1. What is the Transformer Voltage Ratio?

The transformer voltage ratio describes the relationship between the input and output voltages of a transformer, which is directly proportional to the ratio of the number of turns in the secondary and primary coils.

2. How Does the Calculator Work?

The calculator uses the transformer voltage ratio equation:

Where:

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

Explanation: The voltage ratio is directly proportional to the turns ratio. Increasing secondary turns increases output voltage, while increasing primary turns decreases output voltage.

3. Importance of Voltage Ratio

Details: Understanding the voltage ratio is crucial for designing transformers for specific applications, whether stepping up or stepping down voltage for power transmission or electronic circuits.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Does this equation work for ideal transformers?
A: Yes, this equation describes an ideal transformer with no losses. Real transformers have additional factors like core losses and winding resistance.

Q2: What is the relationship with current?
A: For an ideal transformer, \( V_{in} \times I_{in} = V_{out} \times I_{out} \). Current is inversely proportional to voltage.

Q3: Can I use this for step-up and step-down transformers?
A: Yes, the equation works for both. When \( N_{out} > N_{in} \) it's step-up, when \( N_{out} < N_{in} \) it's step-down.

Q4: How accurate is this for real transformers?
A: It gives the theoretical maximum. Real transformers have efficiency losses (typically 95-99% for large power transformers).

Q5: Does frequency affect the voltage ratio?
A: Not directly in the ratio, but transformers must be designed for specific frequencies to operate properly.