Hi,
Im trying to design a simple control On/Off for a light.
It is to be driven from a PIC controller, and the lamp switching rate is about 4Hz so too fast for a relay.
Im going to use a triac, i have looked at other posts arround here and found this circuit:
(I will be replacing the transformer with a lamp)
Could someone explain the circuit to me please?
Why use a 390R resistor - how was this calculated?
Is the MOC3041 absolutly required?
Does it matter which side (MT1 or MT2) is live (i think not because this is AC, right?)
Im trying to design a simple control On/Off for a light.
It is to be driven from a PIC controller, and the lamp switching rate is about 4Hz so too fast for a relay.
Im going to use a triac, i have looked at other posts arround here and found this circuit:
(I will be replacing the transformer with a lamp)
Could someone explain the circuit to me please?
Why use a 390R resistor - how was this calculated?
Is the MOC3041 absolutly required?
Does it matter which side (MT1 or MT2) is live (i think not because this is AC, right?)