ITEM NAME:0-30V 2mA-3A Adjustable DC Regulated Power Supply DIY Kit Short with Protection Descriptio n Description: Circuit features: All the in-line components are easy to install and maintain. The output voltage is easy to adjust. Output current limit state is indicated by LED; When the output current exceeds the limit current, it will automatically switch to the constant current mode, providing full protection against overload or fault. The kit does not include radiator and fan. You can bring your own or choose from the store. There is an external connection of 24V cooling fan on the board. This circuit adjustment tube must add enough radiator or fan to operate with load, remember! Otherwise, the adjustment tube will be damaged due to overheating. Potentiometer can be directly welded to the board, also can lead to the panel installation, the kit is equipped with connecting socket and connecting wire The power transformer should choose 24V ac output (or double 12V, the center tap is vacant, not higher than this voltage), and the power can be selected as needed. If 30V3A is needed, the power of the transformer should be greater than 90W. Circuit adjustment: 1. Set the voltage adjustment potentiometer at the minimum position (counter-clockwise rotation to the minimum), adjust RV1 (100K adjustable resistor), and make the output voltage 0V: The maximum output voltage does not need to be adjusted. 24V ac input is used, and the maximum output voltage is about 31V: 2. Limit the output current setting: determined by current potentiometer position, is below 10 v voltage, 10 the load resistance, adjust current potentiometer the LED light, current potentiometer to 1 a position at this time, into a state of constant current circuit, voltage regulating potentiometer, voltage will not continue to rise, you can see current at 1 a current limit state: Specifications: Input Voltage: 24V AC (Maximum) Input Current: 3A (Maximum) Output Voltage: 0-30V Continuously Adjustable Output L.Input Current: 3A (Maximum). When the output current exceeds the limit current, it will automatically switch to the constant current mode, providing full protection against overload or fault. The kit does not include radiator and fan.
