Hi guys
looking at the diagram and explanation on a capacitive HPF in the filters chapter, everything makes sense and is understood. A capacitor is placed in series with the load, so far so good (As in the below image):
However in every other source on the internet, there is always a resistor placed in parallel to the output (which I assume is the where the load will be), as in the following image:
My question is why do I need the resistor? the first diagram made more sense.
If for example the load will have much higher impedance, then the resistor will almost completely shunt the signal and if the load will have much lower impedance then it will completely shunt the resistor.
So why is the resistor there?
looking at the diagram and explanation on a capacitive HPF in the filters chapter, everything makes sense and is understood. A capacitor is placed in series with the load, so far so good (As in the below image):
However in every other source on the internet, there is always a resistor placed in parallel to the output (which I assume is the where the load will be), as in the following image:
My question is why do I need the resistor? the first diagram made more sense.
If for example the load will have much higher impedance, then the resistor will almost completely shunt the signal and if the load will have much lower impedance then it will completely shunt the resistor.
So why is the resistor there?