Voltage Regulator Calculator

About This Tool

This calculator helps electronics enthusiasts and professionals determine the output voltage of an LM317 voltage regulator circuit based on resistor values R1 and R2. By inputting the resistor values in ohms, the user can instantly obtain the regulated voltage using the formula Vout = 1.25V * (1 + R2/R1). The tool supports precise decimal input and displays the result rounded to two decimals, ensuring accurate circuit design.
Designed with simplicity in mind, the interface features clearly labeled input fields, a prominent calculate button, and a results panel that updates automatically. Advanced users can enable optional features like calculation history to track past results or copy functionality for easy data transfer.
The embedded SVG icon visually represents a simplified voltage regulator with resistor symbols, styled in modern flat design, high contrast, and centered for optimal recognition. Localization options support regional numeric formats and technical terminology.
Ideal for students, electrical engineers, and hobbyists, this tool simplifies the process of designing stable power supplies and learning about voltage regulation circuits. It excludes complex simulation features, focusing solely on straightforward calculations to enhance productivity and learning.

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