Enter the number of turns in secondary, the number of turns in primary, and the voltage in primary (volts) into the calculator to determine the Step Down Voltage.

## Step Down Voltage Formula

The following formula is used to calculate the Step Down Voltage.

SDV = Ns/Np * 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)

## How to Calculate Step Down Voltage?

The following example problems outline how to calculate Step Down Voltage.

Example Problem #1

1. First, determine the number of turns in secondary. In this example, the number of turns in secondary is determined to be 34 .
2. Next, determine the number of turns in primary. For this problem, the number of turns in primary is measured to be 14 .
3. Next, determine the voltage in primary (volts). In this case, the voltage in primary (volts) is found to be 23.
4. Finally, calculate the Step Down Voltage using the formula above:

SDV = Ns/Np * Vp

Inserting the values from above and solving the equation yields:

SDV = 34/14 * 23 = 55.85 (volts)

Example Problem #2

Using the same method as above, determine the variables required by the equation. For this example problem, these are:

number of turns in secondary = 3

number of turns in primary = 6

voltage in primary (volts) = 200

Enter these given values into the calculator or above yields:

SDV = 3/6 * 200= 100 (volts)