Michael Eneros

Hi i'm setting up a speed controller for my fuel pump. I have a simple pwm DC controller, witch i can set %Dutycycle and switch freq. The problem is that the controller need 0-5v analog input. And as i understand the PWM outputs on the G4 (extreme)Â is '0-12v' pwm. This means that i need to convert the pwm output to a analog output and convert the voltage to 0-5v. I think the esiest way to accomplish this is to first convert the PWM to analog with a simple RC filter or lo pass filter. And to get the voltage in the correct range by using a voltage divider. To calculate the components for the RC filter I need to know the output frequency of the FP speed function. Thoughts about this solution is also welcome as my electronic skills aren't wery good.. Â Regards // Eneros