 #1
 1
 0
I need help calculating the magnitude of the impedance for a RLC circuit shown below. See the attached schematic.
I found the impedance magnitude of a similar circuit here:
Impedance Formulas
...see the 4th circuit from the bottom (let's call its impedance Z_a).
Unfortunately, I do not know how to include the series resistance Rx into this formula.
The problem I am having is whether to use the formula:
Z = Rx + Z_a
...or
Z = (Rx^2 + ???)^0.5
Also, I am not sure whether the value of the Rx will alter the phase angle between current and voltage of this circuit?
I found the impedance magnitude of a similar circuit here:
Impedance Formulas
...see the 4th circuit from the bottom (let's call its impedance Z_a).
Unfortunately, I do not know how to include the series resistance Rx into this formula.
The problem I am having is whether to use the formula:
Z = Rx + Z_a
...or
Z = (Rx^2 + ???)^0.5
Also, I am not sure whether the value of the Rx will alter the phase angle between current and voltage of this circuit?
Attachments

1.1 KB Views: 407