Faithtech FT68200 Series, User Manual

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Faithtech FT68200 Operation Manual
58
3.22. Load Effect Test
The load effect test function is mainly used to test the load regulation rate of the power
supply. The implementation principle is: the load is loaded with constant current at low,
medium and high levels respectively, each current lasts for a period of time, and the input
voltage is measured. Finally, calculate the voltage change
∆V
, the load regulation rate, and
the power supply internal resistance Rs according to the following formula.
∆V = V
I_MIN
− V
I_MAX
Regulation = ∆V ÷ V
I_Normal
R
s
= ∆V ÷ (I_ MAX − I_MIN )
Operation Procedures
1. Press (Test) to go to “Test” function selection;
2. Rotate the knob to select “LOEF”, press and screen displays as follows:
Figure 3-25 Load Effect Test
3. Configure the parameters;
4. Press to start load effect test;
5. The display item in the readback area "
∆V
: 0.0000V" is the measured voltage
difference. "RA: 0.00%" display item is the test result, load regulation rate. And
"RS: 0.00m Ω " is the internal resistance test result of the power supply under test.
Parameter Explanation
Name Explanation
I_MIN Test current at low level
I_MAX Test current at high level