1、This DC regulated power supply DIY kit contains various electronic components that need to be assembled and soldered together by yourself. 2、The output voltage can be continuously adjusted from 0 to 30V. 3、Includes a circuit that limits the output current so that the output current can be continuously adjusted from 2mA to 3A. 4、Provide current limiting, LED display, over load and short circuit protection. 5、Easy to assemble and maintain. Features: This DC regulated power supply DIY kit contains various electronic components that need to be assembled and soldered together by yourself. The output voltage can be continuously adjusted from 0 to 30V. Includes a circuit that limits the output current so that the output current can be continuously adjusted from 2mA to 3A. Provide current limiting, LED display, over load and short circuit protection. Easy to assemble and maintain. Specification: Item Type: DC Regulated Power Supply DIY Kit Input Voltage: 24V AC (Max) Input Current: 3A (Max ) Output Voltage: 0-30V (continuously adjustable) Output Current: 2mA-3A (continuously adjustable) Output Voltage Ripple: 0.01% (Max) PCB Size: 84x84mm / 3.3x 3.3in   Package List: 1 x DC Regulated Power Supply DIY Kit  Note: Please install the resistances and diodes according to PCB diagram. Make sure resistance values, diode models and installation direction are correct. Please install other components from small to large, low to high.