Home
Back
Percentage Regulation Formula:
| From: | To: |
Percentage regulation is the term typically applied to a power supply. An ideal power supply should maintain a constant voltage as load is increased, but real power supplies do not do so. It measures how well a power supply maintains its output voltage from no-load to full-load conditions.
The calculator uses the Percentage Regulation formula:
Where:
Explanation: The formula calculates the percentage difference between the no-load voltage and the voltage under load conditions, relative to the loaded voltage.
Details: Good voltage regulation is crucial for stable operation of electrical equipment. Poor regulation can lead to equipment malfunction, reduced efficiency, and potential damage to sensitive electronic components.
Tips: Enter no-load voltage and loaded voltage in volts. Both values must be positive numbers. The calculator will compute the percentage regulation.
Q1: What is considered good voltage regulation?
A: For most power supplies, regulation better than 5% is considered good, with high-quality supplies achieving 1% or better regulation.
Q2: Why does voltage drop under load?
A: Voltage drops due to internal resistance in the power supply and connecting wires, as well as increased current draw from the load.
Q3: Can percentage regulation be negative?
A: Yes, negative regulation indicates that the output voltage increases under load, which can occur in some types of power supplies.
Q4: How does temperature affect voltage regulation?
A: Temperature changes can affect component values and internal resistance, potentially impacting the regulation performance of a power supply.
Q5: Is this calculation applicable to AC and DC systems?
A: The basic principle applies to both, though AC systems may have additional factors like power factor that affect voltage regulation.