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.
I think a lot of us know like 95% of this information, but you get valuable points of view watching a sharp guy like this and it helps you better understand electronics, especially that many of us have applied science knowledge. But if someone asks you how something works, it's hard to explain. It's extremely valuable to have the knowledge presented like this channel has.
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!
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.
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
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.
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.
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
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. 😄
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!
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!
Very valuable content as usual 😊. As a suggestion you could also throw in the MOSFET based ideal diode solution as complementary to classic components.
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...
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.
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.
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.
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.
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.
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.
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.
I really like your channel - I want to do projects and I think your videos really make it seem within reach, but want to setup a dedicated desk for it so I don't have to setup and teardown every day. Besides that your videos are really great for relaxing, very peaceful vibe, except for one thing - the intro music doesnt fit, - its too spritely. Sounds like its pitched towards children. Maybe most people watching are 5-7 then ignore me, but I would change it to something that matches your voice, which is down-tempo.
@@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.
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.
I think a lot of us know like 95% of this information, but you get valuable points of view watching a sharp guy like this and it helps you better understand electronics, especially that many of us have applied science knowledge. But if someone asks you how something works, it's hard to explain. It's extremely valuable to have the knowledge presented like this channel has.
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.
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.
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.
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
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.
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.
Never knew there are some many exotic diodes, thanks!
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
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!
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!
i spent a semester struggling to undersand diodes and this video hepled so much in under an hour
Thank you! I was engrossed for the entire video. I'm subscribed!
Brilliant video, thank you for your efforts.
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!
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!
This is the best video of my life
always interesting to experience the components again in a well explained video!!
your videos are very well explained, thank you!!
Thank you sir for your content, beautiful sight to our eyes :)
Just yesterday I thought "I should learn more about diodes" and here we are!
An excellent video, very informative, thank you so much, cant wait for the laser video.
Very valuable content as usual 😊. As a suggestion you could also throw in the MOSFET based ideal diode solution as complementary to classic components.
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.
Another excellent lesson!!
Great video. Thank you for sharing your knowledge.
15:48 a very dumb question, in this circuit, why is there a voltage (and current) between G and A?
thank's, you have answer a lot of my questions about diode
You're a great teacher.
Great man, great video as always...😊😊
Love diodes. Another cool video .😊
Excellent video, thank you
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
so profitable. Thank you Sir.
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
very detailed explanation thanks
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.
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 good presentation i liked!!!
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.
again outstanding thank you
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.
good introduction. it would be nice to demonstrate the recovery time with rectifiers over their frequency range and beyond until they fail ;-) .
cant wait for the laser video! 👍
Thanks mate this was really good!
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.
6:54 How do we read such a scale?
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.
The SCR demo part number starts with TYN, not TNY. Fortunately, Digikey's database engine was smart enough to second-guess me.
Thanks!
Please make video on 8051 Microcontrollers
Not complaining, but was surprised that you didn't include the Opto-Coupler.
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.
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.
i learnt more about diodes here than 4 years of mechatronics school
standard current usually called 'conventional current' in UK
It's called that here in the US too.
Thank you.
Thank a lot.
For fun, can you make some SR flip flops with the SRC.
THANK YOU!
2:50 John Ambrose Fleming has a striking resemblance to Frederick Guthrie 1:50 😁
this was fun
I wish universities put this much effort into their work....
please do a workshop about freeRTOS
Can you bring back DB1?
I really like your channel - I want to do projects and I think your videos really make it seem within reach, but want to setup a dedicated desk for it so I don't have to setup and teardown every day. Besides that your videos are really great for relaxing, very peaceful vibe, except for one thing - the intro music doesnt fit, - its too spritely. Sounds like its pitched towards children. Maybe most people watching are 5-7 then ignore me, but I would change it to something that matches your voice, which is down-tempo.
First comment! Yay 🎉
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.
Second comment , love your videos
❤
🙏👍
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.