Diodes - A Practical Guide
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- Опубликовано: 19 июн 2024
- From Avalanche to Zener, we have diodes for you today! Learn how diodes work and how to use them in your circuits. Laser Diodes included!
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Diodes have been around for a very long time. They were the first tube devices and the first semiconductors, and today, there are many different types of diodes for many applications.
We’ll look at several types of diodes today. We’ll see how they are used and perform a few experiments with them. Not only that, but we will also take out a few Laser diodes and play around with them.
Here is a list of the diodes we will be learning about:
Rectifier diodes
Switching Diodes
SCRs (Silicon Controller Rectifiers)
TRIACs
DIACs and SIDACs
Zener Diodes
Avalanche Diodes
Tunnel Diodes (Esaki Diodes)
Varactor Diodes (Varicap Diodes)
Schottky Diodes
PIN Diodes
Shockley Diodes
Photodiodes
LASCRs
Opto-TRIACs
LEDs
Laser Diodes
That's a lot of diodes, and each one is unique!
Here is the Table of Contents for today's video:
00:00 - Introduction
01:30 - Understanding Diodes
07:31 - Bridge Rectifier
08:50 - Bridge Rectifier Filter Experiment
11:58 - SCRs - TRIACs - DIACs
14:57 - SCR Latching Experiment
17:27 - Zener Diodes
19:05 - Zener "Voltmeter" Experiment
23:53 - Exotic Diodes
28:35 - Producing & Detecting Light with Diodes
33:27 - LASER Diode Experiments
38:11 - Conclusion
Hope you enjoy the video!
Bill 
Хобби
Very few people would make me interested in investing 40 minutes of my time on diodes. You are the best!!! Thank you!!!
I was surprised to find that I, too, watched the entire episode at normal speed, no less...
same, watched it twice and will watch again.... so many diodes.... :x
I had the video playing in the background while I was building a fire. But when I had the fire roaring nicely, I realized I had missed some details. Rewound the video and watched all of it again with my full attention.
As a retired engineer, these videos are great therapy.
if there is someone eligible for best electronic prize ,it must be you. The level of quality production is just unmatched. Kudos Drone Bot
Love your presentation style always high quality
It's hard to find a better electronics/robotics channel. This channel is fantastic.
I'm glad you talked about the Zener diodes. I was using one as over-undervoltage protection for a single-supply 5V op-amp connected to a piezo in case it was bumped and created a >40V spike and it stayed within the op-amp's max range. Before that, I had to replace the op-amp every few months because someone where I was working would repeatedly cause voltage spikes
My initial thought when I saw the title of this video, was that I already knew about diodes... But boy was I wrong. I learned a ton from this video. Thanks, Bill for such a thorough explanation including the historical back ground. As always, Bill's educational videos are of the highest quality, and interesting too!
Looking forward to episode of Lasers. Thanks a bunch.
Wow.
That is great in all meanings of the word "great"!
Diodes seem to be humble everyday components.
Your video shows otherwise. Thank you for the excellent lesson!
Thanks always nice to learn things anew. You have the neatness bench I've ever seen. Wish I could make mine look that good. Ah well I still play with the same tools. 😄
I know what you mean, my goal is to have a workshop like his!
Amazing, this afternoon I made my first linear power supply from an old 12v transformer (based on one of your earlier videos) and observed the low voltage after the bridge rectifier and then the higher voltage after the capacitor and thought ‘what the heck?’ Went to look it up,
and the computer goes bing, notification of this video explaining the whole thing. Great timing! Many thanks. Such a good teacher. Salut from France
Ive been helping people learn electronic theory for a decade and hope to be 1/10th the teacher you are. Excellent work sir. So very well presented with perfect visualizations, graphics, graphs, tables, etc.
Way back in my teens (40 years ago) SCRs were my favourite discrete component. They still are. I never really understood diacs and triacs, but that's part of a bigger comprehension problem I have with AC circuits. SCRs, though, I was able to understand at a basic operational level. Their latching behaviour never ceases to amaze me. Theyre like a fidget toy. I could easily play around with them all day, triggering them and then giggling at myself like a giddy 14 year old, over the ease with which I can be impressed. They're little lumps of wirebound glory. People tell me they work by semiconductor this and PN junction that, but I am pretty sure they're actually driven by invisible magic.
Brilliant video, thank you for your efforts.
Never knew there are some many exotic diodes, thanks!
Great presentation! The care and effort is evident in all your videos. Now I have a clue bout all my 74LS series outputs ...TTL chips.
So glad you enjoyed it, thank you!
Transmitting audio over a laser beam would be an interesting project - years ago I bought an electronic experiment kit with the necessary parts and got it to work.
very detailed explanation thanks
Great video. Thank you for sharing your knowledge.
Amazingly detailed video about diodes!
Thanks for discussing about diodes like SIDAC and Shockley diodes!
BTW, my favourite diodes are TVS Diodes (one of the avalanche diodes), DIAC and Triacs!
Another excellent lesson!!
An excellent video, very informative, thank you so much, cant wait for the laser video.
Love diodes. Another cool video .😊
Thank you! I was engrossed for the entire video. I'm subscribed!
thank's, you have answer a lot of my questions about diode
very good presentation i liked!!!
20:00 It makes a difference whether you use the old yellow-green LEDs, with 2.1 volts, or the new super green LEDs, which need 3V voltage.
25:00 Avalanche diodes and Zener diodes should be in the same category. Above 6 volts it is the avalanche effect, below 4 volts it is the Zener effect. Between 4 and 6 volts there are both effects in the diode.
28:20 Shockley diodes can be used as oscillators, for example in simple switching power supplies. I have an isolated DC DC converter circuit that uses this diode as an oscillators. The Shockley diode is charged via an RC element until it produces a short circuit. This discharges the capacitor. Then it charges again. These sharp pulses are then given to the transformer via a transistor. Feedback is generated via a rectifier diode and optocoupler. All without a special IC.
Thank you sir for your content, beautiful sight to our eyes :)
always interesting to experience the components again in a well explained video!!
your videos are very well explained, thank you!!
again outstanding thank you
Just yesterday I thought "I should learn more about diodes" and here we are!
so profitable. Thank you Sir.
Great man, great video as always...😊😊
Great crash course on diodes.
I have bought a few IR laser diodes and waiting for some awesome cool project ideas.
Maybe you'll have some cool ideas...
A good video on diodes and I look forward to see your video on lasers.
Thanks mate this was really good!
Thanks!
You're a great teacher.
Very valuable content as usual 😊. As a suggestion you could also throw in the MOSFET based ideal diode solution as complementary to classic components.
Thank you.
i spent a semester struggling to undersand diodes and this video hepled so much in under an hour
Need to tweak the treble and ditch the echo. Great documentary.
THANK YOU!
Thank a lot.
cant wait for the laser video! 👍
this was fun
Ujust blew my mind by putting the prods in the actual whole of the bread board. I always have a hard time keeping all the flimsy connections connected
i learnt more about diodes here than 4 years of mechatronics school
Very interesting. Would be great if you could demonstrate an AC switching circuit and if there are any issues switching on or off near peak voltage
thanks to all the ancient inventors, tinkerers et all without we couldnt even watch this video. a diode is a diode is a diode or a diode or a diode and a diode and or acts ilke a diode ... or not :) hail the diodes.
good introduction. it would be nice to demonstrate the recovery time with rectifiers over their frequency range and beyond until they fail ;-) .
It's it my RUclips not notifying me or has it been a hot minute since your last video? Either way nice to see you again.
The SCR demo part number starts with TYN, not TNY. Fortunately, Digikey's database engine was smart enough to second-guess me.
For fun, can you make some SR flip flops with the SRC.
Please make video on 8051 Microcontrollers
Of course,had enjoy,but there are some issues, very high speed rectifire diodes for PSU and places where transistor an MOSFET high frequency are used.schottky three pin diodes with common cathode and anode.optocoupler in which an infrared diode is used.SMD Lazer diodes are used in lamps and are used to equalize the light from the bubble,of course,for exhibition,street lighting and cars.Two Tyyristors or SCRs can be used instead where high amp Triacs aren't available.If the Chinese wanted zener diodes instead of resistors they wouldn't able to compete in the price of optical products.Thank you so much for share informations.
standard current usually called 'conventional current' in UK
It's called that here in the US too.
I figured the generic small-signal diode would be the most popular, like the 1N914 or 1N4148. I think I'll read the Wikipedia pages of each of the 'exotic diodes'. There are a couple I need to learn more about.
Not complaining, but was surprised that you didn't include the Opto-Coupler.
Do ordinary power diodes emit photons in a similar way to LEDs? If they do perhaps the wavelength is outside the visible spectrum and ,of course, the molded case would block any emission.
12:54 - SCR mostrly are used to control AC and not DC. Ypu can use it with DC if you need this cpecific feature like you aleady said - that it will conduct current until you disconnect wire or current will drop below specific value. SRC are widly used in temperature controllers. Yes,, yhe minimums voltage you can get from 220v will be 110V ( a half), thats why a double SCr (called Triacs) is been used to cut it down to almost 0.
I wish universities put this much effort into their work....
please do a workshop about freeRTOS
You're forgetting about solar cells. These are diodes that generate electricity from light.
Solar cells can emit infrared light when there is reverse current.
In general, BJ transistors are also diodes.
Back then I opened a 2N3055 transistor can and used it as a solar cell.
15:48 a very dumb question, in this circuit, why is there a voltage (and current) between G and A?
2:50 John Ambrose Fleming has a striking resemblance to Frederick Guthrie 1:50 😁
Second comment , love your videos
First comment! Yay 🎉
Can you bring back DB1?
🙏👍
Day 132 of asking what happened to DB1
What is DB1?
@@artursrikmanisWe don't talk about DB1.
@@BobHolowenko 😂😂😂😂😂
@@artursrikmanisYT deleted my original reply, but DB1 was 'DroneBot 1', which was a real robot being built in the workshop starting about 6 years ago. There were 15 episodes, the last of which was 4 years ago, but the project has never been finished.
Gunn?
Promo>SM
Who are you again 🤨🤨
It's it my RUclips not notifying me or has it been a hot minute since your last video? Either way nice to see you again.