Oscillator tutorial in HD!

[oozytes]

Thanks for taking the time to make this video;)

Was hoping for an inductor/capacitor based oscillator tho :(

[XxWearsMexX]

New in electronics here... Can I use different capacitors while building the square wave oscillator? (555 timer)

[lolypopboy777]

How can i make a saw or sawtooth?

[gammainn]

The second circuit that's shown. is it possible to modify it to use with a guitar, controlling it's pitch with a pot or something you could use as a "whammy bar" ?

[KyleCarrington]

@ 1:42 i can host my own Rave, classic LOL - Man you are funny.

[jdflyback]

@Afrotechmods what is wrong with powering the Lm324 with a single nine volt battery and calling the negative terminal ground? Please respond

[fairyheli2]

so with a transforer you get an ac output?

[JippysProfoundings]

You sound like my tech teacher from middle school? Is that you Mr Beck?

[stickygreenbeats]

have fun pretending 2 be r2d2 lol

[mrspunkaay]

I'm only 12 and I understood almost everything...scary

[ume8555]

love ur video..hope u can make a video about dc boost converter

[igot1i]

I'm no engineeer....but I did understand the part about hosting my own rave. I like that idea.

[jennabon]

loved it! fabulous video, easy to understand, and you're riotously hilarious. thank you.

[ferfr01]

Great, simple awesome!!, you make it so easy but at the same time smart, it was the best video I've seen about oscillators, you cleared all my doubts, thanks!!!

[2085418171514]

Super Awesome tutorials!!! Also a suggestion:

go to your youtube account settings, click manage account, and at the bottom turn off the ability for youtube to put those dumbass ads in the middle of your videos. You can do this because you own all the rights to the videos...

Keep posting, You Rock!

[eradubbo]

heahea, you're funny!

[TheSlegos]

1 person has no idea what was just said!!!

[laharl2k]

lol isnt that the delorean's time machine's panel from back to the future at 0:50? XD



[perazaroberto2]

you are number one

[gabrielfinol]

Best tutorial about electronics on youtube keep it up!!

[obaidish]

great voice.i like it so much thank you.

[emerybryant]

lmao A MEXICAN WAVE!

[BabaGanoush69]

One person disliked because they're stupid.

[Hopper3513]

Mexican wave

[nathan82206]

mexican wave! HAHAHA you're so great dude, I'm glad I subscribed. you're second best of my subscriptions next to EPICMEALTIME.

[rtty21]

"I can host my own RAVES!!!!!"

[gymkata98]

I have really enjoyed all of your videos. I am an electronic engineering student through DeVry University. Since all of my classes are online, it's so nice to watch your videos when I don't understand something! Thank you and PLEASE keep what you are doing…you are helping people!

[JGalva88]

So if I build this circuit and connect an Antenna instead of an LED to the output I be sending out a signal correct?

[Afrotechmods]

@JGalva88 yup. Don't expect it to radiate very far though.

[JGalva88]

@Afrotechmods Ok, I was expecting that to work. I only need a few feet, so distance is no problem.

[TehJordanIsWin]

@Afrotechmods But if you attached one end of a transistor to the oscillator, and the other input to an external voltage source, and the output to the antenna, shouldnt it radiate further then? Or maybe an amplifier to the oscillator output?

[kiravakia]

@Afrotechmods

do u hv a tutorial on how to use a oscillascope?

[guitarslf132]

@Afrotechmods if that would work could you not just connect a bare wire to the speaker out on your hi fi amp and add a coil(or something)?

[TheDrivenMind]

@Afrotechmods Well then, this begs the question: What determines signal strength, how can I measure/calculate it, and what is the most effective way to generate strong signals?

[lacerta999]

Sorry to bother everyone, I have a science question I need to do to calculate Oscillation Amplitude?... I have googled it and not really found anything beyond overly complex equations. To get Oscillation Amplitude do I measure from peak to peak? (Top of the top peak to bottom of the bottom peak etc..

[Afrotechmods]

@lacerta999 Amplitude is defined from 0 on the vertical axis to the peak of the wave. So for a perfectly symmetrical sine wave the amplitude would be half of the peak to peak voltage.

[lacerta999]

@Afrotechmods Holy moly, thank you so much!

[HHOhybridBuilder]

Hi!!! Can I use the pin 3 of this 555 oscillator to trigger the gate of N channel MOSFET? ( IRFZ 44) I would like to trickle charge a 2 volt lead acid battery from a 12 volt Battery.The load will be the 2 volt lead acid battery. THANKS

[Afrotechmods]

@HHOhybridBuilder You can use pin 3 for that yes, but I don't see how that would help you trickle charge a battery

[HHOhybridBuilder]

@Afrotechmods I'm so sorry what I meant was to fully charge the 2 volt lead acid battery. The source of power is a 12 volt lead acid battery and I'm replacing the LED with a 2volt lead acid battery to be charge up.Thanks for the info.

[adjustmentlayer]

excellent. I want to be R2D2!

[MrMegaBaitz]

Hi friends!

A quick question. When I measure the frequency of my scope's calibration square wave I set the cursors from one rising edge to the next one and get the correct 1GHz measurement. But when I tried to get my arduino's clock I had to mark two wave lengths to get 16MHz. What am I doing wrong?

[TheOnedeadguy]

could the quadrature oscillator be used at 60 hz? :(

[sypha0x]

Lolol funny @ "hosting your own Rave" lol

[Ciaran55]

good video that, thanx! better than those crappy expertvillage vids haha

[blackdragonx1186]

Please upload more videos! They are amazing!

[malibudream]

I watched all your videos and have great fun and pleasure. Thanks!

Your explanation is much better and clearer than in many books!

[MultiCreek]

in some 555 timer circuits i don't see pin 5 is used...why did you used it here?

[wawa1196]

i love mexican waves

jk

[odessa999]

Thanks for this, has helped me great deal. I also bought the same scope you use!

[smartpartzzkidd]

hahahaha

[zker666]

Mexican wave, genius, you are funny and a great teacher (:

[Terrormink]

Egg salad. Wicked tutorial once again.

[petipenner]

you should become teacher. really. best tutorials.

[palmisano]

Did you actually solder all those rave LEDs just for this video?! lol

And I see an Axon microcontroller! Microcontrollers are the best way to create an oscillator these days. For example, an mcu can do crude speech output, and not just sound like R2D2.

Squirrel tails oscillate.

[goompapa]

full on rockage!!! So when you starting your own radio show?

[arugulatarsus]

Buffered by a ttl IC and viewed on a high freq scope, I am hard pressed to find anything that is not a square wave. Maybe if you add a low pass filter or something... ;) but when you take a probe and look at the crystal you showed as a pic, you get a sin wav.

PS. Does your railgun still work?

[arugulatarsus]

Afrotech, I love your feed, I punish students by making them watch it when they don't want to use a scope. But a crystal will generate a sin wave.

[Afrotechmods]

@arugulatarsus Not when it is buffered by a TTL IC and viewed with a high bandwidth oscilloscope ;)

[Arthur61987]

You're hilarious. I learned and i laughed, thank you.

[rlewis1946]

Master teacher! Thanks for sharing your knowledge.

[fbpoulsen]

I love your tutorials!

[chickenmunt]

Another amazing tutorial :)

Though I was kinda hoping you'd get into RC oscillators. Or would they be not so basic oscillators?

[Afrotechmods]

@chickenmunt RC oscillators means oscillators based on resistors and capacitors. I described two such circuits in the video. There are hundreds more out there. If you meant that you want to know the math behind why oscillators are inherently unstable systems etc. well that's way too much to cover in 1 video.

[trance183]

@Afrotechmods Amazing tutorials!

[IncoherentRussian]

Another excellent tutorial^^

[ArcadeGames]

LoL Mexican...

[afdhalatifftan92]

0:39

Mexican wave...

Lol!! Hahaha!!

[cristoretornebiblia]

Great tutorial afrotech, I need an Ocsiloscope buddy