I would like to build a simple RC filter for a PWM input. I have used this tool: http://sim.okawa-denshi.jp/en/PWMtool.php
to get the math done :)
I have a 1000 hz pwm input, I can stand to a rather high settling time. I end with a 2k resistor and 100u capacitor.
With this params (2k 100u at 1000hz) I got 0.006 ripple 0.460s settling time that are fine for me, I think.
Now, back to question: Is there ny difference for capacitor type with a simple 1 resistor + 1 capacitor or i can use any type of capacitor? (there is no polarity inversion or anything, so I can use electrolytic as well)
Does the type of capacitor affect the RC filter at all? Is it the correct approach to try to have low resistor to have low impedance on the output and having a big capacitor instead of the opposite?