Ideal Transformer Calculator
Calculate transformer turns ratio, voltage ratio, and secondary parameters
Volts (V)
Volts (V)
Number of turns
How to Use This Calculator
Enter Voltages
Enter primary and secondary voltages. The calculator will determine the turns ratio.
Enter Primary Turns (Optional)
If you know primary turns, enter it to calculate secondary turns.
Get Results
Click calculate to see turns ratio and secondary turns (if primary turns provided).
Formula
V2 / V1 = N2 / N1
N2 = N1 × (V2 / V1)
Where:
- V1 = Primary voltage (V)
- V2 = Secondary voltage (V)
- N1 = Primary turns
- N2 = Secondary turns
Example:
Primary = 120 V, Secondary = 12 V, Primary Turns = 1000
N2 = 1000 × (12 / 120) = 1000 × 0.1 = 100 turns
About Ideal Transformer Calculator
The Ideal Transformer Calculator calculates transformer parameters assuming an ideal transformer (no losses, perfect coupling). It determines turns ratio and secondary turns based on voltage ratios and primary turns.
When to Use This Calculator
- Transformer Design: Calculate turns for transformer design
- Voltage Conversion: Determine transformer parameters for voltage conversion
- Educational Purposes: Learn about transformer theory
- Circuit Analysis: Analyze transformer circuits
Why Use Our Calculator?
- ✅ Accurate Calculations: Uses ideal transformer formulas
- ✅ Easy to Use: Simple interface
- ✅ Free Tool: No registration required
- ✅ Educational: Includes formulas and examples
Common Applications
Step-Down Transformers: Convert high voltage (120V) to low voltage (12V) for power supplies and electronics.
Step-Up Transformers: Increase voltage for applications like neon signs or high voltage power supplies.
Tips for Accurate Results
- Ideal transformer assumes no losses
- Voltage ratio equals turns ratio
- Real transformers have losses (typically 2-5%)
- For real transformers, account for efficiency
Frequently Asked Questions
What is an ideal transformer?
An ideal transformer has no losses, perfect magnetic coupling, and infinite permeability. It's a theoretical model used for calculations. Real transformers have losses due to resistance, core losses, and leakage flux.
What is the turns ratio?
The turns ratio is the ratio of secondary turns to primary turns (N2/N1). It equals the voltage ratio (V2/V1) for ideal transformers.
How do real transformers differ?
Real transformers have losses (copper losses, iron losses), leakage inductance, and finite permeability. Efficiency is typically 95-99% for power transformers. The calculator assumes ideal conditions.