what they’re called. There are just these mystery resistors in the example circuits that aren’t even mentioned in the text. I read it cover to cover and had no idea what was going on. I don’t know why people like them so much but I’m pretty sure it’s just the cute illustrations and the novelty of a published book being written on graph paper. As an instructive text, for me it was worse than useless, and set my interest in electronics back ten years.

Have a look at the Tinkerforge components.. as a coder you will *love* them. I've created amazing projects with them.. the end results make you look like you're an electronics pro.

"Showing the 2 resistors and cap all in series on the left is by far the best way to visualize this" I agree 100%

Can you explain this a little more?

How does t=R*C*LN(1-(Vpresent/Vmax) become t=R*C*LN(2)?

​@@NonEss3ntial The output voltage of an RC circuit at time t is 𝑉 = 𝑉max*𝑒^-(t/RC) ∴ t = RC*ln(V/Vmax) For an A-stable multivibrator, charging and discharging happen between 2/3Vcc and 1/3Vcc, respectively. As initially it starts from zero charge, ∴ ON time, 𝑡 = (time taken to reach 2/3Vcc - Time taken to reach 1/3Vcc) t = RC [ln(2/3) − ln( 1/3)] = 0.693RC

Thank you so much! I am an EE student and this is still in my notebook of problems to figure out. Thank you thank you thank you. @@g73hc3gsv3i

Great you are the best teacher with detail explanations

charles beauville I second this emotion. This is just very well done.

Yeah I've been trying to understand analog circuits for 3 decades. This video alone might've gotten me over the learning curve.

@@fernwood Hey, there are some excelent tutorials on youtube and on the internet that I can show you if you want. What is your interest in them?

Just a question why you switched the AE to SE as I also seen a lot of AE doing this. Tho. asking as my little brother is about to enter in STEM college and somewhere AE is we are considering.

I don't know if you could see this or not, but my only advice to you if want to create something is take break, and try experience with knowledge you have .

i know right! I myself am going into a field of IT i dont think can get much further than this, the closest I've ever gotten to this was a build it yourself toy wire maze thing that beeps if you touch the hook to the wire, so I know next to nothing about this stuff really, and yet something about the way he explains things is just so genuine and so complete that it just keeps drawing me back. A real shift from the "this works like this, that works like that, plug this from one into that from another and it will do this because that's how it works" feeling you get from many instructional videos, or even schools.

Holy shit that's a cool connection. I'm not an engineer of any kind, but that makes definite sense intuitively.

The analogy between electronics is extremely close. Voltage is pressure. Current is, well, current. For any basic electronic circuit you can literally build a hydraulic simulation of it. I think I've seen a learning kit that actually did that ("for children" ... um, yes, I would buy it for "my child").

@@eritain When I try to explain how resistance and capacitance work in AC circuit I always talk about seasons. The light pressure from the sun is highest on the summer solitice (northern hemisphere) but that is not the hotest time of the year. Athmosphere acts both as a resitor and an accumulator for the heat. So the max heat is phase shifted to about August. Same thing happens during winter when lowest light pressure is winter solitice, but the coldest time is in January-February.

Well at least you're marching to the beat of your own drum and not to a 555. ;)

That's because institutions are profitable business and they want your hard earned money to keep you in debt (poor) while they stay rich. They only teach you enough about the topics but force you to learn on your own. Then again it may also come down to the individual institution and professor. They won't teach you everything you need to know in a concise clear manner in the shortest time possible. The want to stretch it out over as much time as possible and even throw in a few bits of confusion just so that you would have to take another course for another semester so they can make a few more thousands of dollars off of you. Now as for Ben on the other hand; he has the knowledge and capability of building such systems and he actually enjoys sharing what he knows through his public KZfaq videos. He understands that your time is worth something, so he designs his videos with accuracy and just enough details and information needed to actually understand what is happening within the circuits where all of the mathematics, the circuit diagram, the logic diagram, the truth tables are all taken into consideration and to top it off, he uses breadboards to demonstrate the theory by putting it to practical tests while explaining where all the connections are going to and from for the direction and amount of current from one part to the next. His videos are by far the best illustrations for generally anyone to understand the internal workings of computer hardware, either it be the CPU, RAM or some other device that uses circuitry and memory. This is far more profitable than spending 20 - 80k for a 4 year degree at a University where you still walk away 1/2 confused...

@@skilz8098 totally depends on the country though, and totally not in europe lol

Thank you

It only charges from 2/3Vin to 1/3Vin. The calculation for that would be: 2/3*Vin*exp[-t/(C*R)]=1/3Vin t=ln(2)*C*R. So you where right about the coefficient, but it doesn't charge or discharges half way. Im sure thats what you meant, but just for clarification.

lol I've seen this constant so many times (in Chemistry; physics; etc.) that when I saw .693 in the video I immediately know it's ln(2) lol

I knew it seemed familiar!

@@yiliangliang5694 especially in electrochemistry and ionic equilibrium lol and chemical kinetics

if it's a tolerance thing, why are they all off by the same amount in the same direction?

my best guess would be that they're all from the same batch, so they all act similarly

Also I have seen 555 circuits which don't trigger because the charging current is less than the electrolytic capacitor leakage! Electrolytics vary wildly with temperature too, so best to keep the capacitor

Because then they can sell 1uF and 2uF capacitors, but only make one.

The key to this is that electrolytic capacitors are use almost exclusively for filtering and DC blocking. In these applications, designers want at least a certain capacitance value, which explains the -20/+80 tolerance. Also, because electrolytic capacitors tend to drift to smaller values as they age, the manufacturers try to design them to start their lives at the high end of their tolerance range. This makes electrolytics generally unsuitable for timing circuits. The same is true for ceramic capacitors using certain ceramic formulations (sorry, I don't know which ones of the top of my head), but they are generally much closer to their rated values than electrolytics. If you want a precise timing circuit, the best bet is to use either polystyrene or polyester capacitors, but in any case, look at the datasheets. Capacitors really AREN'T purely generic components. Of course, it's much harder to find 1 µF capacitors in polystyrene or polyester, so the resistor values also have to change. Not a big deal unless you want a really low frequency, as in this particular circuit.

Eso pacho

Pacho u_u hello from Colombia too, the video has auto generated closed captions so while you are learning about 555 you also learn english :)

Hello from America. Fuck yeeahh! Bet you dorks wish you where here. 😂

@Pumpkin Idk. There's a reason I decided to stay on Reach you know.

@@pumpkin6429 What is wrong with you? American exceptionalism maybe?

What a wonderful video. The way you demonstrate power supply impendance. We shoid teach this at university this way

Or gnomes and they come out and complain when the sand for their hourglass runs out.

Or just plug it into to the turn signal regulator, but you might want to slow the pulse down just a little bit...

I don’t think the 555’s output is able to deliver enough current to trigger a turn signal relay. Even if it’s able to do so for a while, it will become quite hot.You’ll need to add a big transistor in between or a FET.

@@Engineer9736 no, you would use the turn signal clicker instead of the 555

Can you use a voltage follower to get the extra current?

@@Engineer9736 What about an optocoupler? Or even a relay-optocoupler combo

Indeed. It would be interesting to find out if the capacitor was equally inaccurate at higher charge currents, and whether the electrolyte barrier would reform over time if the capacitor was kept in constant use. As I'm sure you know, the electrolyte itself is conductive, but passing current though it forms a thin insulating layer of oxide on one of the capacitor plates, and this thin layer is what makes it a capacitor (and indeed a _polarised_ capacitor).

That tels me that we measure the load time of the capacitor, I usually measure UN-load time, with the opposite result of course (many of my parts are 20jrs+) Because my first 5 555 experiments went wrong, I did not think much of if, now I am gonna try again... thanks to Ben and all use full comments.

and here i am thinking 'mfd' just stood for 'mf' doubled...

I was so confused about why his capacitor is plugged in the wrong way round because i only payed attention when you could see the top of it...😅

Can't tell if this is legit or a joke...

@@laughlinmccooey8575 its a joke theyre probably cheap +/-100% caps

Just Cause THANK YOU

That's what threw me off looking at that component.

A repeating timer? That's not even a good answer.

you only need one count to trigger a device- a big capacitor and a comparator would do. don't waste an entire 555 timer! unless you need a count down timer, then you can use the 555 to generate a clock to run a counter. put the trigger on the most significant bit 😜💣

😂😂😂😂😂

Did you see vomit on his sweater already?

Ilustrado - Well on the surface he looks calm and ready, but maybe he's actually nervous

@@maleknecibi but he keeps forgetting what he wrote down

😂Its just single core wire with the sheils on though

Thomas Richter it is not called a 555 because of the resistors. That is just a coincidence.

its not a coincidence...

That's a common mistake. There's no sense behind 555's name. Here you're able to read an interview with Hans Camenzind (an author of the scheme) about the name www.quora.com/Why-is-IC-555-called-555-Why-not-111-or-any-name

Yep its coincidence, that is (from memory) the 555th IC they made

Oh, man... Just a cite from Hans Camenzind (an author of the scheme): "Signetics had “500” numbers, and the earlier product I worked on was the 565, 566 and 567. It was just arbitrarily chosen. It was Art Fury (Marketing Manager) who thought the circuit was gonna sell big who picked the name “555”"

Also an ex-aircraft mechanic. I was supposed to be a computer programmer but got switched to crew chief in basic. I wish I could have been a specs guy at least because my favorite part of the job was always going through the fault isolation trees and the more logic focused parts of the job. These videos really scratch that itch for me

Actually, it is -ln(0.5), which is the same as ln(2)

@@DantevanGemert you're right.

Which book?

Dick Fageroni In fact you can, but its pretty nasty solution. Avalanche effect in trsnsistor makes it conductive, dischsrges a cap and the cycle repeats. But the edges of such clock are nasty snd it has a pretty nasty voltage spikes.

Dave B 20 Hz is incredibly slow......so no

Yes, that is exactly how that works

mentalyUnstable r/woooosh