1. What is a Transformer Current And Turn Calculator?

Definition: This calculator determines the secondary current in a transformer based on the primary current and the turns ratio between primary and secondary windings.

Purpose: It helps electrical engineers, technicians, and hobbyists design and analyze transformer circuits.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( I_{secondary} \) — Current in secondary winding (amperes)
• \( I_{primary} \) — Current in primary winding (amperes)
• \( N_{primary} \) — Number of turns in primary winding
• \( N_{secondary} \) — Number of turns in secondary winding

Explanation: The current in the secondary winding is inversely proportional to the turns ratio between primary and secondary windings.

3. Importance of Transformer Current Calculation

Details: Proper current calculation ensures correct transformer sizing, prevents overheating, and maintains system efficiency.

4. Using the Calculator

Tips: Enter the primary current in amperes, primary turns count, and secondary turns count. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the relationship between turns ratio and current?
A: Current is inversely proportional to the turns ratio. Higher turns ratio means lower secondary current.

Q2: Does this calculator account for transformer losses?
A: No, this calculates ideal transformer behavior. For real transformers, efficiency is typically 95-99%.

Q3: Can I use this for step-up and step-down transformers?
A: Yes, the same formula applies to both step-up and step-down configurations.

Q4: How do I measure primary current?
A: Use a clamp meter or multimeter in series with the primary winding under load.

Q5: What if I know the voltage ratio instead of turns?
A: For ideal transformers, turns ratio equals voltage ratio (V_primary/V_secondary).