Step Down Voltage Calculator

Formula

The formula to calculate the Step Down Voltage is:

$SDV = \frac{Ns}{Np} \times Vp$

Where:

$SDV$ is the Step Down Voltage (volts)
$Ns$ is the number of turns in secondary
$Np$ is the number of turns in primary
$Vp$ is the voltage in primary (volts)

What is Step Down Voltage?

Step Down Voltage refers to the reduced voltage obtained from a transformer when the number of turns in the secondary coil is less than the number of turns in the primary coil. This is commonly used in electrical applications to lower the voltage to a safer or more usable level.

Example Calculations

Example 1:

Number of Turns in Secondary (Ns) = 50
Number of Turns in Primary (Np) = 200
Voltage in Primary (Vp) = 120 volts

Using the formula:

$SDV = \frac{50}{200} \times 120 = 30 \, \text{volts}$

The Step Down Voltage (SDV) is 30 volts.

Example 2:

Number of Turns in Secondary (Ns) = 25
Number of Turns in Primary (Np) = 100
Voltage in Primary (Vp) = 240 volts

Using the formula:

$SDV = \frac{25}{100} \times 240 = 60 \, \text{volts}$

The Step Down Voltage (SDV) is 60 volts.