Power adjustment rate is defined as the ability to provide stable output voltage when the power supply input voltage changes

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Functional specifications for testing power testing techniques
Output voltage adjustmentdrop-in anchor
When manufacturing switching power supply, the first test steps to adjust the output voltage to within specifications. Complete this step in order to ensure follow-up specifications can meet.
Normally, when adjusting the output voltage, the input AC voltage is set to normal (115Vac or 230Vac), and the output current is set to normal or full load current, then a digital voltmeter to measure the value of the output voltage of the power supply and adjust its potentiometer (VR) until the voltage reading is within the scope of the request.load factor power plant
  
Power regulation
Power adjustment rate is defined as the ability to provide stable output voltage when the power supply input voltage changes. This test is used to verify that the power supply in the worst of the power supply voltage environment, such as the summer of noon (due to the high temperatures, whether the stability of the output power of electricity demand) the supply voltage minimum; (due to the low temperatures and if winter s night, the electricity demand minimum) the highest supply voltage. verify that the power supply in the aforementioned two extremes in line with the specifications of the demand.
In order to accurately measure the power regulation, the following equipment is required:
? Provide variable voltage capacity of the power supply, at least to provide the lowest of the power supply to be tested to the maximum input voltage range.
? Rms AC voltmeter to measure the input supply voltage.
? A precision DC voltmeter, with at least higher than adjust the rate of more than ten times that of the analyte.
? Connected to the DUT output variable load.
Typically test the connection of the device shown in Figure 1.
The test procedure is as follows: at the DUT power supply to the heat engine is stable under t he normal input voltage and load conditions, respectively, low input voltage (Min), normal input voltage (Normal), and high input voltage (Max) Measure and record its The output voltage value.
Power adjustment rate is usually a normal fixed load (Nominal Load), caused by the input voltage changes its output voltage deviation percentage rate (deviation), such as shown in the following formula:
V0 (max)-V0 (min)
V0 (normal)
Said power regulation can also be used in the following ways: input voltage changes, the output voltage deviation required provisions above the lower limit of the range, that is, the output voltage above the lower limit of the absolute value of less than.