The formula to calculate the no load voltage (Vn) is:
\[ V_{n} = V_{f} + \left( \frac{V_{f} \times LR}{100} \right) \]
Where:
Let's say the full load voltage (\( V_{f} \)) is 120 volts and the load regulation (\( LR \)) is 5%. Using the formula:
\[ V_{n} = 120 + \left( \frac{120 \times 5}{100} \right) \]
We get:
\[ V_{n} = 120 + 6 = 126 \]
So, the no load voltage (\( V_{n} \)) is 126 volts.
No load voltage is the voltage output of a power supply when it is not connected to any load. It is typically higher than the full load voltage due to the absence of voltage drop caused by the load current. This measurement is important for understanding the performance and efficiency of power supplies.
