I have an input signal which I want to switch from 12V-5V and a low pass filter directly after that, the issue is, if there wasn't a switch I can calculate the cut-off frequency easily.
In my case, since the input resistance will change depending on if I have the switch open or closed, is there an orientation I could use to make this work? Or will I have to just buffer the voltage divider output and use a third resistor to set the filter cut-off frequency
Edit: The switch must be a SPST switch as that's the one I have at hand.