Electronic Basics #20: Thyristor, Triac Phase Angle Control
video description
With zero cross detection AC regulator I would like to control welding transformer, but I saw the scope that for example 50% switch the transformer alwys will get the maximum voltage at turning on.
It would be better to turn on at 0V and trn off at some point not vice versa.
Can you please help how could I do that?
Date: 2020-09-05
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Comments and reviews: 9
shantanu
Hi sir,
First of all thanks for all the awesome videos, always a fan of them.
I am using arduino--> optocoupler-->triac--> bulb.
I want to dim the bulb, i have tried changing the duty cycle but it keeps blinking and does not dim like an LED. Can you tell me why this happens?
Thanks in advance!
reply
Hi sir,
First of all thanks for all the awesome videos, always a fan of them.
I am using arduino--> optocoupler-->triac--> bulb.
I want to dim the bulb, i have tried changing the duty cycle but it keeps blinking and does not dim like an LED. Can you tell me why this happens?
Thanks in advance!
reply
ashish
Really nice videos, keep up the good work.
I have just one small question, by switching the triac what do we actually control. i. e. the AC voltage or the AC current.
I mean to as if i monitor the AC Waveform across the load then will i get to see a clean sine wave?
reply
Really nice videos, keep up the good work.
I have just one small question, by switching the triac what do we actually control. i. e. the AC voltage or the AC current.
I mean to as if i monitor the AC Waveform across the load then will i get to see a clean sine wave?
reply
eversr007
Wow this is a great video just like all the rest of yours. Awesome! A lot goes over my head. I'm trying to learn on my own, is there any books or places you could recommend. Im learning alot off of youtube but just wanted your opinion. This is very confusing stuff
reply
Wow this is a great video just like all the rest of yours. Awesome! A lot goes over my head. I'm trying to learn on my own, is there any books or places you could recommend. Im learning alot off of youtube but just wanted your opinion. This is very confusing stuff
reply
dale
. just wondering, when you are going to make a TO-220 type case-compatible three-pin package that is easy on breadboards--just get a pair of needle-nosed pliers and twist the pins 90 degrees and they slip into the breadboard EASIER than a 1/4 W resistor!
reply
. just wondering, when you are going to make a TO-220 type case-compatible three-pin package that is easy on breadboards--just get a pair of needle-nosed pliers and twist the pins 90 degrees and they slip into the breadboard EASIER than a 1/4 W resistor!
reply
harin
Hey I have a doubt. why not just directly feed the 9 V AC voltage to the option isolator? You'll still get a approx. square wave for the positive cycles and you can use the state change triggered external interrupt in your Arduino.
reply
Hey I have a doubt. why not just directly feed the 9 V AC voltage to the option isolator? You'll still get a approx. square wave for the positive cycles and you can use the state change triggered external interrupt in your Arduino.
reply
Anon
Do not like this at all. I'm a robotics engineer with some experience with electronics and it was stil way too fast for me. I can't imagine what happens if a real beginner watches this and doesnt even know what optocoupler does.
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Do not like this at all. I'm a robotics engineer with some experience with electronics and it was stil way too fast for me. I can't imagine what happens if a real beginner watches this and doesnt even know what optocoupler does.
reply
Dhiraj
Your given program is not working, as zero crossing is not synchronized with the generation of pulses. You defined zero at pin 2 but not used anywhere in main program. Can you provide me original used program and help me?
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Your given program is not working, as zero crossing is not synchronized with the generation of pulses. You defined zero at pin 2 but not used anywhere in main program. Can you provide me original used program and help me?
reply
whitefields5595
Can you do an example with trailing edge switching so you don't start with the large pulse of leading edge triggering. Intuitively it appears that this is kinder to the load
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Can you do an example with trailing edge switching so you don't start with the large pulse of leading edge triggering. Intuitively it appears that this is kinder to the load
reply
Muhammad
Im doing Electrical engineering, and It has only been an year, so I dont know whether its a good thing or a bad thing that I dont understand most of the things which you said.
reply
Im doing Electrical engineering, and It has only been an year, so I dont know whether its a good thing or a bad thing that I dont understand most of the things which you said.
reply
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