Now there is a huge debate between brushed and brushless fans and whether or not your pro-touring car needs it. (note that the major difference between them is brushless fans have the capability to run variable speed but you pay a premium for those fans) in most street car // hotrod applications the need for brushless fans isn’t required, that’s where the brushed fans and the PWM controller come in.

With a PWM controller like ours at Creative Werks // CWI Performance, the controller allows you to control over fan speeds. This control allows you to be able to proactively cool the engine and under hood temps. In addition you can allow the motor to soft start and ramp up in speed, in comparison to hitting the fan with a a hard ON load. Dependent on the specific controller you choose you may be able to control multiple fans and have external override switches in place for A/C override or toggle switches.

So, what are the benefits of using a PWM controller with a brushed motor? Let’s take a closer look.

Greater control over speed and torque
One of the main advantages of using a PWM controller with a brushed motor is the ability to achieve greater control over the motor’s speed and torque. By adjusting the duty cycle of the PWM signal, you can precisely control the amount of power delivered to the motor. This can be especially useful in applications where precise speed control is necessary, such as preemptive cooling with fans, maintaining constant fuel pressure with multiple fuel pumps, and a skew of other applications.

Energy Efficiency
Another benefit of using a PWM controller with a brushed motor is energy efficiency. Because the PWM signal controls the average voltage delivered to the motor, you can reduce the voltage when less power is needed, resulting in less energy consumption. This can lead to significant energy savings over time in OEM applications, especially in applications where the motor runs for extended periods of time.

Reduced wear and tear
Using a PWM controller with a brushed motor can also help reduce wear and tear on the motor. When a motor is started with a standard on/off switch, it experiences a sudden surge of power that can cause excessive wear and tear on the motor’s components. By using our PWM controller the voltage is gradually ramped up, reducing stress on the motor and extending its lifespan.

Reduced heat generation
Finally, using a PWM controller with a brushed motor can help reduce heat generation. Because the voltage is switched on and off rapidly, the motor spends less time operating at full power, which can reduce heat generation and help keep the motor cool. This can be especially important in applications where the motor is located in a confined space or where heat buildup can be a safety hazard.