What is the point of the B+ connection? Answered
What is the B+ connection for, if the solenoid is doing the actual current switching, and the controller switches the solenoid? Is that to charge the capacitors in the controller? Also, how is the motor speed actually controlled? Is that via PWM on the solenoid? If so, does that mean the solenoid is mechanically moving a lot? What's the life on something like that? Is it noisy? Sorry for all the questions.