Timestamps: 0:00 Introduction 0:35 What is Optocoupler 1:35 What's inside the Optocoupler? How Optocoupler Works? 5:44 Optocoupler Applications 6:39 Optocoupler Specifications 11:50 Relay vs Optocoupler
Thanks for this video brother. It's very useful. And please upload some videos related to sensors and transducers. I hope that it would be also very useful.
Hey ,i wanted to ask if the pc817 has an npn or and pnp phototransistor inside, because i wanted to use it in my audio amplifier for galvanic isolation and you know the common ground problem ,i wanted to use p55nf06 MOSFET ,which is n-channel and wont exactly work with negetive audio signals...if u can help me out with the build it wld be very nice 🙂
The biggest and the most important difference between relays and opto-couplers is that relays are strictly digital while opto-couplers can send an analogue output depending on the intensity of the LED inside.
relays are strictly digital? You're joking right? I must have missed something here. Relays are strictly mechanical, operate at higher voltages and there is the possibility of magnetic field interference created by the coil on activation. Whereas with optocouplers, THEY are strictly digital in nature, not to mention they can actually transmit signals while isolating the signal and contacts from one circuit to the other, eliminating the need for mechanical activity. If you knew that I now understand your joke, but if you meant that seriously, you need to go back to class.
@@markusallport1276 I meant relay contacts work in a digital fashion, like 1 and 0, true and false. Whereas an optocoupler can be linearly controlled to create analog signals. I'm talking about the same property that BJT transistors possesses. They have the saturation, cut off, and they can also be put the midway. To me, digital is anything that can be turned on or off, without hanging in the middle position. Maybe I'm misusing the term. Like you mentioned, relays are strictly electro-mechanical as well. That's how they are operated but they still put out a digital signal. Anything that can create binary logic can be classified as a digital device.
I always understood relays as being more analog than digital to operate....but as far as output is concerned, yeah I can see the digital like property, in it's on or off state and no "in between" to function properly, just hi or low. Guess I'm so use to solid state components, like semiconductors (such as optocouplers), belonging only to digital realm (well, they can be used for analog purposes too) and....yeah I can also see the analog capability of the led to phototransistor relationship happening inside the opto...., as far as variation of current goes to vary the brightness of the inside emitting led for desired varying strength of output. Yeah thats all a new one to me. That honestly will take me some time to adjust to...because for now I still think that notion is still debatable.
@@roseelectronics4582 Yeah thanks. But not sure if relays are ideally applicable for digital applications as they tend to be slower in response than a semiconductor switch, such as an SCR or plain ol transistor and tend to use more power than the aforesaid components, not to mention that semis are a bit more robust, more solid, than wire wrapped electro mechanical devices, I mean for rapidly fast switching digital operating purposes. So yeah I don't know...gotta think more on what you asserted.
Hello sir, Iam 3rdyear ece students, From vergio for online industrial training,they are asking to select one for online training Artificial learning internship ,data science internship,machine learning internship, front end web development, backend web development,Embedded system, cyber security,IOT, robotics,IC engine internship, AutoCAD ,digital marketing, government (ML/AI)body program.. Sir I like hardware side of electronics and I don't know about coding sir ,I have only c lang knowledge. vetilo edi select cheskunte bavuntundiii . I meen which will be interesting more.
Every field is good in its own way but ultimately it depends on the individual interest. Since you are interested in hardware, embedded system will be more suitable.
In the data sheet, the maximum allowable forward current is mentioned. so depending on the series resistance and the forward voltage drop across diode you can decide the maximum allowable input voltage. also Vce ( max) is 80V. please refer the datasheet for more info.
@@ALLABOUTELECTRONICS OK sir. Thanks Pls I want to also know the value of Rs should I use when stepping 240volts down with zener diode. I appreciate your quick response sir
As per the given specification, at 7:16, the LED in the opt-coupler has typical forward voltage drop of 1.25V. And since we want 5 mA current, so accordingly, the value of the series resistor R is calculated. ( Here it is assumed that, the microcontroller pin is providing TTL/ 5V output)
I had to read the CC to understand ANYTHING this guy was saying. The horrible mumbling and terrible English narration was abominable, but thank goodness for Closed Captioning.
Timestamps:
0:00 Introduction
0:35 What is Optocoupler
1:35 What's inside the Optocoupler? How Optocoupler Works?
5:44 Optocoupler Applications
6:39 Optocoupler Specifications
11:50 Relay vs Optocoupler
Ook ni jk ko
Interesting device.
Thoroughly explained 👍🏻👌🏻
Superb.Thanks for sharing this valuable information.
That’s realy a benificial video.thanks for this video
V.Nice 👍👍👍👌👌👌
Good demonstration 👍
Awesome bro.. Keep it up
muy interesante info de trabajo del optoacoplador....
Just superb 👍👍❤️❤️
Thanks for this video brother. It's very useful. And please upload some videos related to sensors and transducers. I hope that it would be also very useful.
Yes, definitely
Good. Please demonstrate a simple SMPS 12V adapter which uses pc 817 optocoupler.
Nice explained
super explained....
Explained well
3:42 You don't show linear optocouplers which use a pair of photodiodes with an external amplifier for high linearity, such as the HCNR200.
@hello
Could you please explain the lowdrop out Regulator operation with p mosfet and n MOSFET
Good work
Hey ,i wanted to ask if the pc817 has an npn or and pnp phototransistor inside, because i wanted to use it in my audio amplifier for galvanic isolation and you know the common ground problem ,i wanted to use p55nf06 MOSFET ,which is n-channel and wont exactly work with negetive audio signals...if u can help me out with the build it wld be very nice 🙂
Could you make a video on MOSFET switching and MOSFET drivers
The video on MOSFET switch is already made.
Here is the link : ruclips.net/video/UJkHL-6mn8s/видео.html
Good
The biggest and the most important difference between relays and opto-couplers is that relays are strictly digital while opto-couplers can send an analogue output depending on the intensity of the LED inside.
relays are strictly digital? You're joking right? I must have missed something here. Relays are strictly mechanical, operate at higher voltages and there is the possibility of magnetic field interference created by the coil on activation. Whereas with optocouplers, THEY are strictly digital in nature, not to mention they can actually transmit signals while isolating the signal and contacts from one circuit to the other, eliminating the need for mechanical activity. If you knew that I now understand your joke, but if you meant that seriously, you need to go back to class.
@@markusallport1276 I meant relay contacts work in a digital fashion, like 1 and 0, true and false. Whereas an optocoupler can be linearly controlled to create analog signals. I'm talking about the same property that BJT transistors possesses. They have the saturation, cut off, and they can also be put the midway. To me, digital is anything that can be turned on or off, without hanging in the middle position. Maybe I'm misusing the term.
Like you mentioned, relays are strictly electro-mechanical as well. That's how they are operated but they still put out a digital signal. Anything that can create binary logic can be classified as a digital device.
I always understood relays as being more analog than digital to operate....but as far as output is concerned, yeah I can see the digital like property, in it's on or off state and no "in between" to function properly, just hi or low.
Guess I'm so use to solid state components, like semiconductors (such as optocouplers), belonging only to digital realm (well, they can be used for analog purposes too) and....yeah I can also see the analog capability of the led to phototransistor relationship happening inside the opto...., as far as variation of current goes to vary the brightness of the inside emitting led for desired varying strength of output.
Yeah thats all a new one to me. That honestly will take me some time to adjust to...because for now I still think that notion is still debatable.
@@SeptemberAdam your understanding of the terms digital and analog is way better than a lot out there...
@@roseelectronics4582
Yeah thanks. But not sure if relays are ideally applicable for digital applications as they tend to be slower in response than a semiconductor switch, such as an SCR or plain ol transistor and tend to use more power than the aforesaid components, not to mention that semis are a bit more robust, more solid, than wire wrapped electro mechanical devices, I mean for rapidly fast switching digital operating purposes.
So yeah I don't know...gotta think more on what you asserted.
Nice and informative video,
Could you please help me how to create this type of videos?
Nice vedio sirr
why is it (5-1.25) / 5mA .... I get the 5 - typical Vf ... but why 5mA?
It has been assumed that the 5 mA current is required through the LED of Optocoupler. This formula is used to calculate series resistance.
Can you make a video about interlocks?
Yes, if many of you want me to make a video on it, I will definitely make a video.
sir good day can i replace any model of optocoupler in a burned optocoupler
You need to check the compatibility. The pin numbers and the characteristics should match. If it matches, then you can replace it.
Hello sir,
Iam 3rdyear ece students,
From vergio for online industrial training,they are asking to select one for online training
Artificial learning internship ,data science internship,machine learning internship, front end web development, backend web development,Embedded system, cyber security,IOT,
robotics,IC engine internship,
AutoCAD ,digital marketing, government (ML/AI)body program..
Sir I like hardware side of electronics and I don't know about coding sir ,I have only c lang knowledge.
vetilo edi select cheskunte bavuntundiii .
I meen which will be interesting more.
Every field is good in its own way but ultimately it depends on the individual interest.
Since you are interested in hardware, embedded system will be more suitable.
@@ALLABOUTELECTRONICS
Thankyou sir👍🏻
Selected the same
What is the maximum input voltage of this ic pc817?
And also what is the maximum output of it?
In the data sheet, the maximum allowable forward current is mentioned. so depending on the series resistance and the forward voltage drop across diode you can decide the maximum allowable input voltage. also Vce ( max) is 80V. please refer the datasheet for more info.
@@ALLABOUTELECTRONICS OK sir. Thanks
Pls I want to also know the value of Rs should I use when stepping 240volts down with zener diode.
I appreciate your quick response sir
Pls reply
@@chibuzoeze4225 I didn’t get it. How exactly you want to use this IC. For controlling purpose..what voltage you are expecting to give at input ?
@@ALLABOUTELECTRONICS inverter feedback
Hello , sir can I get full ppt for download 💗💗
why and how is it (5-1.5)??
As per the given specification, at 7:16, the LED in the opt-coupler has typical forward voltage drop of 1.25V. And since we want 5 mA current, so accordingly, the value of the series resistor R is calculated. ( Here it is assumed that, the microcontroller pin is providing TTL/ 5V output)
There is no subtitles :cc
Soon it will be updated.
I had to read the CC to understand ANYTHING this guy was saying. The horrible mumbling and terrible English narration was abominable, but thank goodness for Closed Captioning.
👍👍👍
🙏💓🙏
I can't understand a damn thing you're saying