Test Aging Power Supply

Narrowly speaking, the load is the object of testing aging power supplies, and electronic loads can also be said to be adjustable resistors.

 

Test and aging certain power supply parameters, such as light load, full load, and heavy load, especially when electronic loads need to change the required parameters.

 

The common working modes of electronic loads include constant current mode, constant voltage mode, constant resistance mode, constant power mode, etc.

 

In constant current mode, the electronic load absorbs current at a set value in a given application environment, regardless of how the input voltage changes.

 

1. Constant current mode

In constant current mode, the electronic load absorbs current at a set value in a given application environment, regardless of how the input voltage changes.

2. Constant resistance mode

In this state, the load (such as a pure resistor) absorbs a current proportional to the voltage. This method is suitable for initializing and testing appearance. Limit the current of the power supply voltage and current source

In constant resistance mode, the electronic load absorbs the input voltage as a linear load current.

3. Constant pressure mode

In constant voltage mode, the electronic load consumes enough current to adjust the voltage to the design value. The constant voltage mode can be used to test the current limiting characteristics of the power supply. In addition, this load can be used to test battery chargers as it can simulate the polarity voltage of the battery.

4. Constant power mode

In terms of constant power function, most electronic loads operate through constant current circuits. Firstly, let's take the MCU that calculates the input voltage as an example, and then we can calculate the output current based on the set power value.