Impedância RLC série
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The RLC Series Impedance Calculator is an online tool that helps determine the total impedance of a series RLC circuit. Impedance is a measure of the total opposition that a circuit presents to the flow of alternating current. It is calculated using the formula Z = √(R²+(X_L−X_C)²), where R is the resistance, X_L is the inductive reactance, and X_C is the capacitive reactance.
The formula works as follows: first, the difference between the inductive reactance (X_L) and the capacitive reactance (X_C) is calculated. Then, the resistance (R) is squared and added to the square of the previous difference. Finally, the square root of the result is taken, obtaining the total impedance (Z) of the circuit. This allows engineers and technicians to analyze and design series RLC circuits with precision.
Series RLC circuits are commonly found in filters, resonators, and other electronic devices. They are used in a wide range of applications, from communications to power systems. By using this calculator, it is possible to determine the total impedance of the circuit and thus ensure that the circuit is functioning correctly and according to the project specifications.
When working with series RLC circuits, it is essential to be careful with the unit of measurement of the involved quantities. Make sure that the resistance is in ohms (Ω), the reactances are in ohms (Ω), and the impedance is in ohms (Ω). Additionally, it is crucial to consider the frequency of the applied signal, as it affects the inductive and capacitive reactances, and consequently the total impedance of the circuit.
Frequently asked questions
What is impedance in a series RLC circuit?
Impedance in a series RLC circuit is the total opposition that the circuit presents to the flow of alternating current, taking into account resistance, inductive reactance, and capacitive reactance.
How does frequency affect the impedance of a series RLC circuit?
Frequency affects the inductive and capacitive reactances, which in turn affect the total impedance of the circuit. As frequency increases, inductive reactance increases and capacitive reactance decreases.
What are the units of measurement for resistance, reactance, and impedance?
The units of measurement for resistance, reactance, and impedance are ohms (Ω).
In what type of applications are series RLC circuits used?
Series RLC circuits are used in a wide range of applications, including filters, resonators, communication systems, and power systems.
How can I use this calculator to design a series RLC circuit?
Enter the values of resistance, inductive reactance, and capacitive reactance into the calculator and it will provide the total impedance of the circuit. Use this value to ensure that the circuit is functioning correctly and according to the project specifications.