Professional calculators and simulators for circuit design and component analysis
Whether you're a student, hobbyist, or professional engineer, these interactive tools help you design circuits, calculate component values, and understand fundamental electronics principles. From basic Ohm's Law to complex component decoders, everything you need is here.
All tools feature real-time calculations, visual feedback, and educational explanations to help you learn while you design.
Decode resistor color bands instantly. Supports 4-band and 5-band resistors with visual representation and tolerance information.
Calculate equivalent resistance for multiple resistors in parallel. Support for 2 to 10 resistors with detailed calculation steps.
Design safe circuits with fusible resistors. Calculate fusing current, safe operating limits, and failure characteristics.
The fundamental electronics calculator. Calculate voltage, current, resistance, or power with interactive formula visualization.
Design perfect LED circuits every time. Calculate the ideal current limiting resistor with voltage drop and power dissipation.
Design voltage divider circuits with precision. Calculate resistor values or output voltage with load consideration.
Interactive metal oxide varistor simulator for surge protection circuit design. Visualize V-I characteristics and clamping behavior.
Interactive potentiometer simulator with real-time feedback. Rotate the dial and watch resistance and voltage change dynamically.
Decode potentiometer markings and 3-digit codes. Find resistance values, tolerances, and taper types from cryptic markings.
Decode SMD resistor and capacitor codes including 3-digit, 4-digit, and EIA-96 marking systems. Essential for modern electronics.
Interactive virtual breadboard for designing and prototyping circuits. Features drag-and-drop components, wire routing, and circuit visualization based on Ben Eater's 6502 computer tutorial.