I know that soft-start controls are needed to limit inrush current at startup of typically large induction motors.
Now, what happens if you want to implement soft-start for triac controlled heater?
Supposedly that at startup you would have to slowly ramp up your firing angle to the desired_setpoint firing angle. But what about the case, when you are at, let's say 60°, and your desired angle is 120°? Do you need soft-start again?
Also, I know that inrush current time depends on the load attached to the system. But when designing a soft-start for some application that uses 120V and 15A max, what ramp-up time do you guys recommend? I just would like to know a ball-park figure, so that I can have a starting point.
Thanks.
Now, what happens if you want to implement soft-start for triac controlled heater?
Supposedly that at startup you would have to slowly ramp up your firing angle to the desired_setpoint firing angle. But what about the case, when you are at, let's say 60°, and your desired angle is 120°? Do you need soft-start again?
Also, I know that inrush current time depends on the load attached to the system. But when designing a soft-start for some application that uses 120V and 15A max, what ramp-up time do you guys recommend? I just would like to know a ball-park figure, so that I can have a starting point.
Thanks.