VARIABLE_POWER_SUPPLY

The three terminals are input pin, output pin, and adjustment pin of LM317 .This LM317 circuit is capable to provide variable DC power supply with an output of 1A and can be adjusted up to 30V.

The circuit consists of a low-side resistor and high-side resistor connected in series forming a resistive voltage divider which is a passive linear circuit used to produce an output voltage which is a fraction of its input voltage.

Decoupling capacitors are used for decoupling or to prevent undesired coupling of one part of an electrical circuit from another part. To avoid the effect of noise caused by some circuit elements over the remaining elements of the circuit, the decoupling capacitors in the circuit are used for addressing the input noise and output transients. A heat sink is used with the circuit to avoid the components getting overheated due to more power dissipation.