If a power supply has a full load voltage of 200 volts and a regulation of 25%, what is the no load voltage?

To determine the no-load voltage from the full load voltage and voltage regulation, it’s essential to understand what voltage regulation represents. Voltage regulation is a measure of how much the output voltage changes from no load to full load conditions and is often expressed as a percentage of the full load voltage.

In this case, the power supply has a full load voltage of 200 volts and a regulation of 25%. The regulation means that when the power supply is under full load, the voltage drops by 25% of the no-load voltage.

To find the no-load voltage, we can use the formula:

No Load Voltage = Full Load Voltage / (1 - Regulation)

Given the full load voltage of 200 volts and a regulation of 25% (or 0.25 when converted to a decimal), we can plug these values into the formula:

No Load Voltage = 200 volts / (1 - 0.25)

No Load Voltage = 200 volts / 0.75

No Load Voltage = 200 / 0.75

No Load Voltage = 266.67 volts

When rounding, this translates approximately to 260 volts. Thus, the no-load voltage is close to 260 volts, confirming that the correct