Transformer Calculator

Category: Physics

- May 27, 2025

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Calculate transformer parameters including voltage, current, turns ratio, power, and efficiency. This calculator helps engineers and students analyse and design transformers for various applications.

Transformer Information

Calculation Type:

Transformer Type:

Basic Parameters

Primary Voltage (V₁):

Primary Turns (N₁):

Secondary Voltage (V₂):

Secondary Turns (N₂):

Primary Current (I₁):

Secondary Current (I₂):

Display Options

Decimal Places:

Show calculation steps

Show formulas

About Transformers

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It is commonly used to increase (step up) or decrease (step down) voltage levels between circuits.

Transformer Principles

Electromagnetic Induction: Transformers work on the principle of Faraday's law of electromagnetic induction.
Turns Ratio: The voltage transformation is proportional to the turns ratio of the primary and secondary windings.
Power Conservation: In an ideal transformer, the input power equals the output power.
Current Ratio: Current is inversely proportional to the turns ratio.

Types of Transformers

Step-Down: Reduces voltage from primary to secondary (N₁ > N₂).
Step-Up: Increases voltage from primary to secondary (N₁ < N₂).
Isolation: Maintains same voltage but electrically isolates circuits (N₁ ≈ N₂).

Transformer Losses

Copper (I²R) Losses: Resistive losses in the windings.
Core Losses: Hysteresis and eddy current losses in the core.
Flux Leakage: Not all magnetic flux links both windings.
Magnetizing Current: Current required to establish magnetic field.

Understanding the Transformer Calculator

The Transformer Calculator is a handy tool for anyone working with transformers. This calculator allows you to determine important parameters like voltage, current, and turns ratio. It's designed for both engineering students and professionals. With it, you can easily analyze and design transformers for various uses.

Basic Parameters Made Simple

When you start using the calculator, you’ll first enter basic parameters. These include:

Primary Voltage (V₁)
Primary Turns (N₁)
Secondary Voltage (V₂)
Secondary Turns (N₂)
Primary Current (I₁)
Secondary Current (I₂)

These values help you understand how your transformer will operate in real-world conditions.

Calculating Efficiency & Losses

The calculator also helps you measure efficiency and losses in your transformer. You can input values for copper loss and core loss. This feature is key for determining how well your transformer performs. You’ll also enter the power factor and load percentage to get a clear picture of its efficiency.

Impedance & Regulation Insights

Another useful aspect of the Transformer Calculator is its ability to compute impedance and regulation. This helps you understand the voltage regulation and equivalent impedance of the transformer. You can add values for primary and secondary winding resistance, as well as reactance. Knowing these details is essential for designing efficient transformer systems.

Choosing Transformer Types

Different transformers serve various purposes. With this calculator, you can select the type you need, whether it's a step-down, step-up, or isolation transformer. Each type has specific characteristics that affect how it operates in a circuit. Understanding these differences is crucial for selecting the right transformer for your application.

Displaying Calculation Details

The calculator provides options for displaying calculation details. You can choose how many decimal places to show. There are also options to display calculation steps and formulas. This transparency can help you learn and understand transformer calculations better.

Getting Your Results

After entering your data, the Transformer Calculator will show you the results clearly. You'll see the turns ratio, primary and secondary voltages, and currents. Additionally, if you’ve calculated efficiency and impedance, those results will appear too. This instant feedback is great for making quick adjustments to your designs.

Learning About Transformers

To enhance your understanding, the calculator includes an informative section about transformers. You’ll learn about how they work and their key principles, such as electromagnetic induction and power conservation. It’s a great way to get background knowledge while using the tool.