Five 555 Circuits You May Never Have Heard Of

[@GrowlyBear917]

I used a 555 in college to transmit audio via laser beam using the analog-to-PWM circuit similar to what was shown in the video. This was in 1977, before it was a "thing" to send music or voice over light-beam links like fiber optic cable. I could have been a thousandaire if I invented something back then!

[@havelsand]

Please please use your own voice! ❤ It‘s unique.

[@Raul_Gajadhar]

I hope he Tries Kamala Harris's Voice in his next flick?

[@DoctorVolt]

What will happen if I'd use the voice of D. Trump?

[@Enigma758]

@@DoctorVolt Then no intelligent person would believe a single word you're saying.

[@MuzixMaker]

@@Enigma758maybe he should just cackle after ever sentence.

[@kylek29]

Wanted to post this. I like the accent and do not like AI voices. I get why it's easier and can help "clean up" narration, but I prefer the authentic voice.

[@majorpygge-phartt2643]

I've used a 556 dual timer to make a "cooking reminder", which is basically two 555's arranged in a push-pull circuit slightly modified so that one output drives a piezo bleeper for about one second every five minutes or so, to remind me to turn my fish fingers or burgers over on my grill before they end up cremated...

[@Fusimester]

20 years ago, I borrowed a book from my classmate: 100 recipes with 555. I saw an AM radio receiver and FM stereo transmitter with 555 in it. :-) Whatever I type in Google now with 555, it gives me some results. There is even a mouse catcher and a chicken feeder.

[@DoctorVolt]

But I bet that there was more than just a 555 in the stereo FM transmitter.

[@Keith80027]

I love this / As a Electrical Engineer that has not built anything in years, I thinking I need to buy some tools and start playing around again. Thank you for this motivation.

[@PeterLGଈ]

Same here. It's been a decade since I've held a soldering iron, and my fingers are beginning to twitch 😂

[@rockpadstudios]

I was introduced to the 555 in college in the early 80's. One teacher was obsessed with collecting 555 circuits. You made some great practical 555 circuits. The parts combination in the 555 was just perfect. I wish SOC's had a few 555's built in that allows the flip flop to be reset.

[@kf5hcr176]

Your voltage control looks like a solar charge controller of another designer I built around a 555. Thank you for the presentation. I Never knew most of this.

[@paradiselost9946]

lol, ive used one for fuel injection... crank (ignition pulse?) can trigger monostable on every revolution, use the MAP (or TPS) on pin5 or control to give a pulse from about 1mS to 5mS (give or take, injector flow, engine size, etc dictates...) and shes running. can change the PWM curve a bit with an RC delay on the map/tps signal. throw in some trimmer for a bit of tuning... good enough for a gokart etc.

[@DerMarkus1982]

That's the spark! 🤭

[@paradiselost9946]

@@DerMarkus1982 really? could have sworn it was a fuel injector i was triggering...

[@RexxSchneider]

The only issue you need to address is that the bipolar NE555 tends to have an asymmetrical output swing on pin 3, especially when supplying some current. It won't swing as close to the positive rail as it does to ground. That means you don't get a 50% duty cycle as you might expect when using feedback from pin 3 (output) to pins 2 and 6 (trigger and threshold). It's not a big deal most of the time, but it might lead to unexpected results in some circuits. It's worth noting that the CMOS versions of the 555 don't suffer from the same problem, although they can't deliver as much output current as the bipolar version.

[@majorpygge-phartt2643]

In my experience CMOS outputs are gutless, they can't even drive a lousy LED unless you fit a transistor to boost the current.

[@RexxSchneider]

@@majorpygge-phartt2643 It depends on how much current you need to drive your LED. of course. Modern LEDs can be quite bright with 10mA or less, and cmos 555s like the ICM7555 will sink or source that will around 0.5V loss even with a 5V supply. If you have to get 100mA - 200mA out of your 555, then I agree the cmos versions aren't up to it, and the bipolar 555 is the only option, but you have to expect as much as 2.5V loss in the output.

[@lohikarhu734]

@majorpygge-phartt2643; well, du depp, your experience doesn't apply to every cmos device! the TI cmos 555 sinks 50 may with a Vsat about 1.5 V at Vdd of 12 V...it has less output high drive at similar Vsat, more like 10 mA at 12 V Vdd, way more than enough to drive an LED! (Unless it's a big'un)

[@Bob-1802]

As an amplifier, it seems to sound quite good. The speaker would sound much louder inside a small enclosure.

[@nara49veera12]

To say the least, welldone!

[@JageeAgain]

Very good explanations of the circuits.

[@sintaklaas6427]

Most channels are trash, I m happy I find the quality this time Thank you, very well explained

[@vicferrmat4492]

Thank you.

[@felixgasroorka1696]

Just awesome! Best regards...

[@zilog1]

aww. I wish he would speak. I like the way you talked. now I just feel sad and upset watching this video because I know you feel sad and upset about people not being able to understand you. And I'm sorry for that. but I understood you. 😢

[@raymondsmith1213]

The battery circuit was something I never considered, pretty fancy

[@markharder3676]

Very clever. Makes use of the comparator/voltage divider components.

[@poormanselectronicsbench2021]

Your circuit for an undervoltage limiter will come in handy for me, as I was needing to design something to create a "window" circuit, to trigger on at 13.6 volts, but then hold on over 13.6 volts and to shut off at about 12.9 as a low voltage, so, I designed a Everycircuit SPICE model to get my resistor, trimpot and Zener values, then I used a SPDT relay powered by the 555 output, but then used the NC contact to power a timer circuit past it. The only thing I wish you put on your schematic ( on the black background one, I now see it on the Kicad schematic), is, you need to hook up your pin 4 / RESET pin to Vcc, or nothing works, as I am kind of a 555 noob, and it wasn't transparent to me until I did that.

[@technical5880]

great job. thanks.

[@najroe]

there are also a radio receiver circuit out there (and a number of transmitter circuits), even a regenerative receiver that can listen to CW (morse cide) anc Shortwave AM, sadly my link to the regenerative receiver is dead.

[@ShannonJosephGlomb]

amazing video bro all of them are awesome especially the e fuse :)

[@rayherriott6517]

Duh! - never mind - I just found the link in your description! Thanx

[@IuliusCurt]

Heart breaking to see more and more KZbinrs move to ai voiceovers

[@electronicscaos]

Everyone is about easy money nowadays.

[@automated6225]

Interesting information, thanks 👍

[@1DR31N]

Nice 555 applications. When I was a student I built an astable oscillator with 1 diode instead of a resistor.

[@Braydan789]

You weren’t kidding, I have never heard of those 555 timer circuits, great job!

[@robertkalinowski6770]

So well know chip in so unknown circuits. Great!

[@Poult100]

I used to use the 555 all the time but much less so after I got into coding. This video has rekindled my interest. It is still so useful!

[@Raul_Gajadhar]

I hate people that has to write a code for where the use of only 4 transistors, 1 relay, and a micro-switch would last forever, and never have to worry about a bit-flip from cosmic rays, or data retention.

[@Poult100]

You hate people for that? They'd have to do a lot worse for most to hate them. It's a strong sentiment if you weren't exaggerating. But, yeah using an MCU for that is excessive. It's a product of cheap controllers though.

[@DoctorVolt]

There are actually microcontrollers that cost the same or even less than a 555 (and all the passive components around it). These may be the better solution especially for commercial product where every cent counts.

[@Poult100]

@@DoctorVolt funny how the world goes! However, the response of the 555 output could be potentially faster than a cheap MCU?

[@DoctorVolt]

@@Poult100I cannot tell. I measured a maximum output frequency of 300 Kilohertz for the TTL version of the 555 and around one Megahertz for the CMOS version. But I have never measured the speed of a low-budget MCU.

[@i-TEQ_power]

Lovely

[@rakeshkchauhan]

Make things beyond the routine applications and there are many many more ways to use 555. I made a phase sequence indication for three phase supply and its ok. may be making a true sine wave inverter using pwm function is a good idea.

[@tonyrebeiro]

Nice innovation.

[@Raul_Gajadhar]

I know of all of these circuits. What I was hoping to see was the AM radio circuit.

[@DoctorVolt]

I also tried it, but as there are no AM stations in my region any more, it only produced hiss and noise.

[@Raul_Gajadhar]

@@DoctorVolt Then get a [____] 1 Mhz oscillator unit and build one you [_______] you only need to test a tone, not broadcast a mile away, a foot distance would do. I am doing my best to be nice lately.

[@doktork3406]

@@Raul_Gajadhar What a pathetic attitude...

[@johnjones2786]

Very interesting.

[@williamogilvie6909]

The 555 is a very useful IC.. I used it a lot when I was an EE undergrad and later. It's good for simple projects. However people move on and the 555 gets left in the dust. A couple of times I have met people who use the 555 for everything they do. I guess if the 555 is not suitable for a project, they don't do it. Not good to fixate on one way of doing things.

[@colonelbarker]

This narration is very different to your usual style!

[@luckyrefrigeration9825]

Nice

[@rayherriott6517]

Great presentation! Helpful - BTW what software are you using to create those great animations?

[@lesallen9406]

They make a real good power mosfet gate drivers too.

[@Uraim]

hold on for a nanosecond, if this 555ic can make that pwm signal out, we can feed in two power mosfet at the outputs, it would be a good idea. I heard about the TL494 method, but never really from this 555ic. Would be a good project ngl.

[@Oldclunker-ge5zp]

Regarding the toggle switch, the feedback resistor at the capacitor should be a bit larger than 100k (eg 150k), because the circuit may oscillate if the feedback from pin 3 is too strong. It's a pity that the 555 only operates between 5 and 15 V, and consumes 5 mA. The CMOS version is so much more expensive...

[@igorperuchi2114]

I miss your german accent!

[@unfundedopportunities7278]

I wish this chip had commentary outputs, that don't crisscross. There needs to be an updated version with a few extra functions.

[@CarlosValeraLeon]

I have got to try building a guitar amp with that last one!

[@big_o1952]

I would like to understand how the electronic fuse circuit will work from what I see , is that the flip flop outpot in both cases will be low and as it is inverted the ic will always be on , therefore always turning off the mosfet so please explain to me what I have missed

[@DoctorVolt]

I cannot explain it better than I've already done in the video.

[@big_o1952]

@@DoctorVolt well in that case i dont think that such design will work. have you tried it practically ?

[@DoctorVolt]

@@big_o1952 Have you even watched my video (6:02)?

[@tomteriffi]

Is it possible to purchase the undervoltage protection board or file? I have an immediate use for one and your circuit would make my job easier.

[@DoctorVolt]

No, but you can make a screenshot of the schematic where I show it.

[@danburch9989]

How can I buy circuit boards designed by others that were made by PCBWAY? I used a 555 timer to pulse a solid state relay, 150ms on, 1000ms off. I used it to test 120vac traffic signal wiring circuits, I could adjust the on and off durantion as needed.

[@dalematthews8748]

Fantastic!! I've only really used the 555 as a timer. Were you in Breaking Bad 🤔

[@analog_guy]

Posthumous thanks to Hans Camenzind. RIP.

[@payloh_3328]

What software do you use for the circuit simulation?

[@DoctorVolt]

Circuitjs. You can find the link in the description.

[@frankywatte5646]

The 555 must be the most successful IC, and one of the oldest, together with the 741.😊😀

[@noktrnl123]

Nothing bad at all. Sorry I'm interested and will be indulge in comments as I've found. The only thing that I could make this better is seeing the oscilloscope input vs output at the end. Thank you for sharing regardless. I say "Share are the world! Be better for yourself and love all for information and making the world better.

[@VegasCyclingFreak]

I did not know that a 555 could be used as an audio amplifier. Very interesting! Is there any particular advantage to using this?

[@DoctorVolt]

I don't think so. But I find amazing that it works.

[@VegasCyclingFreak]

@@DoctorVolt Agreed, that is amazing.

[@rishivishwanath-l5x]

hey bro i am from India, so i had got a project from my school saying that i had to mimic something from the nature and use it in our project so i chose night vision raspberry pi controlled night vision car camera i have all the items needed for this project but i have no clue on what to start of with as i am a beginner, i tried searching for some tutorials but all of them were confusing and i really did not understand ur video, probably because i am a beginner, so could we connect through any call and discus more about this project also could u guide me on what to do for this project through this call.... waiting for your response as soon as possible... yours truly rishi vishwanath love from India ❣

[@johnslugger]

I made a very powerful cell phone jammer using a 555 and it even does the new G6 by driving a crystal.

[@MuriloMBarquette]

Nice video! So, is it possible to use the 555 as a ADC, if we remove de filter?

[@DoctorVolt]

Not really, because it has only one output.

[@MuriloMBarquette]

@@DoctorVolt thanks for your attention. Greetings from Brazil.

[@schefre35]

Theoretically, yes, it outputs a serial digital signal. But in reality it’s more complicated. Although the output signal is digital, meaning the circuit is either on or off, the timing remains entirely analog. This makes it challenging to synchronize the signal and define a start of a byte.

[@MuriloMBarquette]

@@schefre35 thanks for the answer.

[@ronaldglider]

And here the 6th thing the 555 can do: kzbin.info/www/bejne/o3XLf4SGqZ10pJI

[@arnavpawar256]

Please make a video about a custom CB band digital radio transmitter... I want to integrate a custom radio module because the available Arduino compatible modules just have low range... I hope you make a tutorial about a carrier wave generator atleast so I might use ASK protocol... Wishes!

[@richardsandwell2285]

The 555 was a genius idea, they are not perfect, but they are just so versatile. If you cannot build it with a 555 it is not worth building.

[@MichaelWysocki-ks5xt]

I need a circuit to turn a low voltage- low power device on and off repeatedly for a certain amount of time ( like on 2 seconds, off 2 seconds ) can a 555 do that?

[@georgeallen8860]

nice subed thumbed

[@zteamvideo2561]

I'm making a binary alarm clock to complete my transformation into full on AI slavebot

[@Cyklonus]

👍👍

[@matzebautwas8901]

I am not happy with your decision, not to speak with your own voice as well🤨

[@IANHANDS]

That actually makes you Sad . Grow a pair

[@markfarrugia8226]

Please use your own voice. We prefer it .

[@IANHANDS]

You prefer it . What is with the We dude . Best to just say stuff for yourself . Grow a pair learn to stand alone

[@user-rs8zg8ey2b]

What happens if I answer YES to the first question?

[@jagmarc]

WD40 in DIP-8

[@ksbs2036]

Too many advertisements early in the video

[@MarinusMakesStuff]

I find it interesting to see what we can also do with the 555 times, but in some examples I miss the 'why'. For example, with the toggle switch, why would this be used instead of using a simple switch that toggles by itself, mechanically? The other examples are pretty good and that undervolt protection is super useful for one of my projects :)

[@arthurdefreitaseprecht2648]

The toggle can be really useful for higher currents. A cheap pushbutton plus 555 and components can be (as weird as it might sound) cheaper than a high current toggle switch

[@thiloreichelt4199]

The toggle switch made with a 555 automatically resets when power goes off and on again, which a mechanical toggle switch can not do. Think e.g. of some big machine, power goes off and comes back half an hour later and now the machine turns on because the switch was left in on position. (Ok, this problem normally gets solved with a relay because of other safety issues)

[@GianmarioScotti]

All these are very standard applications for the 555. I am disappoint.

[@IANHANDS]

Bye

[@gordonwelcher9598]

Please no AI!!!!! Unsub and thumb if it persists.

[@IANHANDS]

Bye👋. Who do you think you are dictating to. Good riddance

[@dafoex]

A few people are saying about it so I may as well, but the Text To Speech: I don't hate it. Sure, your own voice is probably fine, but whatever programme or service you're using sounds really good quality. The only thing that gave it away was the two different pronounciations of KiCAD. I find it helpful to pick a pronunciation and tease the machine a bit. Find and replace all "KiCAD" with "Key Cad", same for "555" with "five five five", for example.

[@DoctorVolt]

Yes, but also natural speakers do not always pronounce this consistently.

[@jachfeng6201]

What those yellow spots on the wire of the schematic is for? I never saw such an ugly drawing!

[@JeremyCook]

Per comments, was that an AI voice? If so I am impressed.

[@DoctorVolt]

Yes, it's AI. maybe only those realized it who already know my natural voice which has a terrible accent and sounds much worse. (At least to my ears)

[@JeremyCook]

@@DoctorVolt My voice sounded pretty weird to me when I first started recording myself, but I've mostly gotten used to it. It's pretty hard to honestly judge yourself with this sort of thing I think. Perhaps you are right, I don't know, but seems like many people miss your actual voice. I'm seriously impressed with how far AI has come though. Wow, it used to be so obvious, but now you'd really have to listen for it.

[@andyp3834]

Mmmm, ok, im not ready for this, i better google what a 555 is, not the Korn song, if your 555, then im 666, terrible song

[@leveaudor8577]

Where is your beautiful accent? 😢

[@deslomeslager]

I am happy with the clear voice. Can you create an mppt circuit with the 555? I did find one online. A solar panel usually (not allways!) is able to give full power at 2/3 of the open voltage. Whenever I see 2/3 I think of 555.

[@lowerclasswarfare]

Leave the channel if you disliked his voice before. D i c k h e a d.

[@384cz]

AI VOICE DETECTED! I WILL UNSUBSCRIBE IF YOU CONTINUE POSTING AI VIDEOS!

[@IANHANDS]

Bye👋

[@AshmitaHarshat]

🎉🎉🎉🎉🎉🎉🎉🎉

[@flyingdutchmanindustries5877]

Who is talking ... or, rather what? Stupid A.I. computer narration. Thumbs down spanking👎