Electronic Basics #20: Thyristor, Triac || Phase Angle Control

8 років тому

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1x 500k Potentiometer: amzn.to/1SpIsFp
In this episode of electronic basics I will present the most important facts about a controllable diode, the thyristor. I will also build a small experimental circuit to control AC voltage with the help of a triac.
Music:
Killing Time, Kevin MacLeod (incompetech.com)

КОМЕНТАРІ: 423

@ollythebest94 8 років тому

This video was a little bit too fast to cover the subject

@magna59 7 років тому

I think this guy is very good , but I think you need a degree or two to keep up with him .

@shanmugapriya9349 6 років тому

Yes it was bit fast

@abizhar-7583 6 років тому

agree.

@potatotech7378 5 років тому

all i understood was when it hits zero somehow it gives a signal of like 5v

@oOcitizenOo 5 років тому

yep, it was difficult to get to the point of the theory exaplined here at first, but if you watched this video three times then you could understand the basic concept (that worked for me)

@Afrotechmods 8 років тому

This is my fav of your videos so far. Well done!

@0Bariq0 8 років тому

+Afrotechmods My 2 favorite channels on youtube. yours and greatscotts's. keep up the good work.

@greatscottlab 8 років тому

+Afrotechmods Thanks

@atankent 6 років тому

Same. Afrotechmods and GreatScott are the best!

@ChathuraJayasundaraIMD 5 років тому

can you too make a video on this topic please

@kaustyagi 5 років тому

chutiya hai tu chup baith

@bdh4rd 6 років тому

Electrical Engineer here and I thoroughly enjoy the videos you post! Thanks for the good tips and refreshers!

@greatscottlab 6 років тому

Thanks for the feedback :-)

@BoomBrush 8 років тому

wow this video went over my head. im going to have to watch this a few times haha. maybe when its not 2am i should rewatch it :D

@ferarry13 8 років тому

i understand maybe every third word that youre saying when you get into electrical stuff but still watch ewvery video. good work man!

@greatscottlab 8 років тому

+Syko That's the spirit ;-)

@vidrogic1499 8 років тому

same problem, but gret videos

@matchlesmage0260 8 років тому

I understood nothing in this video

@mennims Рік тому

Let's get startedt! Been watching you since about 2014 maybe earlier. Love how much happier you sound in your newer videos. You seem like a sweet person, I hope life is wonderful for you and thank you for all the information

@yashdodia8048 3 роки тому

I WAS FINDING A VIDEO THAT COULD HELP ME TO FIGURE OUT THAT WHAT IS DIFFERNCE BETWEEN LATCHING AND HOLDING CURRENT AND FINALLY I GOT THIS ONE. REALLY SCOTT YOU ARE GREAT👍

@alvarogdb15 8 років тому

Being a Mechatronics student myself I find this video very useful. thank you!

@leonelgouveia7573 8 років тому

I discovered tour channel only 4 days ago, you're amazing, keep it up :)

@edwardhammock24 Рік тому

Great video covering some advanced content. This is how the main propulsion motors on warships are controlled.

@eddyfuchs1 8 років тому

Damn, i really learn much in this videos since #10 or so. I really notice that you started out pretty self-tought and now learn stuff at University, i like it

@agstechnicalsupport 6 років тому

Very good video illustrating the use of thyristors and triacs in phase angle control for light dimming applications.

@voltlog 8 років тому

You got a new oscope, nice one!

@greatscottlab 8 років тому

+VoltLog Thanks

@mouli570 6 років тому

But this one is 13000 USD. Holy Moly!

@jimadams2473 7 років тому

Nice instructional video!!! Very well sequenced. I learned a lot. Thanks

@thomasr1051 2 роки тому

In my 3rd year electrical class watching this instead of my teacher. Time well spent

@VoltageGuy2000 4 роки тому

My favorite channel on UKposts!

@jainvibhore1997 8 років тому

I was waiting for it for ages... Thank you!!

@semidemiurge 8 років тому

This video demonstrates a high level of thought (and effort) went into the pedagogy. Excellent, and your efforts are very much appreciated. Now I must increase my increase my Patreon support :-)

@greatscottlab 8 років тому

+semidemiurge Thanks for the support ;-)

@arv1ndgr 8 років тому

Well done! Keep such basics coming! 👌👍

@aursi63 8 років тому

Your oscilloscope is simply awsome

@dalenassar9152 5 років тому

Whenever I plug a component (like a TO-220) into a breadboard, I always use a pair of small needle-nosed pliers to bend the pins of the component 90 degrees first (on the pin axis), so that the component will slide nicely into the board (like a wire) without any damage to the component OR board--What do you think. Thanks for all the high-quality videos, too!!!

@arifahmed5035 7 років тому

your teaching is awesome You may be a great Engineer

@onjofilms 8 років тому

As a 30 yr tech, these are great refreshers.

@LeoDDJ 8 років тому

The whole time I heared ElectroBoom in my head saying: "FULL BRIDGE RECTIFIER!"

@sivaneshm9288 5 років тому

Well done Scott.

@user-so9hf3ji7h 8 років тому

Awesone,LOVE your Electronics basics!

@greatscottlab 8 років тому

+Miroslav Vučetić Thanks

@bikefarmtaiwan1800 4 роки тому

Interesting take on SCR control. What advantages would you say this rather involved method has over the original three or four component control circuit used most widely? You are a great teacher and lots of people are interested in this subject so I am curious why you did not also mention the simple way to control an SCR with a variable resistor, a fixed resistor , a capacitor and a diac ( The diac is optional) Thanks for a very interesting and informative channel.

@hayel2015 5 років тому

You are a great engineer. 💝💝💝

@Taran72 5 років тому

great explanation! thanks. A very helpful video!!

@omprakashtiwari9492 3 роки тому

sooo nicely explained thanks waiting next one

@CraigMansfield 8 років тому

I have no idea what you're talking about, but I admire your knowledge and I like your accent and videos. I'm trying to "tap" a 16v power socket on a turntable, so I can run an LED strip from it, but it seemed to destroy the electronics.... unless I destroyed them by trying to solder a power jack off the LED circuit board. I'm going to try one more time, then probably use a 12v battery. That's the level of my electronics :D

@craigrotay3732 8 років тому

Excellent tutorial!

@johannestjikele5827 Рік тому

Thank you for the lesson fast thinckers understand...

@deltaray3 8 років тому

THAT WOULD BE AWESOME!

@EmbeddedClub 2 роки тому

Great of GreatScott!

@bhargavarajeswaran1784 8 років тому

Thanks for making the video.

@mlikihazem 8 років тому

Wow very good explanation, it's useful for both experts and beginners. Good work and thank you for your efforts.

@greatscottlab 8 років тому

+Mliki Hazem Thanks mate ;-)

@eversr007 5 років тому

Wow this is a great video just like all the rest of yours. Awesome! A lot goes over my head. I'm trying to learn on my own, is there any books or places you could recommend. Im learning alot off of youtube but just wanted your opinion. This is very confusing stuff

@Crux161 8 років тому

I really love your videos :)

@jakelittle8098 8 років тому

Nice!!!! I have a printer I tore down for project parts (HP LaserJet 1012). It has a circuit straight off of the mains voltage (120v/60Hz) that consists of an inductor-HV film capacitor-Triac (BCR8PM) w/ Opticouple (3SD21)-feeding into a 24vDC/240vAC 10A Relay. The circuit feeds the heating elements of the "ink setting" system. I've been scribbling all over this PCB trying to figure out how this 'triac thing' works....Then, in a break from my frustrations...you read my mind, mid project, and I got schooled ;)

@aneeeessshhh 8 років тому

Good and informational video!!

@pablo_costas 8 років тому

nice vid ,its good to remember theese things

@georgievvladimir 8 років тому

Very good videos!

@jordanjohnson714 8 років тому

I started looking at this video, and noticed UKposts made me dislike the video. I never clicked the dislike button. Of course when I realized this, my mouse traveled at 99% light speed towards the like button, and the table broke from the force of the left click when the mouse was over the like button. I proudly saw the dislike counter go down 1 and the like counter go up 1. You make good videos!

@bigbread9000000 8 років тому

Love what you do, you just need to slow down a notch

@beatlespennylane19 8 років тому

Thank you very much for this video

@pikukala 7 років тому

nice video thanks for your efforts

@GSR600Relaxed 8 років тому

Awesome video..thanks!

@wrathofsocrus 8 років тому

I don't understand how there are 21 people that hate technology enough to give this a thumbs down, yet they used a computer long enough to make it here and give a thumbs down.

@Aperson-sv2hc 8 років тому

Ikr!

@thedankoona_5854 8 років тому

maybe they dont like the lession

@RsGOD-if9rs 8 років тому

+wrathofsocrus they just dont beleive in time travel. very sad indeed

@6kbps 8 років тому

It's actually 45 people

@debashisdas7557 8 років тому

+wrathofsocrus or This Can be a fact That thay consider Good as Bad and vice versa.....ooo wicked

@Shest00 6 років тому

Hello, your videos are great ! I was thinking about one project if u can demonstrate kr at least talk how to make-turning on a car with some kind of remote ? A real car. Thanks ! Keep publishing :)

@Mirandorl 6 років тому

Hey there Mr +GreatScott! Always love watching your videos. You seem to be having loads of fun :) Can I ask if you bought that variac from a spanish company called something like SATKIT or similar? Am thinking of picking up the 12amp / 3KVA version but was put off by the slightly lethal appearance. However you are not dead, so maybe it is not so bad :) Did you also use an isolation transformer? Should I get one to avoid being dead? They are very expensive :( Thanks for reading and keep on making awesome vids!

@leonamferreira8053 5 років тому

This is a really mind blowing video!! Thanks so much for sharing this valuable knowledge! Im using your idea into my final course work. By the way, one thing I would suggest is to change the map function on your code. The potentiometer is being mapped from 0 to 10,000 microseconds (which corresponds to 1 period of the 60 Hz signal), but Arduino nano is getting the zeros in 120 Hz, because you rectified the AC signal. Then, instead of mapping from 0 to 10,000 I would suggest you to do it from 0 to 8333. That helped me here :)

@leonamferreira8053 5 років тому

I've modified the code again. I mapped from 1000 to 8000. I've put 1000 because arduino needs to wait the 1ms pulse from the digital input 2 and decrease to 8000 to avoid crossing the next pulse.

@idjasurayt8486 5 років тому

Scott thats a wonderful video but i think u should use a snubber circuit RLC if we want to controll an inductive supply

@MYNICEEV 8 років тому

Awesome my very good friend.

@methuselahkhan2213 3 роки тому

Really helps to understand electronics. How would you make a home power conditioner to enhance protection for equipment ?

@willyansturari2217 5 років тому

Manja muito em 👏👏👏

@fuzzs8970 Рік тому

Hi Been watching your videos and must say you very very creative and knowledgeable. Thanks for sharing. Any chance you had a look at the new ch347?

@Enigman42 2 роки тому

Olayı aşmış o kadar profesyonel cihazları var ki ellerinde gece elemanları önüne bıraksan sabaha kadar proje devre hazır şekilde

@norlure 8 років тому

Hello Scott ! So the yellow wire goes to.......LOL............I love your video keep up the good work.

@zodiacfml 8 років тому

This is way a lot better than my college. :(

@armanhossain2491 6 років тому

bro you are great

@danielwalker5682 3 роки тому

Excellent!

@TheSirlop 8 років тому

Hi, first of all, congratulations your videos are awesome. Can you share the esquemathic of the speed control for a universal motor? Please

@raytest01 8 років тому

Learn a lot!! thanks :)

@jacob-gy8yj 8 років тому

Awesome Video! :)

@shantanumohile590 5 років тому

Hi sir, First of all thanks for all the awesome videos, always a fan of them. I am using arduino--> optocoupler-->triac--> bulb. I want to dim the bulb, i have tried changing the duty cycle but it keeps blinking and does not dim like an LED. Can you tell me why this happens? Thanks in advance !

@Mulazim. 3 роки тому

Gracias hermano😹

@vinaykumarkv5830 3 роки тому

Well done 👌👌

@deangreenhough3479 8 років тому

Great video. Can you please clarify the Ac unit you were using and A SAFE voltage to experiment with, is it max 50v Ac. Also what is the safest way to move from DC TO AC work. This could be a great help to those of us that only work on DC. Maybe this could be a future project. Thank you

@paulmeynell8866 5 років тому

A brilliant video, I have been trying to,fix a dimmer lamp. Could not find a good description of hoe it worked. Could you advise how you measured this with a scope, as I am not sure on ac where to connect the ground clip.

@manassehabraham5589 3 роки тому

Preparing for my SEM exams watching GreatScott 😂

@wiilliiamparker5216 8 років тому

sometimes i forget you are from germany, but underlining with a geodreieck reminds me that every time.

@NgocDangDinh 3 роки тому

Hi, thank for your great video, I would like to ask whether we can use phase angle control to regulate ouput voltage in a transformer less AC/DC converter?

@Messisan321 8 років тому

Scott, your videos are amazing. But could you put the aproxx cost of the things you build? would be really nice

@andrewwhite1793 7 років тому

Hi, thanks for the video. However, touching the output of an autotransformer is potentially FATAL. This is a video about BASIC electronics so will be watched by beginners. A lot of explanation is really necessary first.. This is NOT isolated from the mains. It assumes that the Neutral is always near earth potential and that every mains installation has the Live and Neutral the correct way around. I have used an autotransformer in an AC test set-up but used a isolating transformer on the mains side to keep me safe. Why not use a transformer from a old wall adapter? This is much safer and more readily available to the hobbyist?

@andrewwhite1793 7 років тому

Max, Your transformer is NOT isolated. That's what the "Auto" in the name is. Your good quality auto transformer has its circuit diagram shown on the front panel to remind you. Test it with a Ohm meter.. Your otherwise excellent video is likely to be on UKposts for many years to come. Please consider re-editing it before someone copies you, but gets a shock. You have responsibility to your viewers, not to mention liability.. I am not the only one to mention this in the comments. Don't assume that we are all novices out here

@oniruddhoalam2039 4 роки тому

GreatScott already talked about it in this video:m.ukposts.info/have/v-deo/rKKerLCMjYpjxnk.html. What he tried to say in this video is that there is a safe voltage between the outputs of the autotransformer.

@soufyandadoun5024 6 років тому

Hello Dear Professor, thank you for creating this chain Can you make a video on the arc-cos type digital commande for thyristors The best wishes for the future and thanks in advance ♥

@danielroibert5631 8 років тому

Hello, very interesting video. thank-you. i suppose that i fan put 220V to the T1 for drive 220V appliance ?

@SaliyaRuchiranga 8 років тому

Thank you !

@mayankanand1379 8 років тому

hey scott.... can u make a video on controlling 220volt AC fan speed controller using triac or thyristor and arduino...

@SirDella 3 роки тому

@@tripplefives1402 You can control the speed by lowering the torque just fine, ac fans do it that way, and I've seen fans that use dimmers to control the speed, creating a variable frequency sine wave would be overkill for just a fan

@venkateshe7506 8 років тому

good one. thanks

@amikhimji 8 років тому

Great video thanks

@Drxxx 5 років тому

Ami Khimji the best

@ashish6633 5 років тому

Really nice videos, keep up the good work. I have just one small question, by switching the triac what do we actually control. i.e. the AC voltage or the AC current. I mean to as if i monitor the AC Waveform across the load then will i get to see a clean sine wave?

@coolaj86 5 років тому

The Triac behaves like a full-bridge rectifier made from diodes. It is either fully on or fully off and does not limit voltage or current in the way that a Transistor (MOSFET) would. Instead, the current is controlled by waiting to activate the gate of the Triac until some number of milliseconds after the ac wave crosses the zero point. The full 60hz wave is 16.67ms wide, so each half is 8.33ms wide. He controls power delivery by adjusting the delay between 1 and 10ms before activating (closing) the Triac, which results in very crude waveforms which either begin partway into each half of the 60hz signal (1-8ms delay) or completely skips one half of the wave altogether, and a little into the next (10ms delay). As such using either a 4ms or 9ms delay is about the same in terms of getting half of the power, but using a 7ms delay would be far, far less. If you want a clean sine wave then you'd want to use a linear regulator (MOSFET) instead of a Triac. It would be less efficient for some uses and more efficient for others.

@marcushoutzager6225 5 років тому

Hi GreatScott! Do you happen to know any good circuits that use triacs or SSRs without overheat problems? Maybe with loads around 1200Ws?

@Vianney0686 8 років тому

Thanks for the video. Where do you use the zero declared in first line?

@thegreatleo2003 5 років тому

Please create video on controlling AC motors using Triacs!!!! Details on Snubber calculation would also be very appreciated!

@NourMuhammad 8 років тому

I see you have got new oscilloscope and also with touch screen :D congrats

@MohammedAyazQuadri 2 роки тому

Hey! Can you please mention the three Thyristors shown at 0:24? Are those good for general experimentation to learn about these components? An you also mention some general Triacs in those packages for the same purpose? I know TO-92 package doesnt make sense for such components but I am obsessed with it!

@TechInventorAman 8 років тому

hey great scott the video was great but the explanation was less and tough to understand i think there is a need to make part 2 of it ...consider thinking over my suggestion

@greatscottlab 8 років тому

+Tech Inventor Aman There will be no part 2

@VidarrKerr 5 років тому

@@greatscottlab Well, that sucks a lot.

@monelfunkawitz3966 4 роки тому

@@VidarrKerr Not really. What would the part 2 be? He pretty much covered all the basics to get you diving into it.

@VidarrKerr 4 роки тому

@@monelfunkawitz3966 Yeah, diving into other peoples' videos and writing. He could have made a part II for his fans/followers, so we don't have to go elsewhere. That's just good business.

@tylermcnee9441 8 років тому

Very informative and cool ciseo

@tylermcnee9441 8 років тому

Video

@speedsterh 8 років тому

Very interesting video for beginners like me (still, it's very dense and would need some further study to fully understand what you say). 17 people not liking your video ? Why the haters ?

@manikandan97 8 років тому

I like your idea's.....

@mahmoudkortas 8 років тому

Good Job :D

@nickhetzer2744 8 років тому

nice new scope

@John_Ridley 8 років тому

Hm, just learned a couple of new Arduino C functions (attachInterrupt and map). map would have been super useful in a project I just finished, I was doing the map math all myself. I suppose I should actually read the language and library reference at some point :)

@CodeCatProgramming 5 років тому

Will you please show how to demagnetize a magnet with TRIAC?

@LeoDDJ 8 років тому

I hope, I overlooked something, but: An Autotransformer is not an isolating transformer. One of the contacts is connected straight through, while the other gets transformed. Which means, if you connected live and neutral on the input side in reverse (or plugged the plug in the other way around) you would have 230V live mains on one end of the output cable (and 225 to 235V AC on the other (differential being only 10V of course)). But the 230V are still earth referenced, so current would still flow through you like touching a live wire!

@greatscottlab 8 років тому

+LeoDJ True. I always check the wires on the input beforehand.