Engine Cooling Fan Controller – Option 1

These PWM controllers can be used to trigger actuators such as DC motors, pumps, etc. with up to 900W. The output current for the fan motor is controlled dependent on the set point. One of the benefits of the regulation of power is the defined load of the electrical system. When triggering the fan motor the power is in proportion to the required air current and the turning moment (I~M). The main application is in the engine cooling ventilation motor area.

At 18kHz, the output frequency is higher than the audible range.
The current, due to the motor inductance, is nearly a direct current, and therefore does not produce any torque fluctuations.

The patented slope edge regulation generates only a very slight electromagnetic transmission.

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