Electrical

Convert voltage gain ratio, dB, and input/output voltage, with an optional impedance-aware power gain check.

Find op amp slew rate, max sine frequency, or max output swing with peak, peak-to-peak, RMS, margin, and GBW checks.

Estimate op amp -3 dB bandwidth from GBW and gain, with noise-gain and slew-rate checks for your signal frequency.

Estimate linear regulator heat, chip temperature, current limit, efficiency, dropout margin, and heatsink needs.

Calculate zener diode power, series resistor value, current range, and safety margins for a simple shunt regulator.

Estimate diode drop, current with a resistor, or needed resistor size for a simple series diode circuit.

Estimate DC output, ripple, peak voltage, and diode PIV from AC RMS for bridge, center-tap, or half-wave rectifiers.

Find transformer turns ratio, voltage, coil turns, ideal current, apparent power, and reflected load with both ratio directions.

Calculate passive speaker crossover capacitor and inductor values for 2-way or 3-way builds, with E12/E24 part rounding.

Calculate antenna cut lengths from frequency in MHz for verticals, dipoles, loops, end-fed wires, and J-pole starters.