General description The Adjustable 9-50V/40A/2000W DC Motor Controller is designed for efficient speed regulation of various DC brushed motors. This industrial-grade governor operates within a wide voltage range of 9-50V and is suitable for applications such as automotive motor speed control and conveyor belt regulation. Its compact design and high reliability make it an excellent choice for both commercial and industrial use. Technical specifications Working voltage: DC 9V-50V Control power: 0.01-2000W Maximum instantaneous current: 40A Long-term operating current: up to 20A Quiescent current: 0.025A PWM duty cycle: 5% to 100% PWM frequency: 12kHz Operating temperature: -20°C to 40°C PCB dimensions: Length 90mm, Width 51mm, Height 30mm (excluding potentiometer adjustment) Usage The DC governor is versatile and can be used for: Speed regulation of general-purpose DC brushed motors Automotive motor speed control (e.g., cooling fans, wipers, air conditioning fans) Production line conveyor belt speed regulation Pipelines exhaust fan speed control DC bulb dimming and heating temperature adjustment Other information When shipping, the potentiometer is removed and placed in the case to prevent damage. Ensure correct wiring by observing the positive and negative poles to avoid short circuits. Follow the instructions on the side of the connection terminals for proper wiring.