Please please continue to make videos like this. you’ve explained this in a way that I've understood something that I couldn't before, i found this at school too, 1 teacher out of 15 would be able to unlock my brain, when it happens it feels fantastic 😊
thanks so much for your wonderful feedback, I'm so pleased you liked the explanation! I hope to start making more videos soon, thanks to motivating comments like yours!
@@donna.carrollThanks for such a wonderful lecture and video. Just wanted to ask you one more thing. If I have a relay which is in closed normally and the it opens when the extra pin i.e the third one is powered. In the normal closed position I can pass dc current through it but if I powered the third pin which opens it will it open it if it has dc current flowing through it already in the normally closed position???
You are doing a wonderful job at teaching. Keep up the good work and wish you get what you really deserve. Thanks for reteaching my partially lost knowledge that was learnt a long time back. Cheers!
The triac circuit shown around minute 10 essentially makes a short over the triac and thus renders it unusable. If the lower right line would be removed, then yes, it would work as intended.
to set the timing of the pulse, you can use zero crossing detector. That makes the pulse will tirgger, always on the same spot of sine wave, actually at zero point. Thanks a lot for the explanation miss..
Hi. Liked and subscribed. I had got a question about a possibility of using the triac without the db3 attached to the gate. After about a month of searching I finally found the answer. In your video. Thank you. You also explained how my old experimental device worked.
Thank You. Good Video I believe that it will be applicable in Electric Cars. I have just observed in the video 10:51 moment that a resistor is missing maybe between Gate and Cathode of triac to be connected to the diode . Could you make more videos like this? Very good explanation thank you again.
The triac circuit is technically not correct for the operation being described. Closing the switch is also completing the electrical path for the motor / load regardless of the triac state. That circuit as drawn is fraught with errors.
Yes indeed! In practice (in a real circuit) you wouldn't build it exactly like this for many reasons, but for this example, it's just to gain a basic understanding of how the device might function in theory. Thanks for watching and commenting, much appreciated
Nice and thorough explanation, but @8:00 I find an error in the schematic since the bottom right DIRECT connection of the switch with AC supply completely bypasses the Thyristor, it shouldn't exist and your analysis would be RIGHT
Someone might ask why is she not doing an example or whatever. Yo! Sometimes in class we get taught by example and just to follow a procedural calculation based approach without really understanding in a big picture way why the results are the way they are. For that, I would like to thank you for that!
question, at th-cam.com/video/0GgWvH2mY80/w-d-xo.html , how can i replace the variable resistor, with something, ( may be transistor,) so i can control the current from other source, let say micro controller (arduino which is has analog output)
Glad I could be of help! Sounds to me like your variable resistor might be shorted which means the capacitor doesn't take any time to charge, hence the full signal is going through the triac all of the time
If the capacitor where not there/open you would also have the full voltage in the gate regardless of how much resistance in the potentiometer?? Thank you for taking the time to do these videos by the way!! @@donna.carroll
Crystal clear explanation and drawings. Phenomenal teaching Donna!
Please please continue to make videos like this. you’ve explained this in a way that I've understood something that I couldn't before, i found this at school too, 1 teacher out of 15 would be able to unlock my brain, when it happens it feels fantastic 😊
thanks so much for your wonderful feedback, I'm so pleased you liked the explanation! I hope to start making more videos soon, thanks to motivating comments like yours!
@@donna.carrollThanks for such a wonderful lecture and video. Just wanted to ask you one more thing. If I have a relay which is in closed normally and the it opens when the extra pin i.e the third one is powered. In the normal closed position I can pass dc current through it but if I powered the third pin which opens it will it open it if it has dc current flowing through it already in the normally closed position???
Triac connection is totally wrong.!
Amazing explanation. You solved the mystery of thyristor and triac in less than 12min. Thank you soo much
thanks for your kind feedback!
This has saved me hours of searching for explanations. You make it easier to understand
You are doing a wonderful job at teaching. Keep up the good work and wish you get what you really deserve. Thanks for reteaching my partially lost knowledge that was learnt a long time back. Cheers!
What a teacher💯
Wow, I fall in love with TRIACS. I never thought thats possible.
Excellent video! Clear and concise! I hope you continue your videos!
thanks so much for the lovely feedback
Great explanation!
I subscribed, because you don't read what to say on your tablet, thank you for being a human and for your scientific work 🤝
Thanks so much for your lovely feedback
The triac circuit shown around minute 10 essentially makes a short over the triac and thus renders it unusable. If the lower right line would be removed, then yes, it would work as intended.
Yup, you're right.
Great easy to understand video. Thanks.
thanks for watching and taking the time to comment
Damn i wish you were my professor back when i first started learning this stuff lol i would have had a better understanding
thanks so much for your lovely feedback!
100 percent
Thank you very much for this very clear explanation.
thanks, glad it's helpful!
to set the timing of the pulse, you can use zero crossing detector. That makes the pulse will tirgger, always on the same spot of sine wave, actually at zero point. Thanks a lot for the explanation miss..
Hi. Liked and subscribed. I had got a question about a possibility of using the triac without the db3 attached to the gate. After about a month of searching I finally found the answer. In your video. Thank you. You also explained how my old experimental device worked.
Nicely explained! Thanks!
Great explanation.
thanks for watching and taking the time to comment!
люблю умных девочек . хороший канал. удачи.
This is what Bob Carver used in some of his audio amplifier power supply designs.
Very Good MADAM
Interesting situacion, scenario, id say..😅, very simple and straightforward explanation 💞, than you so much.
Thank You. Good Video I believe that it will be applicable in Electric Cars. I have just observed in the video 10:51 moment that
a resistor is missing maybe between Gate and Cathode of triac to be connected to the diode . Could you make more videos like this? Very good explanation thank you again.
Great!
Awesomeness!
It seens the circuit you draw from minute 8th onwards will be always turned on, regardless of the triac state.
Tnks mis
you're welcome! thanks for the nice comment
💖💖💖💖
The triac circuit is technically not correct for the operation being described. Closing the switch is also completing the electrical path for the motor / load regardless of the triac state. That circuit as drawn is fraught with errors.
Yes indeed! In practice (in a real circuit) you wouldn't build it exactly like this for many reasons, but for this example, it's just to gain a basic understanding of how the device might function in theory. Thanks for watching and commenting, much appreciated
Nice and thorough explanation, but @8:00 I find an error in the schematic since the bottom right DIRECT connection of the switch with AC supply completely bypasses the Thyristor, it shouldn't exist and your analysis would be RIGHT
Great explanation, also you are very attractive.
I remember doing this at Joliet Junior College in Joliet IL around 1971 using a gas filled tube. What is that tube called?
probably a thyratron, right? en.wikipedia.org/wiki/Thyratron#:~:text=A%20thyratron%20is%20a%20type,phenomenon%20known%20as%20Townsend%20discharge.
thanks for watching!
Triode vacuum tube
Someone might ask why is she not doing an example or whatever. Yo! Sometimes in class we get taught by example and just to follow a procedural calculation based approach without really understanding in a big picture way why the results are the way they are. For that, I would like to thank you for that!
I know that gate should be connected in A2 side not A1 . I am confusing here . The question is the gate on line side or the natural?
question, at th-cam.com/video/0GgWvH2mY80/w-d-xo.html , how can i replace the variable resistor, with something, ( may be transistor,) so i can control the current from other source, let say micro controller (arduino which is has analog output)
Now i understand the parts a bit better of the lamp I'm trying to fix. Only goes on full blast, with the variable resistor in any position.
Thanks!
have u fixed it because im having trouble with a dremel tool with on max speed ??
Glad I could be of help! Sounds to me like your variable resistor might be shorted which means the capacitor doesn't take any time to charge, hence the full signal is going through the triac all of the time
@@DjeDrie this could be the same fault - the variable resistor / potentiometer. Of course, sometimes the TRIACs themselves also fail
If the capacitor where not there/open you would also have the full voltage in the gate regardless of how much resistance in the potentiometer?? Thank you for taking the time to do these videos by the way!! @@donna.carroll
mam..using SCR and sawtooth wave form for drill to reduce rotation speed and not lost torque like as TRIAC does
some motors use two separate windings to adjust rotation speed instead of a TRIAC, that could be a solution
@@donna.carroll mam we talking about drill 😌
Pilss 230v universal motor soft start tracs use circuit
hello
and hello to you! 😀