Calculator Form
Example Data Table
| Use Case | Inductance | Capacitance | Resonant Frequency |
|---|---|---|---|
| Audio crossover | 470 µH | 4.7 µF | 3.386275 kHz |
| RF tuning stage | 10 µH | 100 pF | 5.032921 MHz |
| Filter prototype | 220 µH | 47 nF | 49.494833 kHz |
| Sensor interface | 1 mH | 10 nF | 50.329212 kHz |
| Power test rig | 47 µH | 220 nF | 49.494833 kHz |
Formula Used
This calculator assumes ideal components. Real coils and capacitors have losses, tolerances, and parasitic values. Those factors shift the practical resonant point.
How to Use This Calculator
- Choose the calculation mode.
- Enter the known values and units.
- Set the chart sweep range around resonance.
- Pick the number of chart points.
- Click Calculate Now.
- Review the result summary above the form.
- Use the graph to compare XL and XC behavior.
- Download the output as CSV or PDF when needed.
Frequently Asked Questions
1. What does LC resonance mean?
LC resonance happens when inductive and capacitive reactance become equal. Energy moves between the inductor and capacitor, producing a natural frequency for the circuit.
2. Why does the graph show two curves?
The graph plots XL and XC across a frequency sweep. Their crossing point marks the resonant frequency. That view helps you see how quickly the circuit moves away from balance.
3. Can I use microhenry and picofarad values?
Yes. The calculator supports H, mH, µH, nH and F, mF, µF, nF, pF. It converts them internally before calculation.
4. Does this work for series and parallel LC circuits?
The ideal resonant frequency formula is the same for both. Real response shape, impedance, and losses differ between series and parallel designs.
5. Why might practical measurements differ?
Real parts include resistance, leakage, tolerance, temperature drift, and parasitic elements. Those effects move the actual resonance away from the ideal result.
6. Can this help with product sourcing decisions?
Yes. You can compare target frequencies against available stock values. That helps with bundle selection, prototyping choices, and listing accuracy.
7. What if I know the target frequency only?
Use the inductance or capacitance mode. Enter the known component and target frequency, then the calculator finds the missing value.
8. What export data is included?
The CSV includes summary results and chart data. The PDF includes the key calculation summary for quick sharing or recordkeeping.