Silicon Control Rectifier SCR Basic AC Circuit

Silicon Control Rectifier SCR Basic AC Circuit

[@2OO_OK]

Concise, clear, understandable. Bonus points for no music. Thank you very much!

[@AllAmericanFiveRadio]

Thank you, and you are welcome.

[@mp5073014]

Thank you for the very thorough, basic explanation of how these work. I like how slowly you talk when explaining, it gives me time to soak up what you're saying.

[@gunnerjonah7183]

i dont mean to be so off topic but does anybody know of a tool to log back into an instagram account?
I was stupid lost my password. I appreciate any tricks you can offer me

[@morganmax3132]

@Gunner Jonah Instablaster =)

[@gunnerjonah7183]

@Morgan Max thanks for your reply. I got to the site thru google and I'm waiting for the hacking stuff now.
Looks like it's gonna take quite some time so I will reply here later with my results.

[@gunnerjonah7183]

@Morgan Max It worked and I actually got access to my account again. Im so happy!
Thanks so much you saved my account !

[@morganmax3132]

@Gunner Jonah Glad I could help :D

[@agstechnicalsupport]

I love this video. Demonstrates the function of an SCR as good as it can be !

[@AllAmericanFiveRadio]

Thank you, and your welcome.

[@fernandoloaiza5423]

Como pocos maestros, claro y conciso.

[@dustysgarage5732]

Great video, finally someone speaking English and even using an oscilloscope

[@AllAmericanFiveRadio]

Hope you found this video useful.
Thank you, and you welcome.

[@johnmcgiv1]

First class as normal A credit to the teaching profession clear and precise, many thanks Rick all the Best for the Festive and go Safe.

[@AllAmericanFiveRadio]

Thanks and your welcome.

[@TonyButchT]

Always a pleasure to watch and learn from you! Thank You!

[@AllAmericanFiveRadio]

Thanks Tony T.

[@Cosmos142857]

Thanks! Always look forward to your videos.

[@AllAmericanFiveRadio]

Thanks Cosmos142857

[@Thermionman]

.....very interesting....I am learning more all the time...........Thanks for these videos

[@Ronbob59]

Great video, Rick. Thanks for posting it...
Ron

[@AllAmericanFiveRadio]

Thanks Ron

[@vibra64]

Always an excellent presentation. Thank you for all your great videos.

[@AllAmericanFiveRadio]

Thanks vibra64

[@mixme8655]

very cool voice i understand it excellent presentation sir thank you

[@AllAmericanFiveRadio]

Thanks and your welcome.

[@xLipseDrei]

Thank you very much! You've nailed it :D

[@AntiqueRadioandTV]

Thanks again Rick for the wonderful demonstration SCRs and how they function. Well done!
Have a Merry Christmas and a Very Happy New Year to you and your family!
from;
Tom and his family

[@AllAmericanFiveRadio]

Thanks AntiqueRadioandTV
You-all have a Merry Christmas and a prosperous New Year.

[@andrewferg8737]

Thanks again for educating us!

[@AllAmericanFiveRadio]

Thanks. Your welcome.

[@clems6989]

Goid job, simple explanation....

[@AllAmericanFiveRadio]

THANKS!!

[@ver64]

Thanks,excellent explanation..

[@AllAmericanFiveRadio]

Thanks Ver64

[@BJcanal270]

Thanks for sharing your knowledge

[@AllAmericanFiveRadio]

Thank you, and your welcome.

[@TEAMPHHrollsUSD]

thanks for sharing this very informative video for many basic electrical students this is as good as gold.

[@mikesamaki5063]

just what i needed! thanks a lot

[@DiySpeaker-Vn]

các ban có thể tham khảo sản phẩm tại: www.sendo.vn/thyristor-2p4m-combo-2-chiec-9074646.html

[@gurtobe]

Great video!

[@MrPionero16]

Regards Friend, great job!.

[@AllAmericanFiveRadio]

Thanks Oscar Ochoa

[@mrsemifixit]

Nice video. Do you have one explaining a circuit where a potentiometer is used to control an ac driven device like a motor with the help of a triac?

[@AllAmericanFiveRadio]

That is a good idea.

[@SteveHacker]

Does an SCR therefore behave similarly to a triode vacuum tube, where, instead of a gate controlling the flow, there is a GRID controlling electron flow?

[@AllAmericanFiveRadio]

An SCR is ON/OFF device. The triode grid controls the electron flow to the plate. Here is a video that may help.
Triode Tube Amplification Visual Demo
ua-cam.com/video/4FkD0LRiu7A/v-deo.html

[@oswinem7891]

Perfect video sir 👌👍

[@AllAmericanFiveRadio]

Thanks and your welcome.

[@gurkancekic9057]

very cool and clear. thank you

[@dwtees]

Rick, Thanks. I agree another great video. My question is the same as Swarf Rat and maybe some others. The two scr's together looks like a triac. Is this how a triac works? I'll check your other video's. You may already have one on triacs.

[@AllAmericanFiveRadio]

Yes this is like a Triac, but with two Gates. Search for Duty Cycle, there is a Triac in the dimmer switch.

[@jayatissapeiris6781]

Thank you very much for this tutorial video.

[@AllAmericanFiveRadio]

Thanks

[@RadioTubesSound]

Hi, thanks for your videos.
Regards

[@tectalabyss]

Hi Rick. Another Fantastic Video. I was wondering if the current draw increased with both side connected ?. Thank you for sharing and Happy Holiday"s to you and yours.
Warm regards.
Bobby

[@AllAmericanFiveRadio]

Thanks Bobby Tectalabyss
Yes with both halves, the current is about double. I did a video on duty cycle, and there is a Tiac and that circuit.

[@kvmdop]

How efficient are they?? Can they be used as a more effective Voltage regulator for instance??

[@AllAmericanFiveRadio]

In the high 90 percentile efficient. Usually this configuration is used to vary the duty cycle.

[@kevinbrain917]

am i right in saying that this diagram is basically converting A/C in to D/C when both scr's are switched on thus using the full wave on the oscilloscope. great job once more.

[@AllAmericanFiveRadio]

Kevin Brain The circuit is controlling AC. One SCR
is controlling one half cycle of AC and the other SCR is controlling
the other half of the AC. Our another words one SCR is controlling
the positive cycle of AC and the other SCR is controlling the
negative cycle of AC. You might want to watch another video of mine
called “Duty Cycle, Light Dimmer Demo”

[@kevinbrain917]

i will be watching more of your video's and thanks for the info.

[@falcon02012]

you made equivalents to Triac ,excellent presentation, what pogroms are you using for simulation

[@AllAmericanFiveRadio]

I use Adobe's Freehand, Photoshop Elements 12, Premiere Elements 12

[@shadmehraria5473]

Thanks for your video,Please explain about connecting high current back to back disk thyristor(that need 300ma for gate triggering) to MCU.

[@AllAmericanFiveRadio]

Send me the circuit and I'll be glad to.

[@shadmehraria5473]

@@AllAmericanFiveRadio If I had the circuit,was not here to ask you sir!

[@richardocran658]

great job

[@AllAmericanFiveRadio]

Thank you Richard, and your welcome.

[@akhileshbelore8060]

Thank you again sir for your so fast response..
Sir I wanted to know where can i find different types of SCR IC's avaible so that through their datasheet i can know which i require..
i.e., i just want to know from u what r the different types of SCR IC's avaible i know how they work and stuff...thank u sir....

[@AllAmericanFiveRadio]

Akhilesh Belore
I found pages of SCR's on Mouser. Just click on NEXT for another page.
www.mouser.com/Semiconductors/Discrete-Semiconductors/Thyristors/SCRs/_/N-ax244

[@saynotogenocide1317]

Have you ever worked with the old Ford Lincoln Mercury Sequential turn signals?
After 1969 they started using SCR's in the sequencer box, I am having a hard time finding the wiring...
I think the "flasher"/Large Cap in turn signal circuit creates a switched DC, they use to trigger the SCR, do you have any experience with that use?
Just basic theory of triggering with switched DC would help...

[@AllAmericanFiveRadio]

Nop. Never worked on that circuit.

[@rusbelhernandez4834]

exelent video!

[@eltreboldemissuenoscloverd4660]

Cómo calculas el valor de las resistencias del gate

[@AllAmericanFiveRadio]

I am using a C228B2 as an example.
Download the datasheet pdf.
First thing is you have to know the voltage you have that is going to be used to drive the gate.
Looking at the data sheet I would use MAX 40 ma and MAX 2.5, must not exceed this.
MIN gate voltage to drive the gate is 0.2 volts.
Now use Ohms Law to calculate the ohms that well not exceed MAX but a little over MIN gate voltage.
datasheetspdf.com/pdf-file/1128942/Motorola/C228B/1

[@jeanpierredaviau7478]

Why not use them instead of triac for light dimmer?

[@AllAmericanFiveRadio]

You could.

[@ragupathiram9955]

Awesome thank you

[@AllAmericanFiveRadio]

Thanks and your welcome.

[@hhhh3551]

can i use those to vacuum tube radios §help؟

[@AllAmericanFiveRadio]

This is more of a switching device.

[@zynthos9]

hi powered latched switch?

[@zynthos9]

darren70215 I'm sorry, I'm afraid I don't understand your comment.
Do you think you could explain your meaning?

[@sulemanshakir7746]

great work

[@AllAmericanFiveRadio]

+Suleman Shakir Thanks

[@michaeld9682]

So a triac, right?

[@AllAmericanFiveRadio]

A TRIAC conduce is both directions. This SCR conduce in only one direction.

[@michaeld9682]

@@AllAmericanFiveRadio that is the similar to the setup at the end of the video. Right?

[@AllAmericanFiveRadio]

@@michaeld9682 YES

[@ChrisMcNeely]

than you

[@AllAmericanFiveRadio]

Thank you, and your welcome!

[@barn5923]

Thanks very much

[@AllAmericanFiveRadio]

Thanks Darryl Planck

[@1232sean]

Hello Dear Sir, I am having a difficult time understanding a DIY design for a CDI for my motorized bicycle. There is no trigger used with the magneto. Here is the diagram
motorbicycling.com/attachment.php?attachmentid=37422&d=1308870564
The circuit uses an SCR. I would love to know how the circuit works. Thanks for all of your excellent tutorials.
sean

[@AllAmericanFiveRadio]

I would need more in formation. This is just part of the circuit. Can you supply the manufacturer and part number of the CDI? And the motor manufacturer and part number? If I can get the manufacturer information from the manufacturer I'll try and make a video.

[@1232sean]

AllAmericanFiveRadio
The blue wire comes from the magneto. The black wire goes to ground. The green wire goes to the ignition coil and from the ignition coil to the spark plug. This is the entire circuit. All of this information comes from the thread at motorbicycling.com "Roll Your own CDI" Here is the link to the page
motorbicycling.com/showthread.php?t=28439
The meat is from page 3 to page 5.
poroldchap has a video on a similar ignition system called "home made cdi for outboard"

[@arthurmead5341]

I thought AC doesn't have positive and negative?

[@AllAmericanFiveRadio]

The output of this amplifier is AC. It's not as pretty as I would like because I'm using diodes as a load.
MOSFET Push Pull Amplifier Visual Demo
ua-cam.com/video/-6N7l1dnk6s/v-deo.html

[@arthurmead5341]

@@AllAmericanFiveRadio i mean at 1:14 you show the transformer secondary having a positive and negative like it is DC, i don't get that

[@AllAmericanFiveRadio]

@@arthurmead5341 Transformer Basic Parts & Function
ua-cam.com/video/q3YhbugYjJY/v-deo.html
Transformers, a few basics
ua-cam.com/video/UvHCQswnjEg/v-deo.html

[@visionofwellboyofficial]

Its OR gate

[@AllAmericanFiveRadio]

An OR gate does not require the opposed polarity to turn it off.

[@visionofwellboyofficial]

@@AllAmericanFiveRadio so its AND ?

[@AllAmericanFiveRadio]

@@visionofwellboyofficial An AND gate does not require the opposed polarity to turn it off either.

[@visionofwellboyofficial]

So those gates only apply to DC ? Yet im still confused

[@AllAmericanFiveRadio]

@@visionofwellboyofficial An SCR requires a pulse on the gate to turn it on. And revers polarity on the cathode and anode to turn it off. Gates, depending on the gate, is on with a signal and off when the signal is gone, or visa versa.

[@GiC7]

Thanks

[@AllAmericanFiveRadio]

Thank you, and your welcome.

[@ridg1000]

Dear
We are looking for instructor to conduct 3 days course about Silicon Controlled Rectifier (SCR)
Please advice

[@soulimanezaoui4700]

merci

[@AllAmericanFiveRadio]

Thank you, and your welcome.

[@akhileshbelore8060]

Sir can i know the IC no. of SCR used...

[@AllAmericanFiveRadio]

Akhilesh Belore
You can find this on eBay
10 pcs NEW ST TYN1225 SCR 25A 1200V TO-220 AK

[@akhileshbelore8060]

AllAmericanFiveRadio thank u very much ...

[@tommygibson9515]

cheers

[@arshan04l]

❤

[@AllAmericanFiveRadio]

Thank you, and your welcome.

[@stonent]

Silicon.

[@fidelcatsro6948]

🐱👍🏿

[@AllAmericanFiveRadio]

Thanks

[@gurtobe]

Great video!

[@truongchithanh7]

Thanks very much

[@AllAmericanFiveRadio]

Thanks Truong Chi Thanh