How an Optocoupler Works and Example Circuit

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5 жыл бұрын

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Пікірлер: 93

@jonathanfairchild 3 жыл бұрын

Very good description! Just detailed enough to get to the important info, but not too much as to get into the weeds. Very rare that you see a tech video like this with the perfect balance! Well done!

@merdurman 5 жыл бұрын

Great video man! I've been wondering what those were for. Keep up the great work 💯

@xmenken1 4 жыл бұрын

Very clear explanation of optocoupler. Thank you!

@jeffsylvester7394 3 жыл бұрын

Simplicity in explaining .great stuff .Good job .

@jazbell7 5 жыл бұрын

Very good presentation. Just for reference, there is another type of optocoupler, the "Photovoltaic MOSFET Driver" like the Vishay VOM1271. These are expensive, special purpose drivers, but are very useful in building MOSFET H-bridges.

@derekoyancho2056 4 жыл бұрын

Thanks bro,i was really struggling with this stuff!

@lifetech1989 5 жыл бұрын

Nice tutorial. Thank you!!

@ajaipal1 4 жыл бұрын

Nice video and very well explained All the best for future videos

@nsummy Жыл бұрын

Very good video. Nice and slow and concise.

@stormbytes 3 жыл бұрын

Very well explained.Thank you

@shareitez9179 2 жыл бұрын

great video , direct and explicit . congratulations , big like and subscribed as well !

@squidben5780 Жыл бұрын

Excellent presentation and explanation !!! Simple

@Ammani-Yat 5 жыл бұрын

thank you, good information

@johnpaulminguito 5 жыл бұрын

I just want you to congratulate of having the talent of knowledge and teaching. Thank you.

@johnpaulminguito 5 жыл бұрын

It is sad that indians accent in English is mostly degraded, not knowing their talent in Science and Tech.

@moki2093 4 жыл бұрын

@@johnpaulminguito he's not Indian.

@johnpaulminguito 4 жыл бұрын

Ow sorry, asian?

@moki2093 4 жыл бұрын

@@johnpaulminguito I think he might be Mexican, based on his accent

@magiclay 3 жыл бұрын

this is the same as vactrol? the internal led can be regulated the bright? to control voltage?

@georgei2480 3 жыл бұрын

Excellent video.

@balakumaran6088 2 жыл бұрын

Great brother... Thanks a lot for bread board circuit explanation.

@eugenevoltage1654 3 жыл бұрын

Useful, thank you

@alibehrouz9833 5 жыл бұрын

that was great for today

@muhammadbilal2000 3 жыл бұрын

Hello, thanks for the simple but very informative video. I have a question that what if we don't have two power sources i.e. two grounds. Can we still use the optocoupler there or it does not make any sense then?

@RASTERCHANNEL 3 жыл бұрын

Thanks, awesome video very helpful Thank u sir more power God bless

@joeblow7374 3 жыл бұрын

Nice testing setup.

@shahzebhusainshaikh4767 3 жыл бұрын

Can we use opto coupler to make the switching in data line D+ of USB type A?

@iggyandscorch434 3 жыл бұрын

The saviour of humanity right here I tell ya

@lez7875 5 жыл бұрын

greetings everyone. very well explained. a question: using a potentiometer we have a linear control of the output voltage on pins 3 and 4 ??? very good. success.

@ahernandez2470 4 жыл бұрын

how do you know what resistor to put, i put 24v input with a 1.2k resistor and it burned the optocoupler ?

@YigalBZ 2 жыл бұрын

Thanks for the video. Since the input from the switch is noisy (bouncing), how would the output look like? would it show also bouncing? this could be problematic if connected to input of a controller, especially with interrupts.

@ronmoz5815 3 жыл бұрын

thank you sir for the information

@D_D-_ 4 жыл бұрын

what is the relationship between the input and the output of the optocoupler?

@Dubswitcher 5 жыл бұрын

Would it be possible to use two opticouplers as NOT gates on each other, and make an oscillator? If so, how well would it work?

@ludicscience 5 жыл бұрын

Good question, not sure will think about it

@WTF_BBQ 5 жыл бұрын

I learned electronics in the old school method where current is from negative to positive. Electrons do travel from the negative source to positive. It always confuses me when people refer to current as traveling from Positive to negative. I don't understand why they teaching people this way now.

@edwardduran7126 4 жыл бұрын

Nice

@Ezzell_ 4 жыл бұрын

Ben Franklin labled the polarity as possitive and negitive according to what he believed to be true at time which was + to - flow. It was not untill after all the standard schematic sumbols were created for the diodes and transistors did we know it was actually - to +. This was the conventional current flow. We know now that was wrong but to change the entire world to electron flow current teaching has been deemed unnessary.

@alatracajr.markanthonym.7704 Жыл бұрын

refer to history. that also confuses the heck of me.

@CarlosSanchez-nz7tv 9 ай бұрын

Same thing. Negative charges from - + or positive charges from + to -

@taranagnew436 2 жыл бұрын

why are the gnds separated, can't you connect them both to the same gnd?

@thechronics4380 3 жыл бұрын

amazing video

@Info-Tech- 3 жыл бұрын

Finally understand!!...

@vigneshkumarbe8258 2 жыл бұрын

Well explained

@9700784176 4 жыл бұрын

thank you man. this is a great tutorial.

@ravindrabhoi8944 3 жыл бұрын

can we use this to control 12V DC motor using arduino input signal ?

@jamesallen6007 3 жыл бұрын

Many thanks.

@jamesallen6007 3 жыл бұрын

Thank you.🇬🇧👍

@aleksandarmarkovic4913 5 жыл бұрын

thanks :)

@Inquire98 5 жыл бұрын

Good, very good 😎

@tamila2z6490 Жыл бұрын

Superb

@danhphamthanh197 3 жыл бұрын

Thanks sir.

@electroniquepassion 5 жыл бұрын

Nice 👍

@sahalasolusiindustri 3 жыл бұрын

Can i change 9 Vdc to 24 Vdc? as input came from sensor?

@shakerileiwat4341 5 жыл бұрын

Nice 👍👍👍

@sayyidsahal4533 4 жыл бұрын

So basically the input (voltage to led) and output load (led) is not isolated?? Then how it will work as a isolator ?🤔

@brody6634 Жыл бұрын

Can anyone explain what the numbers on top are? For example.. my octo reads as follows L 1550 817 B W .....I believe the important numbers are the 817B, because I have been able to find replacement octos with those numbers, but the top and bottom lines do no match... For example I found something like L 1440 817 B Y ... Would this work for me? Can anyone explain what each number means, I can't find any videos that discuss that

@reydsting1030 4 жыл бұрын

Nice sir

@ziadfawzi 5 жыл бұрын

Thanks.

@ravihc4626 3 жыл бұрын

Dear sir, I have a question. In PC817 (4 pin IC) there is no transistor base terminal pin, but in MCT2E (6 pin IC), there is a dedicated transistor pin. I wonder, what is the difference what is purpose of transistor base pin. Please give your view sir.

@Vpg001 10 ай бұрын

Question: Would I need an optocoupler for this breadboard circuit to work? What significance does it have for the circuit?

@waterfuel 8 ай бұрын

How does an optocoupler turn on with negative input volts? diode added in reverse To internal led? anode to anode?

@Trident_Euclid 4 жыл бұрын

How common this design in automotive industry? Compared to the conventional magnetic relays.

@eddiemolina657 2 жыл бұрын

Sir does PC123 optocoupler can be powered by a 9v Bat? Pls reply. Thank you🙂

@dibyendusamanta420 3 жыл бұрын

Bro, LDR (s817) ki out put pe kitne voltage & current de sakte hai?? (Jis taraf it led rahta hai uske opposite side pe )

@ravindrabhoi8944 3 жыл бұрын

2.7V to 3.3V and current in mA

@gitarmac Жыл бұрын

I don't understand why the black wire goes from the chip to the vcc on the other side. I made a circuit in which both power supplies are isolated, and the only thing bridging the gap is the chip. If I disconnect the power supply from the led side, pressing the button does nothing, as you would expect. The same vis versa. The led will not light even though that side has power. It will only light when the side of the chip with pins 1,2 and 3 have power. This is the second video (there are probably more) in which a wire, sometimes 2, connects each side which would seem to me to defeat the entire principle of the optocoupler. What am I missing? I wish I could post the pic of my breadboard circuit for critique.

@ashrafkarjiker6888 Жыл бұрын

How do you get the value of the 1k ohm resistor

@woutverjans2928 3 жыл бұрын

Wouldn't it be better to compare to a relais?

@kiranshashiny 4 жыл бұрын

Why cant the 9v GND and the 7v GND be tied to a common GND ? Would it make a difference ? Nice video and good explanation btw: Thanks.

@None_NoneType 2 жыл бұрын

Hey, you probably don’t need this anymore, but someone else might. The purpose of having the octocoupler is to have both circuits be electrically separated, so having a common ground can make issues there