I'm trying to design a board to control an AC motor with PWM, forward and backward.
Since this is my first time designing an AC circuit, I thought I would get input from the community to make sure I'm not going to fry something.
DIRECTION net will switch the relay to control direction of the motor.
SPEED_PWM net will be from a 5v microcontroller, which is using an AND logic gate to combine with the
ON net to turn the triac on and off using the
AD_IO net will cause an interrupt in the microcontroller to control the pwm.
The board will also provide 12v out through J3 pin 7.
Is this a decent design? I've tried to keep the DC components on the left side of the board, and the AC components on the right. Is there a simpler design that doesn't rely on the microcontroller interrupt to trigger the triac at the correct times, while still allowing a PWM input?
Thanks for taking the time to help a beginner!
BOM for all parts listed: