Step-Down Module With LM2596S

This module lowers the input voltage on the specified output voltage that you adjust through the trimmer on the board. It's very practical because while changing the input voltage, the output voltage always stays the same. However, the input voltage has to be at least 0.7V higher than the output voltage. Input voltage is IN+ and IN-, while the output is OUT+ and OUT- . A power supply is able only to bring the voltage down, not up! It does not have a protective diode in case of the wrong polarity, pay attention while connecting!