1. What is the Transformer Voltage Equation?

The transformer voltage equation relates the input and output voltages of a transformer to the number of turns in its primary and secondary windings. It demonstrates the fundamental principle of how transformers change voltage levels in AC circuits.

2. How Does the Calculator Work?

The calculator uses the transformer voltage equation:

Where:

• \( V_{out} \) — Output voltage (volts)
• \( V_{in} \) — Input voltage (volts)
• \( N_{secondary} \) — Number of turns in secondary winding
• \( N_{primary} \) — Number of turns in primary winding

Explanation: The equation shows that the voltage ratio is equal to the turns ratio between the secondary and primary windings.

3. Importance of Transformer Voltage Calculation

Details: Calculating transformer output voltage is essential for designing power systems, selecting appropriate transformers, and ensuring proper voltage levels for electrical equipment.

4. Using the Calculator

Tips: Enter input voltage in volts, number of turns for both primary and secondary windings. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Does this equation work for both step-up and step-down transformers?
A: Yes, the same equation applies to both. A turns ratio >1 gives step-up, while <1 gives step-down.

Q2: Is this calculation affected by frequency?
A: The basic voltage ratio isn't frequency-dependent, but transformer design must consider frequency for core selection.

Q3: How accurate is this calculation for real transformers?
A: It gives ideal values. Real transformers have losses (copper, core) that slightly reduce output voltage under load.

Q4: Can I use this for multiple secondary windings?
A: Yes, apply the equation separately to each secondary winding using its specific turns count.

Q5: Does this apply to autotransformers?
A: The principle is similar but the calculation differs since primary and secondary share part of the winding.