1. What is a Ferrite Core Model Calculator?

Definition: This calculator determines the inductance of a ferrite core inductor based on the AL value and number of turns.

Purpose: It helps electronics engineers and hobbyists design inductors for power supplies, RF circuits, and other electronic applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( L \) — Inductance (henrys)
• \( A_L \) — Inductance factor (henrys per turn squared)
• \( N \) — Number of turns

Explanation: The AL value represents the inductance per turn squared, and the total inductance increases with the square of the number of turns.

3. Importance of Ferrite Core Calculations

Details: Accurate inductance calculation is crucial for designing efficient transformers, chokes, and inductors in electronic circuits.

4. Using the Calculator

Tips: Enter the AL value (typically provided in the ferrite core datasheet) and the desired number of turns. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find the AL value?
A: The AL value is specified in the ferrite core's datasheet, usually in nH/turn² or μH/turn² units.

Q2: What's a typical AL value range?
A: Common AL values range from 10 nH/turn² to 10,000 nH/turn² (0.01 to 10 μH/turn²) depending on core material and size.

Q3: How does core material affect the calculation?
A: Different ferrite materials have different permeability, which directly affects the AL value.

Q4: Can I calculate turns needed for a specific inductance?
A: Yes, rearrange the formula: \( N = \sqrt{L / A_L} \)

Q5: Does this account for air gaps?
A: No, this is for ungapped cores. Air gaps reduce the effective AL value and require separate calculation.