Electronic Basics #32: Relays & Optocouplers

In this episode of Electronic Basics I will show you how a Relay and Optocoupler works and when it makes sense to use them. Along the way you will see a couple of practical examples and find out how to control these two components properly.

Music:
2011 Lookalike by Bartlebeats
Ecstatic Wave, Jens Kiilstofte

[wiredelectrosphere]

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

[uilsoum]

i can always "relay" on you, GreatScott

[sanityd]

That was great, what I would really appreciate is for someone to make a video going through 4-8 relays, where they have the relay in hand and then they show the exact same thing on digikey/mouser and go to the schematic, run down all the items in the absolute max/ normal operating data for the first one, and then just explain the differences and what they are all typically used for (ie Vswitch and Vload + in what application) and what you could safely get away with.

[JonathanDeWitt]

This was a wonderful video! I loved how you very simply explained the pros and cons of using Relays vs MOSFETs vs Triacs for switching loads. That was the best explanation I've seen so far. Thank you very much for creating and sharing this quality content.

[lmsilvah]

Thank you for the ethics and professionalism with which you make your videos. I enjoy each of them

[wimwiddershins]

Thank you for the information.
I'm just starting to mess around with microcontroller switching big loads so this guide helps put all the pieces together. :)

[rabidtommy]

That is the neatest left handed writing I have ever seen.

[samreynolds]

Hi, Just Wanted To Say I LOVE Your Videos!

[toasawamura]

I really appreciate your consistency of writing with the same pen

[steven_jahn]

Hey Scott. A couple suggestions. I find it difficult to follow the diagrams when you're changing angles all the time. If this is to get out of the way of your hand, consider taking photos for the video after you've written the item down. It's also difficult to follow when the diagram isn't facing straight ahead. I realize you're trying to make it exciting, but there has to be some respect to what works and familiarity works. When we see the same diagram in the same position, it is easier to follow the message. If the position and angle change, we have to rescan the entire diagram just to see where you're adding this new information too.

A second suggestion, buy a new highlighter. ;)

[fullzys]

I always stay up until like 2am on Mondays so I can watch your videos. Keep them up! The quality is amazing

[bgable]

OMG, this is "Basics"? I'm going to have to watch this one again ... Great scott"s", excellent clear explanation. I appreciate you video's !!!

[nathanas]

Thorough analysis! Really appreciate these videos!

[surendrasinghdhanjal]

Your way of explaining and writing is amazing.

[Zolive]

I am the only one to like every end of video when he says : "Sssstay creative, and I will see you next time" ? <3

[AungWinHtutGH]

Wow, Great Presentation! I love your presentation style. Your drawing and handwriting are clear neat and smart indeed! Thank you so much for your lessons. By the way, the voice is yours or artificial?

[well]

I love your videos, Always keeping me interested in Electronics

[colinvos]

That moment when you learn more from a 8 minute long video that a 50 minutes long school lesson.
This makes me wanna create a school where the lessons are based on YouTube videos from people like Great Scott, PracticalEngineering, Tom Scott

[nikenbole]

I am very grateful of your videos.taught me allot

[bernardthankachen]

Can you consider a diy or buy episode on RC radios???
Thank you for teaching me electronics