Pulse Width Modulation (PWM) offers an efficient way of controlling the average current in DC loads. In DC motors, PWMs can eliminate the need for gear boxes and can drive DC motors at low speeds with minimal loss of torque. Applications include DC motor speed control, LED and incandescent lamp dimming, and current control in hydroxyl or HHO generators. This economical and powerful unit controls 30Amps 12/24DC and runs at a modest 100Hz. The current control range is 0-100%.