Secondary Voltage Calculator
Calculate transformer secondary voltage using primary voltage and turns ratio. Simple tool with formula, examples, and data tables for fast results.
transformer voltage ratio calculator
Vs = Vp x (Ns/Np) is used to obtain the secondary voltage of a transformer. This is an association between primary input and secondary output by coil turns ratio.
Formula & Table Summary:
| Formula | Description |
|---|---|
| Vs = Vp × (Ns/Np) | Secondary voltage formula |
| Ns > Np | Step-up: Vs > Vp |
| Ns < Np | Step-down: Vs < Vp |
transformer turns ratio formula
The Secondary Voltage Calculator is used to calculate the output voltage of a transformer with the primary voltage and turns ratio of the transformer. Formula: Vs = Vp × (Ns/Np).
calculate secondary voltage
| Primary Voltage (V) | Primary Turns (Np) | Secondary Turns (Ns) | Secondary Voltage (V) |
|---|---|---|---|
| 230 | 1000 | 500 | 115 |
| 120 | 200 | 400 | 240 |
| 24 | 50 | 200 | 96 |
| 400 | 800 | 100 | 50 |
Frequently Asked Questions - Secondary Voltage Calculator:
What is secondary voltage?
Secondary voltage is the output voltage of a transformer obtained from the secondary coil.
How do you calculate secondary voltage?
Use Vs = Vp × (Ns/Np), where Vp is primary voltage and Ns/Np is turns ratio.
What happens in a step-up transformer?
Secondary turns > primary turns, so secondary voltage > primary voltage.
What happens in a step-down transformer?
Secondary turns < primary turns, so secondary voltage < primary voltage.
Can primary and secondary voltage be equal?
Yes, when Ns = Np, the transformer has 1:1 ratio and Vs = Vp.
Does secondary voltage depend on load?
Ideally no, but in practice voltage drops slightly under heavy load due to resistance.
Why is turns ratio important?
It defines the relationship between primary and secondary voltages.
Can this calculator be used for 3-phase transformers?
Yes, apply the same formula per phase for voltage ratio calculations.
What units are used?
Voltage is measured in volts (V), turns are unitless ratios.
Is efficiency considered?
No, this formula assumes an ideal transformer without losses.
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