Electronics learning resources
Learn to identify common resistor values, decode color bands, and explore how resistors and a load affect a voltage-divider circuit.
Published lessons and tools
Learn resistor identification and voltage-divider behavior, decode resistor bands with the interactive calculator, and explore Thevenin equivalents with matching tools.
Decode 4-band and 5-band resistors with digit, multiplier, and tolerance tables plus checked examples.
Read the resistor color-code lessonCalculate the output of a two-resistor divider with and without a load connected.
Read the voltage-divider lessonConnect voltage, current, and resistance with Ohm’s law, calculate power dissipation, and check resistor wattage ratings.
Read the Ohm’s law lessonFind Thevenin voltage and resistance for a loaded voltage divider, with a worked example and clear assumptions.
Read the Thevenin lessonAdjust the source and resistors in a loaded voltage divider and see the equivalent circuit and results update.
Open the circuit calculatorDecode 4-band and 5-band resistors, preview colored bands on a visual resistor, and calculate nominal ohms and tolerance ranges.
Calculate resistor valuesBrowse the programming tutorials and tools currently available on TeachyLeaf.
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