Thanks for explaining this. I was troubleshooting a non functioning AC to DC variable speed motor control (for a pottery wheel) which had some circuitry that I wasn't familiar with. it had two S4020L thyristors in it, and I couldn't find any mention of them in the circuit simulators I usually work with. Your video helped me to understand how these are used to both rectify and regulate the speed of a motor. And as an added bonus, helped me to isolate the burned out components. (Burned out resistors on the gate channel.)
Great Video although it seems it has been awhile since you have posted, this video was very helpful. Watching your older videos to now you have really grown from a pupil to a teacher. I think you really have a knack for teaching. You should post more!
SCRs were used in forklifts for PWM series motor control for traction and lift hydraulics. Some operate at very high currents between 12 and 80 VDC. GE made a whole range of them for many decades. They were popular because high amperage transistors were cost prohibitive until fairly recently. Prior to SCR most used giant resistors with shorting solenoids for the "gears". Very bumpy. SCR made it feel more like a proper accelerator. It is clunky what needs to happen just to shut the main SCR down in the systems. Transistors are nice and neat lol.
Good explanation, you should probably plan your explanation so that you do not repeat the same concept in a different manner. This video is essentially 7-10 actual minutes. But still great video, hope you appreciate some constructive criticism. And this video only got 270 views, i hate this world.
Why cant you talk about it while youre on it already? You should site examples by showing numerical computaions instead of cloud explanations. I like the way The Organic Chemistry guy teaches.
You too same as all of youtube teachers, why don't you tell that what and how it happens when gate signal is applying and off the gate. All are reading only from the book but not one has said actually reason .! Its really bad
Quince brietny I really can't understand what you are trying to say but I explain literally down to the electrons if you watch all my semiconductor videos. There are multiple videos that go along with this. I explain why it works quite detailed. Watch my other videos if you want a deeper explanation as to why this device behaves how it does.
Quince brietny the SCR is a latching device. Once current starts flowing it will not stop until the current reaches 0 for a specific amount of time. I am sure I explained this in the video.
@@gnquince When you forward bias an SCR you still have one remaining PN junction as described in the video. Once the gate current is applied, that barrier is overcome and you essentially have a standard diode. Instead of having a PNPN region you now functionally have a standard PN set up as in a a standard diode. This does not change as the electrons have already been “injected” by the gate so it continues to conduct as a standard PN diode even after removing the gate signal.
The only one capable of explaining something about SCRs I've found by here. Good work!
Great Explanation!
I watched GreatScott's video and was scratching my head, you made it more clear.
Logged in just to comment how good this video is. Thank you very much. I liked how you first gave an overview of SCR before explaining it in detail.
well done Jacob, very intuitive and instructive video
Thanks for explaining this. I was troubleshooting a non functioning AC to DC variable speed motor control (for a pottery wheel) which had some circuitry that I wasn't familiar with. it had two S4020L thyristors in it, and I couldn't find any mention of them in the circuit simulators I usually work with. Your video helped me to understand how these are used to both rectify and regulate the speed of a motor. And as an added bonus, helped me to isolate the burned out components. (Burned out resistors on the gate channel.)
A very good introduction into thyristors and their use. Thank you !
Great Video although it seems it has been awhile since you have posted, this video was very helpful. Watching your older videos to now you have really grown from a pupil to a teacher. I think you really have a knack for teaching. You should post more!
Great job done by great person........
Great service for humanity
You're a natural teacher!!!
Really good video on SCRs. I'm away to watch your other videos now. Please keep up the good work!
Great explanation! You rock man! God bless you
very precisely and clearly explained, thanks!
Clear and straight to the points.... Thank you very much
man how have I not seen your videos before this was great
Very informative. Thanks!
excellent work. amazing explanation. thank you.
Solid explanation all the way. Great examples
Thanks! I appreciate your comment. Great comments always keep me motivated.
Nice video. Gave me some hope for my exam.
Very good and informative.
Wow, actually I'm learning more with your video than If I was watching other ones
sorry for my english!
If you know your English is not that good, then it's probably not that bad.
Man you are good. Excellent explanation.
Thank you so much for your help and advice
great video ! good simple explanation
SCRs were used in forklifts for PWM series motor control for traction and lift hydraulics. Some operate at very high currents between 12 and 80 VDC. GE made a whole range of them for many decades. They were popular because high amperage transistors were cost prohibitive until fairly recently. Prior to SCR most used giant resistors with shorting solenoids for the "gears". Very bumpy. SCR made it feel more like a proper accelerator. It is clunky what needs to happen just to shut the main SCR down in the systems. Transistors are nice and neat lol.
Great video and explanation!
So a potentiometer hooked to a thyrister gives you an PWM-esque effect for AC? Using a triac would complete the PWM for the full waveform.
Very good tutorial... thanks alot
excellent explanation! thank you!!! I needed that :)
Very good video
Thank you for the video!
I swear my electronics teacher fuckin sucks. THIS MAKES SENSE NOW
Hello
Good work I have to say... Can you please help me, How do you control the delay angle of Thyristor
Thanks for this! You rock Jacob
Thanks, that is awesome
Good work bro
How can I change de circuit that they are always on (8 steady on)?
Could you please do the videos on MOSFET, IGBT and BJT as well?
great Video!
thankyou master jacob
Please what's holding current
best scr vid
I've only seen them in portable spot welding power supplies.
used high voltage DC transmission lines as well except they are quite large
GREAT JOB!!! TKS
Good and use fullll
Understandable
That's really a great explanation! Thank you!
Good day Sir can I ask you something?
arent anode negative and cathode positive?
great!
Nice!
I was always told that current flow from cathode to anode 😳
Good explanation, you should probably plan your explanation so that you do not repeat the same concept in a different manner. This video is essentially 7-10 actual minutes. But still great video, hope you appreciate some constructive criticism. And this video only got 270 views, i hate this world.
Well that is actually simple
fking og... love youuu
Why cant you talk about it while youre on it already? You should site examples by showing numerical computaions instead of cloud explanations. I like the way The Organic Chemistry guy teaches.
This video would be clearer if you talked slower and said less. It's great information, but please stay on topic.
Silver chariot requiem lol
What the heck is up guyssss
You too same as all of youtube teachers, why don't you tell that what and how it happens when gate signal is applying and off the gate. All are reading only from the book but not one has said actually reason .! Its really bad
Quince brietny I really can't understand what you are trying to say but I explain literally down to the electrons if you watch all my semiconductor videos. There are multiple videos that go along with this. I explain why it works quite detailed. Watch my other videos if you want a deeper explanation as to why this device behaves how it does.
Jacob Dykstra, please say why scr is not turning off when the gate signal is removed.
Quince brietny the SCR is a latching device. Once current starts flowing it will not stop until the current reaches 0 for a specific amount of time. I am sure I explained this in the video.
Jacob Dykstra that means how the junction2 will work, forward or reverse???
@@gnquince When you forward bias an SCR you still have one remaining PN junction as described in the video. Once the gate current is applied, that barrier is overcome and you essentially have a standard diode. Instead of having a PNPN region you now functionally have a standard PN set up as in a a standard diode. This does not change as the electrons have already been “injected” by the gate so it continues to conduct as a standard PN diode even after removing the gate signal.
Nice video!Thanks a lot!
Thanks a lot man❤❤
Thanks!!
Thank you very much sir.
Much respect man❤
Helpful