Semiconductor Devices (part 5/6): Thyristors & TRIACs

  Рет қаралды 24,348

Donna Carroll

Donna Carroll

3 жыл бұрын

This video is part 5/6 of the week 4 series “Semiconductor Devices” and continues directly on from the week 3 series “Introduction to Semiconductors”.
These videos are part of a full Introduction to Electronics course (PHY2006) for students at the Maastricht Science Programme, Maastricht University. This course has a co-requisite of a practical course (PRA2006) in which theory is applied to circuit building and testing in the laboratory.
These videos are merely one part of the overall educational experience and are supplemented throughout the period with tutorials, exercises, activities, lecture slides, downloads of all important information and worksheets, as well as additional support from tutors and course coordinators.
By the end of this topic, you should be able to:
• Describe how PN junctions function in equilibrium, forward bias and reverse bias by sketching band diagrams.
• Sketch the IV characteristics of diodes, thyristors and TRIACs and describe how these change under different biasing conditions.
• Identify the function of transistors in various circuits configurations, applied either as switches or for amplification.
• Explain how thyristors and TRIACS can be used in circuits as switches and for phase control.
• Sketch and calculate the output voltages or gain of opamps in controlled-gain circuits, when given information about the input voltage and resistor values (or vice versa).
If you’re interested in a degree in Maastricht, check out our official webpages:
www.maastrichtuniversity.nl/s... www.maastrichtuniversity.nl/e...

Пікірлер: 58
@Savan_Triveda
@Savan_Triveda Ай бұрын
Wow, I fall in love with TRIACS. I never thought thats possible.
@CZYB-vg2xi
@CZYB-vg2xi Ай бұрын
This has saved me hours of searching for explanations. You make it easier to understand
@davidmonk7773
@davidmonk7773 9 ай бұрын
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 😊
@donna.carroll
@donna.carroll 9 ай бұрын
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!
@democracyforall
@democracyforall 4 ай бұрын
@@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???
@ELECTRONICS_LAB360
@ELECTRONICS_LAB360 Ай бұрын
Triac connection is totally wrong.!
@wlondoner
@wlondoner Жыл бұрын
Amazing explanation. You solved the mystery of thyristor and triac in less than 12min. Thank you soo much
@donna.carroll
@donna.carroll 11 ай бұрын
thanks for your kind feedback!
@ElectrifiedStud
@ElectrifiedStud 5 ай бұрын
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!
@CZYB-vg2xi
@CZYB-vg2xi Ай бұрын
What a teacher💯
@PAPYRSEH
@PAPYRSEH 10 ай бұрын
I subscribed, because you don't read what to say on your tablet, thank you for being a human and for your scientific work 🤝
@donna.carroll
@donna.carroll 10 ай бұрын
Thanks so much for your lovely feedback
@valentinaslau
@valentinaslau 10 ай бұрын
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.
@Damian-om7op
@Damian-om7op 10 ай бұрын
Yup, you're right.
@terrymaker4781
@terrymaker4781 9 ай бұрын
Excellent video! Clear and concise! I hope you continue your videos!
@donna.carroll
@donna.carroll 9 ай бұрын
thanks so much for the lovely feedback
@masakari6922
@masakari6922 9 ай бұрын
Damn i wish you were my professor back when i first started learning this stuff lol i would have had a better understanding
@donna.carroll
@donna.carroll 9 ай бұрын
thanks so much for your lovely feedback!
@CZYB-vg2xi
@CZYB-vg2xi Ай бұрын
100 percent
@alaahussin7815
@alaahussin7815 28 күн бұрын
Great!
@orveahava
@orveahava 9 ай бұрын
Great easy to understand video. Thanks.
@donna.carroll
@donna.carroll 9 ай бұрын
thanks for watching and taking the time to comment
@andersonpinesso2812
@andersonpinesso2812 10 ай бұрын
Thank you very much for this very clear explanation.
@donna.carroll
@donna.carroll 9 ай бұрын
thanks, glad it's helpful!
@igorzherebiatev5751
@igorzherebiatev5751 8 ай бұрын
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.
@erhman2004
@erhman2004 10 ай бұрын
This is what Bob Carver used in some of his audio amplifier power supply designs.
@natanaelalfaputra_te_0559
@natanaelalfaputra_te_0559 9 ай бұрын
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..
@archanatotekar671
@archanatotekar671 4 ай бұрын
Nicely explained! Thanks!
@ChandrashekarCN
@ChandrashekarCN 9 ай бұрын
💖💖💖💖
@towers2000
@towers2000 4 ай бұрын
It seens the circuit you draw from minute 8th onwards will be always turned on, regardless of the triac state.
@TheAnthroheart
@TheAnthroheart 3 ай бұрын
Awesomeness!
@msnextone1017
@msnextone1017 6 ай бұрын
Interesting situacion, scenario, id say..😅, very simple and straightforward explanation 💞, than you so much.
@user-mr3mf8lo7y
@user-mr3mf8lo7y 10 ай бұрын
Great explanation.
@donna.carroll
@donna.carroll 9 ай бұрын
thanks for watching and taking the time to comment!
@anjanasadaruvan5306
@anjanasadaruvan5306 10 ай бұрын
Tnks mis
@donna.carroll
@donna.carroll 9 ай бұрын
you're welcome! thanks for the nice comment
@jorgeluispereiradasilva5123
@jorgeluispereiradasilva5123 9 ай бұрын
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.
@jamescaperelliiii4620
@jamescaperelliiii4620 11 ай бұрын
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.
@donna.carroll
@donna.carroll 11 ай бұрын
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
@ishakboussalia1555
@ishakboussalia1555 4 ай бұрын
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?
@DonatoGreco
@DonatoGreco 5 ай бұрын
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
@steveman1982
@steveman1982 11 ай бұрын
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!
@DjeDrie
@DjeDrie 11 ай бұрын
have u fixed it because im having trouble with a dremel tool with on max speed ??
@donna.carroll
@donna.carroll 11 ай бұрын
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
@donna.carroll
@donna.carroll 11 ай бұрын
@@DjeDrie this could be the same fault - the variable resistor / potentiometer. Of course, sometimes the TRIACs themselves also fail
@louco2
@louco2 10 ай бұрын
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
@rideikarim9540
@rideikarim9540 9 ай бұрын
question, at kzfaq.info/get/bejne/Zq2Xitl5l9O9aGQ.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)
@anjanasadaruvan5306
@anjanasadaruvan5306 10 ай бұрын
Pilss 230v universal motor soft start tracs use circuit
@brucecorbettn9bh398
@brucecorbettn9bh398 Жыл бұрын
I remember doing this at Joliet Junior College in Joliet IL around 1971 using a gas filled tube. What is that tube called?
@donna.carroll
@donna.carroll Жыл бұрын
probably a thyratron, right? en.wikipedia.org/wiki/Thyratron#:~:text=A%20thyratron%20is%20a%20type,phenomenon%20known%20as%20Townsend%20discharge.
@donna.carroll
@donna.carroll Жыл бұрын
thanks for watching!
@lagossmartmeterhackathonte8928
@lagossmartmeterhackathonte8928 10 ай бұрын
Triode vacuum tube
@victimovtalent6036
@victimovtalent6036 10 ай бұрын
mam..using SCR and sawtooth wave form for drill to reduce rotation speed and not lost torque like as TRIAC does
@donna.carroll
@donna.carroll 9 ай бұрын
some motors use two separate windings to adjust rotation speed instead of a TRIAC, that could be a solution
@victimovtalent6036
@victimovtalent6036 9 ай бұрын
@@donna.carroll mam we talking about drill 😌
@DawoodKhan-fg2pb
@DawoodKhan-fg2pb 10 ай бұрын
hello
@donna.carroll
@donna.carroll 9 ай бұрын
and hello to you! 😀
Semiconductor Devices (part 6/6):  OPAMPs
15:12
Donna Carroll
Рет қаралды 4,1 М.
Switching AC with Triacs and Zero Crossing Triac Output Optocouplers
34:47
Robert's Smorgasbord
Рет қаралды 41 М.
Женская драка в Кызылорде
00:53
AIRAN
Рет қаралды 506 М.
Mom's Unique Approach to Teaching Kids Hygiene #shorts
00:16
Fabiosa Stories
Рет қаралды 35 МЛН
لقد سرقت حلوى القطن بشكل خفي لأصنع مصاصة🤫😎
00:33
Cool Tool SHORTS Arabic
Рет қаралды 20 МЛН
Thyristor Circuits | Controlled Rectifiers | Power Electronics
24:38
Ahmad Elkhateb
Рет қаралды 28 М.
DIODES! All Sorts of Them and How They Work (ElectroBOOM101-010)
13:40
ElectroBOOM
Рет қаралды 1,5 МЛН
eapbg #47 Introduction to TRIAC
26:14
eapbg
Рет қаралды 43 М.
#768 Basics: What is a Triac?
14:53
IMSAI Guy
Рет қаралды 13 М.
TRIAC AC Dimmer Circuit - How to dim AC Power for Motors and More
11:00
Semiconductor devices (part 1/6):  An introduction to PN junctions
14:47
What are Resistance Reactance Impedance
12:26
Prof MAD
Рет қаралды 1 МЛН
Cracking Enigma in 2021 - Computerphile
21:20
Computerphile
Рет қаралды 2,4 МЛН
The Big Misconception About Electricity
14:48
Veritasium
Рет қаралды 22 МЛН