This speed controller has been specially developed for low-voltage electric motor. The main application areas are: infinitely variable speed control of DC power drills, model cars, windscreen wiper motors as well as for electrical tools. Due to the pulse duration control, which works with a frequency approx. 20 kHz, the power loss is kept minimal even at low speeds. Through the use of a special MOSFET transistor can be the output current of 0 to 10 A continuously with a potentiometer setting, whereby the electronics in case of a sudden blocking of the motor is protected. The setting range of the motor extends from the complete standstill up to maximum speed. With a further potentiometer, the device offers a possibility of load-independent speed stabilisation. This will speed and torque loss at higher loads are avoided and a uniform motor running even at low speeds. The device can also be used for an external control (external potentiometer or external voltage) can be configured.This te