1. What is the Transformer Current Equation?

The transformer current equation calculates the secondary current based on the primary current and the turns ratio of the transformer. It demonstrates the inverse relationship between voltage and current in transformer operation.

2. How Does the Calculator Work?

The calculator uses the transformer current equation:

Where:

• \( I_s \) — Secondary current (A)
• \( I_p \) — Primary current (A)
• \( N_p \) — Number of primary turns
• \( N_s \) — Number of secondary turns

Explanation: The equation shows that current transforms inversely with the turns ratio, maintaining the power balance (ignoring losses) in an ideal transformer.

3. Importance of Current Calculation

Details: Accurate current calculation is essential for transformer design, circuit protection, load matching, and ensuring proper operation of electrical systems.

4. Using the Calculator

Tips: Enter primary current in amperes, and the number of turns for both primary and secondary windings. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Does this equation assume an ideal transformer?
A: Yes, this calculation assumes an ideal transformer with no losses, perfect coupling, and no leakage flux.

Q2: How does this relate to the voltage transformation ratio?
A: For an ideal transformer: V_p/V_s = N_p/N_s = I_s/I_p, showing the inverse relationship between voltage and current.

Q3: What are typical applications of this calculation?
A: This calculation is used in power distribution, electronics, transformer design, and electrical system analysis.

Q4: Are there limitations to this equation?
A: Real transformers have losses (copper losses, iron losses) and imperfect coupling, so actual secondary current may differ slightly.

Q5: Can this be used for both step-up and step-down transformers?
A: Yes, the equation works for both configurations. For step-up transformers (N_s > N_p), the secondary current will be less than the primary current.