1. What is an EI Core Inductor Design Calculator?

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

Purpose: It helps electrical engineers and hobbyists design transformers and inductors using EI core materials.

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 EI Core Inductor Design

Details: Proper inductor design ensures efficient energy storage, minimal core losses, and optimal performance in power electronics applications.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: What is the AL value?
A: The AL value is the inductance factor provided by the core manufacturer, representing the inductance per turn squared.

Q2: How do I find the AL value for my core?
A: Check the core's datasheet or measure it experimentally with a known number of turns.

Q3: Why does inductance increase with the square of turns?
A: Because both the magnetic flux and the number of flux linkages increase with turns, resulting in a squared relationship.

Q4: What's a typical AL value range?
A: Common AL values range from 1nH/turn² to 10mH/turn² depending on core material and size.

Q5: How does air gap affect the calculation?
A: Air gaps reduce the effective AL value. Use the gapped AL value if your core has an air gap.