Impedance Calculator
Calculate complex impedance for circuits with resistors, capacitors, and inductors in series or parallel configurations
Component 1
Impedance Results
Component Breakdown
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Impedance Visualization
📚 Impedance Reference
Impedance Basics
Impedance (Z) is the complex resistance in AC circuits, combining real resistance (R) and imaginary reactance (X).
Formula: Z = R + jX
Component Impedances
- Resistor: Z = R
- Capacitor: Z = 1/(jωC) = -j/(ωC)
- Inductor: Z = jωL
Where ω = 2πf
Series Circuits
Total impedance is the sum of individual impedances:
Ztotal = Z1 + Z2 + ... + Zn
Parallel Circuits
Total impedance is the reciprocal of the sum of reciprocals:
1/Ztotal = 1/Z1 + 1/Z2 + ... + 1/Zn
🔌 Common Circuit Examples
RC Low-Pass Filter
Series resistor and capacitor
Cutoff frequency: fc = 1/(2πRC)
RL High-Pass Filter
Series resistor and inductor
Cutoff frequency: fc = R/(2πL)
LC Tank Circuit
Parallel inductor and capacitor
Resonant frequency: fr = 1/(2π√(LC))
RLC Series Circuit
Series resistor, inductor, capacitor
Resonant frequency: fr = 1/(2π√(LC))
Note: This calculator provides theoretical impedance values. Actual circuit behavior may vary due to factors like component tolerances, parasitic effects, and environmental conditions.