Adjustable Voltage Regulator Circuit Using LM317
The schematic shown above represents a simple adjustable voltage regulator circuit built around the LM317, a popular linear voltage regulator IC. This circuit is commonly used in electronic projects to derive a stable and adjustable output voltage from a higher, unregulated DC input. Key Components: U1 - LM317: A 3-terminal adjustable voltage regulator. It allows for output voltage adjustment from 1.25V to about 37V, given a suitable input. RP1 - Variable Resistor (Potentiometer): Used to adjust the output voltage. R1 (100Ω): Works in conjunction with RP1 to set the output voltage using the formula: C1 (0.1µF): Input bypass capacitor to improve stability and filter noise. C2 (1µF): Output bypass capacitor for transient response and further noise filtering. U2 (Connector - Input): DC voltage input connector. U5 (Connector - Output): Regulated DC voltage output connector. How the Circuit Works: DC Input is supplied at connector U2. C1 filters any high-f...