Eletrônicos

Calculadora de Potência do Amplificador Gratuita — resolva para potência de saída, tensão RMS/pico/pico a pico e corrente usando a Lei de Ohm. Dimensione amplificadores acusticamente com requisitos de potência baseados em SPL, análise de headroom e estimativas de dissipação de calor para amplificadores Classe A, AB e D.

Free antenna length calculator for dipole, quarter-wave vertical, full-wave loop, inverted vee, 5/8-wave vertical, and 3-element Yagi antennas. Get exact lengths in both feet and meters instantly.

Free battery capacity calculator for runtime, charge time, and energy storage. Calculate how long your battery will last, how long it takes to charge, and design series/parallel battery banks.

Free Battery Runtime Calculator — estimate how long your battery will last under any load. Supports Standard (Ah/Wh), Peukert lead-acid, and IoT duty-cycle modes with chemistry presets and scenario comparison.

Free Dipole Antenna Calculator — compute half-wave, folded dipole, inverted vee, and full-wave antenna lengths in feet and meters from frequency. Includes velocity factor, impedance, balun recommendations, and ham radio band presets.

Free PCB Trace Width Calculator based on IPC-2221 and IPC-2152 standards. Calculate the minimum copper trace width required to safely carry a given current with your chosen temperature rise, copper weight, and layer type.

Free PCB via size calculator using IPC-2221 and IPC-2152 standards. Calculate via current capacity, resistance, voltage drop, power loss, aspect ratio, annular ring, inductance, and capacitance for through-hole, blind, buried, and microvias.

Free RC (Resistor-Capacitor) Time Constant (τ) calculator — compute τ = R × C, cutoff frequency, rise time, energy stored, and charging/discharging curves. Supports RC and RL circuits with solve-for-any mode.

Free Solar Panel Calculator — estimate the number of panels, system size, battery storage, and 25-year payback for residential and off-grid solar installations.

Calculadora de Crossover de Alto-falante Gratuita — projete redes de crossover passivas para sistemas de alto-falantes de 2 vias e 3 vias. Calcula valores de capacitor (µF) e indutor (mH) para filtros Butterworth, Linkwitz-Riley, Bessel e Chebyshev com suporte a Zobel e L-pad.