The current limit circuit (see diagram) compares this voltage to an adjustable negative voltage using an op-amp wired as a comparator – unlike many op-amps, LM324 op-amps can be used as comparators ...

This pwm motor controller is using the fact that the small dc motor has the revolution speed depending on the power supply voltage. In this circuit the discharge time can be adjusted between 0.2ms and ...

You need not approach the age-old ac-motor-control design problem in the same old way. Making changes in the motor-sensing interface can increase efficiency, save board space, and lower costs. The ...

Integrate the motor to a machine, based on analysis of motor equations for voltage, current, torque and speed. Implement the motor and accompanying rotary sensor into a motor control circuit in both ...