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Principle and precautions of programmable DC power supply

Release date：2024-05-20

Programmable DC power supply has two programming methods, one is active, the other is passive. The passive programming algorithm is to change the reaction resistance and the input resistance to change the output value. The active programming algorithm is to change the output value of the reference voltage and the current of the reference. Secondly, there is the programming speed of the power supply. Programmable DC power supply has two programming methods, one is active, the other is passive. The passive programming algorithm is to change the reaction resistance and the input resistance to change the output value. The active programming algorithm is to change the output value of the reference voltage and the current of the reference.

Programmable DC power supply should pay attention to two points, one is the battery simulation function, in the actual test power supply circuit or device, to use the battery characteristics of the performance of the test source, because the resistance is changing, so the battery-powered equipment in the internal resistance will appear voltage drop. The second is the programmable rise time. For example, when testing the LED, the moment when the power supply is turned on is much larger than the current when the LED is stable, which may lead to damage during the LED. Therefore, before the test, the power supply will be set to a constant current state to avoid current overshoot.

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