DC Speed Controls
The speed of a DC motor is controlled by these controls. They control the motor's customizable acceleration and deceleration speeds and protect it from electrical surges. PWM (pulse width modulation) devices manage speed by adjusting voltage pulses. The silicon controlled rectifier (SCR) converts AC electricity to DC and allows for variable speed control. In constant or diminishing torque applications such as conveyors, packaging equipment, and centrifuges, these speed controllers are employed with permanent magnet or shunt wound DC motors, as well as DC gear motors.