This module is an adjustable step-down module, and the output voltage can be changed by adjusting the blue adjustable resistor on the module. The input and output voltage difference is 1V, and the small voltage can output 0.8V.
This module has the function of communicating with the computer. It is convenient for the computer to read the current and voltage data of the module, Since the output of this module is TTL level, in order to communicate with the computer, the level must be converted back to the RS232 level that the computer can recognize. This cp2102 usb to TTL module is needed to realize the conversion.
Note: input negative, input positive, output negative, and output positive marked on the module must be connected correctly, otherwise the module may be damaged.
Features:
- Measuirg accuracy: 0.1%
- Current Range: 0A-5A
- Voltage range: 5v-30V
- Operating current: less than 15mA
- Display Color: Red
- Temperature: -10°C to +65°C
- Input impedance: 50 MΩ
How to use
battery charging:
- Determine the float voltage and charging current you need to recharge the battery, and the input voltage of the module
- Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
- Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value
- The default shipping of the charging lamp current is 0.1 times the charging current (constant current value).
- Adjust the constant voltage potentiometer to make the output voltage reach the float voltage
- Connect the battery and try charging.
Steps 1, 2, 3, 4, and 5 are for the module input to connect to the power supply, and the output is no-load without battery.
LED constant current drive:
- Determine the working current and working voltage you need to drive the LED
- Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
- Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined LED working current
- Adjust the constant voltage potentiometer to make the output voltage reach the LED working voltage
- Connect the LED and try machine.
Steps 1, 2, 3, and 4 are to connect the module input to the power supply, and the output does not connect to the LED light when there is no load.
Package Includes:
- 1 x Constant 5A current and voltage LED drive lithium-ion battery charge module