Electrical Engineering Suite

This suite bundles five distinct electrical calculations that a hobbyist or student tends to reach for in the same sitting, each built on its own well-established formula. Ohm's Law mode solves the triangle relationship between voltage, current, and resistance (V = I × R) for whichever variable you're missing, and layers on power (P = V × I) plus daily energy consumption automatically — power is always derived this way, so the Power input field itself is collected but never read, regardless of which variable you're solving for. Voltage drop mode addresses a genuinely practical wiring problem — a wire isn't a perfect conductor, so running current through any real length of it loses some voltage to the wire's own resistance, and this mode uses standard AWG wire-gauge resistance tables (accounting for aluminum's roughly 60% higher resistance than copper) to compute that loss, check it against the National Electrical Code (NFPA 70)'s 3% branch-circuit and 5% total-circuit guidelines — published as Informational Notes to sections 210.19(A) and 215.2(A)(1), non-binding design recommendations rather than a blanket numeric requirement — reported in the necCompliance output, and suggest the thinnest wire gauge that still keeps the drop under 3%.

Resistor color code mode decodes the painted bands on a physical resistor into its actual resistance value and tolerance range, following the standard 4-band and 5-band color conventions used industry-wide. Series/parallel mode applies the two different rules that govern how resistors combine — total resistance simply adds in series, but adds as reciprocals in parallel — and reports each individual resistor's own voltage, current, and power dissipation within the combined circuit. Capacitor mode covers AC behavior specific to capacitors: how much a capacitor resists alternating current at a given frequency (reactance), how much charge and energy it stores at a given voltage, and its RC time constant against a reference 1kΩ resistor.