Adjustable Voltage Regulator Step-down Electric Power Supply Module DIY Kit LM317 can be used for many different homemade. Radio amateurs can use it, for example, to create power supplies. When developing different devices, such a power supply is indispensable. To create it, you can use the adjustable voltage regulator LM317, which creates an internal reference voltage between the output and output voltage.
It is used when changing the input voltage and when changing loads to maintain a stable voltage. Since the LM317T is a smooth regulator, it determines the voltage difference between the output and the input and can maintain a stable voltage for a long time. Therefore, by installing a resistor between the control terminal and the output, you can use the device as a precision current regulator.
Cost: ~ 242