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Electronics Tools

LED Resistor Calculator

Calculate a safe series resistor and power rating for LEDs.

Electronics Tools

Ohm’s Law Calculator

Calculate voltage, current, resistance, and power from any two values.

Electronics Tools

Resistor Color-Code Calculator

Decode four-band and five-band resistor color markings.

Electronics Tools

Three-Oscillator Sound Generator

Combine three oscillators with fine tuning and LFO pitch or volume modulation.

You can change these choices at any time.