One of the things that's always confused me about moving from general AC / DC analysis to actual functional circuits, like RC Filters is the seeming abandonment of series-parallel dynamics.
For instance, this simple voltage divider as a low pass filter. It was explained to me that higher frequencies will encounter lower impedance in the capacitor while lower frequencies will encounter a higher impedance - causing high frequencies to pass to ground easier, thereby directing lower frequences to Vout.
But, I have a hard time even getting out of the gate, because (if I'm looking at this right) the capacitor is in parallel with Vout, both of which are in series with Vin. In real life Vout is more downstream circuitry that will have an overall impedance felt in parallel with that cap. And in turn effect the overall resistance when added in series with R1. And all of that will entirely effect how this low pass filter works.
This is a problem for me because this kind of schematic, with dangling Vins and Vouts in various configurations with all kinds of electronic components, is used over and over again in subtending study. It's made it hard for me to understand more advanced material now that I've *just* made it out of DC/AC Analysis.
What is it I'm not *getting* here? No one else seems to have this problem, from what I can tell...
For instance, this simple voltage divider as a low pass filter. It was explained to me that higher frequencies will encounter lower impedance in the capacitor while lower frequencies will encounter a higher impedance - causing high frequencies to pass to ground easier, thereby directing lower frequences to Vout.
But, I have a hard time even getting out of the gate, because (if I'm looking at this right) the capacitor is in parallel with Vout, both of which are in series with Vin. In real life Vout is more downstream circuitry that will have an overall impedance felt in parallel with that cap. And in turn effect the overall resistance when added in series with R1. And all of that will entirely effect how this low pass filter works.
This is a problem for me because this kind of schematic, with dangling Vins and Vouts in various configurations with all kinds of electronic components, is used over and over again in subtending study. It's made it hard for me to understand more advanced material now that I've *just* made it out of DC/AC Analysis.
What is it I'm not *getting* here? No one else seems to have this problem, from what I can tell...