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This is the LM317TG voltage regulator, a three-terminal positive regulator with a 1.2V to 37V adjustable output voltage.
The LM317L device is an adjustable, 3-terminal, positive-voltage regulator capable of supplying 100 mA over an output-voltage range of 1.25 V to 32 V.
The TL431A is a three-terminal adjustable regulator with a guaranteed thermal stability over applicable temperature ranges.
This module is a Battery Charger suitable for mobile phones. It has a dual USB interface, so you can charge two batteries at the same time.
Voltage Regulator L78L33ABZ-AP with 3.3V output voltage.