Feeling like AI based voice over software reading the book. This type of professors🤣

Hi, I have an electronic board to control an AC motor -2500 watts/220v. On the board are mounted two TRIAC - BTB24-600BW . The motor has a problem-runing on reverse only-no matter which button is pressed-FW or RW. I found that the resistor who is connected to the Gate terminal on TRIAC 1 is burned and I replaced with a new one 47 Ohm/1 w . Also I found a short cut between the Gate and Terminal 2 (the midle terminal) on the same TRIAC and replace it with new TRIAC--BTB24-600BW.After that I did a check by multimeter between all soldering points. Then the board was connected to the motor.Unfortunatly the motor not run-in any directions- clock wise or reverse ! Do You can to gave me any advice?

Hello Sir if load is fan, it is subjected non sinusoidal voltage Right?. It will cause harmonics Right? Pls clarify

Whay R1 3.3K is placed in this circuit?

Dear Sir, when we reduced the power delivered to the lamp, which parameter (voltage or current?) remain constant and which one is varying?

@mahothirrahmanriddho887

3 жыл бұрын

The circuit varies the voltage, and when the voltage is not constant, the current varies too.

I need class online

What is the difference if using a potentiometer instead of this circuit ? What will be the difference between both ??

@hero96559

Жыл бұрын

You can use pot but with using pot most of the power is dissepated in heat...

DIAC can only work in single direction . How it will pass the current when reverse biased ??

@Aniverse3

2 жыл бұрын

Nah diac can work in both directions (diac = diode using ac can also be called as bidirectional diode thyristor)

What is the purpose of the 3.3k ohm resistor?

@husienhazima464

3 жыл бұрын

Did you find the purpose of this resistor ?

@philippezhang

3 жыл бұрын

@@husienhazima464 R1 limits the gate current to a safe value when VR1 is at its minimum