Understand when resistors are in series or parallel, how to calculate equivalent resistance, and why current, voltage, tolerance, and power behave differently.
5 min read
Guides tagged “Resistors”
5 in-depth guides on Resistors with formulas, conversion tables, and practical examples from Calcflux.
← All tagsWhy a voltage divider changes when a load is attached, how Thévenin resistance predicts the error, and when to buffer or redesign the divider.
4 min read
Pick resistor values that satisfy the math and the hardware: tolerance, power, E-series availability, input impedance, noise, and heat.
4 min read
Step-by-step LED resistor sizing with worked examples for Arduino indicators, 12 V automotive LEDs, series chains, and parallel branches. Covers the formula, E-series values, power ratings, and when to switch to a constant-current driver.
10 min read
Full color code chart for 4, 5, and 6 band resistors plus SMD codes and E-series preferred values. Worked examples, mnemonics, and field tips.
13 min read