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Secondary Voltage Calculator

Quickly calculate the secondary voltage of a transformer using our free Secondary Voltage Calculator. Learn the formula, steps, and examples in simple terms.

Transformers help change voltage levels in electrical circuits. They play a big role in power systems. Our Secondary Voltage Calculator makes it easy to find the output voltage of a transformer. You don’t need to do manual math or remember complex equations. Just enter the primary voltage, primary current, and secondary current and the calculator gives you the result in seconds.

Let’s explore what secondary voltage means and how you can calculate it.

What is a Secondary Voltage?

The secondary voltage is the voltage produced at the output side of a transformer. It depends on how the electric current changes between the primary and secondary windings.

In simple words, when electricity enters the transformer at one voltage and exits at another, that output voltage is called the secondary voltage. It can be higher or lower than the input, depending on the type of transformer.

For example, when a transformer reduces 240 volts to 12 volts for home electronics, 12 volts is the secondary voltage.

Secondary Voltage Formula

The formula to calculate secondary voltage is:

V₂ = V₁ × I₁ / I₂

Where:

  • V₂ = Secondary Voltage (volts)
  • V₁ = Primary Voltage (volts)
  • I₁ = Primary Current (amps)
  • I₂ = Secondary Current (amps)

This formula comes from the principle of power balance in transformers, where input power equals output power (ignoring small losses).

Example:

If the primary voltage is 300 volts, the primary current is 2 amps, and the secondary current is 3 amps:

V₂ = 300 × 2 / 3 = 200 volts

So, the transformer’s secondary voltage is 200 volts.

How to Calculate a Secondary Voltage?

You’ll love how simple it is to find the secondary voltage with our calculator.

  1. Enter the primary voltage (V₁).
  2. Enter the primary current (I₁).
  3. Enter the secondary current (I₂).
  4. Click “Calculate.”

That’s it! The calculator instantly shows the secondary voltage (V₂) in your chosen unit.

You can even switch between volts, kilovolts, or millivolts, depending on your need.

How the Secondary Voltage Calculator Works

This calculator uses the same physics principle found in textbooks. It multiplies the primary voltage by the primary current, then divides by the secondary current.

If you enter the numbers right, it’ll never fail you. It even checks your input for example, it warns you if you enter zero for current, which would make the math invalid.

Think of it like this:

If more current flows on one side of the transformer, the voltage on the other side changes to keep power balanced.

Final Verdict

The Secondary Voltage Calculator is a fast and reliable way to compute transformer output voltage. It turns complex physics into a simple, clear process.

You’ll never need to stress about remembering formulas again. Just enter your values and get your results right away.

Whether you’re studying transformers or testing a circuit, this tool makes voltage calculations easy and fun.

FAQs

What is a secondary voltage?

It’s the output voltage from a transformer’s secondary winding. It changes based on current and turns ratio.

How do I calculate secondary voltage manually?

Use the formula: V₂ = V₁ × I₁ / I₂. Multiply the primary voltage by the primary current, then divide by the secondary current.

Can secondary voltage be higher than primary voltage?

Yes. In a step-up transformer, the secondary voltage is higher than the primary voltage.

What happens if secondary current is zero?

The formula becomes invalid because you can’t divide by zero. Always use a positive current value.

Why does secondary voltage matter?

It helps ensure the correct voltage is supplied to electrical devices. Too high or too low voltage can damage equipment or reduce efficiency.