Hello, I need to know if I have to consider power factor requirement while operating a heater directly from AC. someone suggested me that, if i am powering a heater using a on/off mechanism based on a PID loop where I control duty cycle out of 1 sec on a 50Hz AC line, i need to have a zero crossing detector to detect the start of cycle or it will affect the power factor. I am not sure of that. Can anybody help me on this?
