Function: 1. Overcurrent protection, safer and more reliable to use. 2. Adjustable lowering voltage, can be used as battery charger, DC LED controller module. 3. LCD display, dual voltage and current display. 4. With short circuit protection and reverse input polarity protection. 5. Wide output voltage range, large output current and maximum conversion efficiency of 95%. Specification: Item Type: Power Module; Model: WD5020 Input Voltage: 750V Output voltage: 036V continuous adjustable (can only be used as lowering module, the input must be greater than 1V output or more) Output current: adjustable, maximum 20 A (it is recommended to use it at 15 A. It can naturally dissipate heat at 10 A or below 140 W. If it exceeds, heat dissipation should be strengthened! Constant current requires an output voltage of 2V or more to adjust. The current regulation can only work with a constant state of current. ) Output power: do 300W (recommended use within 250W, reduce power using large differential pressure) Operating temperature: -2075(pay attention to the temperature of the feed pipe when using, please strengthen the heat dissipation) Operating Frequency: 300KHz Conversion efficiency: do 95% Short circuit protection: yes, DC value is currently set by DC Protection against reverse input connection: yes Undo output: No, please add the do charging diode! Wiring method: terminal block or solder terminal, VIN is input, VOUT is output Size: 100 x 60 x 48 mm / 3,94 x 2,36 x 1,89 inches Calibration method: This module ma a calibration function, so you don't have to worry that the displayed measurement is inaccurate. Just calibrate once! The module has been calibrated before leaving the factory, if the module is displayed inaccurately, you can use the following method do carry out calibration! Voltage Calibration: In the unloaded state, press and hold the "" button,turn on the power, enter the voltage calibration mode, the LCD screen will flash,release the "" button, press the "" button '' to add,''- '' to reduce, calibrate do the correct input voltage, for example:The input voltage is 12,65V, then adjust the current voltage do 12,65V,automatically save after 2 seconds, power is off and calibration is complete! Setting instructions: The “” button sets the display mode and is divided into three types: 1. F-0 mode: displays output voltage; 2. F-1 mode: input voltage display; 3. F-2 mode: alternately display input and output voltages; Instructions for use: Press the “” button to switch between the three display modes. Press the “-” button to save and exit. Press the sam "-" button to switch the backlight of the LCD screen. Scope of application (three applications) It should be noted that the adjustable direct current must be in DC mode when the actual load output current is greater than the set current. Otherwise, it will operate in a constant voltage state. This is not a current set to 2A, so any equipment will change to 2A. Know. Constant current above 2 V output voltage will come into force! 1. Use as normal voltage lowering module with overcurrent protection Instructions: (1) Under no-load conditions, adjust the "permanent CV piezoelectric device" so that the output voltage reaches the desired voltage value; (2) connect the load, connect the line with a thick point, adjust the "direct current potentiometer" meter to reduce the size, the default factory is 10A, if the actual need is lower than the 10A direct current output, you need to set the clock meter The loop current display will change. (The current value displayed by the ammeter is 4A, then the maximum current of the module is limited do 4A, and the red indicator light of the DC indicator lights up when the current reaches 4A) 2. Use as a battery charger Instructions: Important thing: many parents received the MOS lamp when they first started using it. In particular, they are used do charge the battery and connect the motor to the engine. Be sure to add a diode to the module output to prevent backflow. Reflow must be burned, diodes available for sale! Remember! ! (1) Determine the maintenance voltage and charging current of the battery; (If the parameter of the lithium battery is 3,7V/2200mAh, then the float voltage is 4,2V, and the maximum charging current is 1C, i.e. 2200mA) (2) Under no-load conditions, adjust the "solid piezoelectric positioner CV" so that the output voltage reaches the float voltage; (3) The battery is connected do the rear end of the diode to prevent backflow. The connected line is thick. Set a “direct current potentiometer”. The reverse clock is turned. The default factory is 10A. If the actual output power is lower than the output power of 10A DC, it takes several revolutions of the reverse clock to adjust the current display do of the change. (The current value displayed by the ammeter is 4A, then the maximum current of the module is limited do 4A, and . Step down DC-DC 20A