Wayne Parham Messages: 18786 Registered: January 2001
Illuminati (33rd Degree)
There are several things that resistance in the circuit can be made to do. It can be used to provide attenuation and it can also be used to set the Q of the circuit. So the differences in values and configuration are what set those things. In some cases, all that is needed is a voltage divider, but in other cases the Q of the circuit is modified to tailor response.