Inductor Calculators
A comprehensive suite of calculators for inductor calculations, helping you with everything from basic core design to complex magnetic circuit analysis.
Air Core Inductor
Calculate inductance, Q factor and self-resonant frequency for air core inductors using Wheeler's formula and other empirical methods.
Iron Core Inductor
Design and analyze iron core inductors with considerations for core material properties, permeability, and magnetic circuit analysis.
Series Inductors
Calculate total inductance, voltage distribution, and phase relationships for series-connected inductors in complex circuits.
Mutual Inductance
Analyze coupled inductors including mutual inductance coefficient, energy transfer, and transformer applications.
Q Factor
Calculate quality factor, bandwidth, and power factor for inductors at different frequencies, including core loss effects.
Resonant Frequency
Determine resonant frequency, impedance characteristics, and bandwidth for LC circuits in various configurations.
Choke Design
Design RF and power chokes with optimized inductance, current rating, and frequency response for filtering applications.
SMD Code Calculator
Convert surface mount inductor codes to inductance values, including temperature coefficients and tolerance specifications.
Quick Reference
Inductive Reactance
f = frequency in Hz
L = inductance in Henries
Series Connection
Mutual Inductance
k = coupling coefficient
Quality Factor
R = series resistance
Calculator Features
Core Design Calculators
Air Core Calculator Features
Calculate key parameters:
- Wheeler's formula for single layer coils
- Multi-layer solenoid inductance
- Self-resonant frequency estimation
- Q factor prediction at frequency
Iron Core Calculator Features
Design calculations include:
- Core size and material selection
- Number of turns calculation
- Air gap optimization
- Saturation check
Circuit Analysis Tools
Series Calculator Functions
Analyze series connections:
- Total inductance calculation
- Voltage distribution analysis
- Phase relationship computation
- Equivalent impedance at frequency
Mutual Inductance Analysis
Calculate coupling parameters:
- Mutual inductance coefficient
- Coupling factor determination
- Energy transfer efficiency
- Leakage inductance estimation
Performance Calculators
Q Factor Calculator
Performance metrics:
- Q factor vs. frequency
- Bandwidth calculation
- Loss resistance analysis
- Core loss estimation
Resonance Calculator
LC circuit analysis:
- Resonant frequency finding
- Impedance at resonance
- Bandwidth determination
- Component value selection
Application Tools
Choke Design Calculator
Design parameters:
- Required inductance calculation
- Current rating determination
- Core size optimization
- Frequency response analysis
SMD Code Calculator
Code conversion features:
- Standard marking interpretation
- Value and tolerance extraction
- Temperature coefficient lookup
- Package size reference
Calculator Usage Guidelines
Input Parameters
Required information for accurate calculations:
- Physical dimensions and specifications
- Operating frequency range
- Current and voltage requirements
- Environmental conditions
- Core material specifications
- Application-specific constraints
Results Interpretation
Understanding calculator outputs:
- Inductance value verification
- Performance parameters analysis
- Design constraints validation
- Safety margin confirmation
- Optimization suggestions
- Application suitability check
Design Resources
Design Tips
Essential guidelines for inductor design:
- Always consider the complete operating range
- Account for worst-case conditions
- Include appropriate safety margins
- Consider EMC/EMI requirements
- Plan for thermal management
- Document design decisions
Common Mistakes
Issues to avoid in inductor design:
- Insufficient saturation margin
- Overlooking temperature effects
- Inadequate thermal management
- Poor mechanical design
- Ignoring EMI considerations
- Incomplete documentation