Electronic Basics #32: Relays & Optocouplers
video description
Many years, i am in the field of automation.
Initially, i was using arduino with mechanical relays but always an error due to spike voltage even with flyback diode.
After that i started with TRAIC BTA41 which can sustain upto 40Amp.
My system is working fine
I also used this traic with stm32 works great.
In my opinion, Traic is much superior than mechanical relay.
A tutorial on this topic from your side will be highly appreciated.
Regards
Date: 2020-09-05
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Comments and reviews: 9
Luis
There are also solid state relays. I work at a factory were we make electromechanical relays, some a lot more complicated than those shown. A lot of them have the diode you put on parallel already inside the relay. Overall, relays are very interesting pieces of technology that combine topics from science of materials, electricity and magnetism, even thermodynamics!
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There are also solid state relays. I work at a factory were we make electromechanical relays, some a lot more complicated than those shown. A lot of them have the diode you put on parallel already inside the relay. Overall, relays are very interesting pieces of technology that combine topics from science of materials, electricity and magnetism, even thermodynamics!
reply
Shrey
Hello sir
I want to know if i can use a BTA41 triac with Moc 3021 optocoupler IC to control heavy loads such as Air conditioners, refrigerators, microwave ovens etc. or the appliances whose current ratings are more than 10Amps and power ratings are nearly 2KW and if this combination isn't the right one then please guide me
reply
Hello sir
I want to know if i can use a BTA41 triac with Moc 3021 optocoupler IC to control heavy loads such as Air conditioners, refrigerators, microwave ovens etc. or the appliances whose current ratings are more than 10Amps and power ratings are nearly 2KW and if this combination isn't the right one then please guide me
reply
Herman
The first 3 months when i was starting at electronics i didn't understand a word you say in your videos, now when i watch your videos again it all makes a lot more sence. Your videos are great for people who already know how those things work and need more detailed explanation to truly master the use of it
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The first 3 months when i was starting at electronics i didn't understand a word you say in your videos, now when i watch your videos again it all makes a lot more sence. Your videos are great for people who already know how those things work and need more detailed explanation to truly master the use of it
reply
Mitchell
Damn, I just want to make circuits just like I did in minecraft and on a switchboard during physics class. I can't find anything on how to do that and this seems quite difficult to understand for a beginner.
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Damn, I just want to make circuits just like I did in minecraft and on a switchboard during physics class. I can't find anything on how to do that and this seems quite difficult to understand for a beginner.
reply
Dr. K
Hello. I have a question. What to use to control big electric load with extremely high frequency that reach 90 KHz. Please I need to make this using an arduino. It is very important. Thank you so much
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Hello. I have a question. What to use to control big electric load with extremely high frequency that reach 90 KHz. Please I need to make this using an arduino. It is very important. Thank you so much
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Henry
Thanks for the video. Im making a composite video switch so I can run lots of computers on one composite to HDMI adapter for my little vintage computer museum im making and this was super helpful
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Thanks for the video. Im making a composite video switch so I can run lots of computers on one composite to HDMI adapter for my little vintage computer museum im making and this was super helpful
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ari
I have a problem with opto isolator in my circuit it is still respond to command but only give weak current output around 2ma. I connect the output to drive 12v relay. Why is like that?
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I have a problem with opto isolator in my circuit it is still respond to command but only give weak current output around 2ma. I connect the output to drive 12v relay. Why is like that?
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Malluvalasa
Is it possible to connect the diode series to the indicator such that in order to avoid high voltages at the tap key by stopping current in reverse direction?
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Is it possible to connect the diode series to the indicator such that in order to avoid high voltages at the tap key by stopping current in reverse direction?
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Vedant
I have a doubt. I am a beginner so please bare with me. Why do we need a second transistor to switch on the relay? Can we use the one inside the octocoupler?
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I have a doubt. I am a beginner so please bare with me. Why do we need a second transistor to switch on the relay? Can we use the one inside the octocoupler?
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