This circuit filters out friquencies above 1Hz.
This is how to calculate your cut-off frequency;
f=1/2πRC ,R=Resistance ,C=Capacitance
(It s better to first assign a value to your resistor and then use the equation above to evaluate the needed capacitance)
If you would like to filter out frequencies below 1Hz
just swap the order which the resistor and the capasitor are connected in.
What I can t seem to understand completely is the 50% drop in voltage.
Can anyone help me?