Electromagnetics & Circuit Simulators

Calculate skin depth from frequency and material. Display current density decay curve and comparison of multiple materials.

Display time constant and step response curve in real time. Compare overdamped, critically damped, and underdamped RLC responses.

Calculate turns ratio, core cross-section, and B-H loop. Display peak efficiency point on efficiency vs. load curve.

Real-time visualization of electric field vectors and equipotential lines from point charge configurations. Interactive calculation of Coulomb force and potential.

Simulate capacitor charge and discharge curves and stored energy in an RC circuit. Display time history of voltage, current, and energy with time constant tau.

Calculate inductance, magnetic flux density, and magnetic field strength of a solenoid coil from number of turns and dimensions. Supports coil design optimization.

Real-time calculation of transfer functions and gain for inverting, non-inverting, differential, and integrator op-amp circuits. Frequency response (Bode plot) also displayed.

Simulate the transient response of inductor current and voltage in an RL circuit. Visualize time constant L/R, step response, and impulse response.

Simulate battery charge/discharge characteristics using an equivalent circuit model (internal resistance and OCV). Visualize SOC-OCV curve and temperature dependence.

Calculate radiation pattern, gain, and impedance of a dipole antenna from frequency and length. Draw directivity pattern on canvas.

Calculate induced EMF from magnetic flux change using Faraday's law. Animate the approach and withdrawal of a magnet toward a coil.

Calculate resonant frequency, Q factor, and bandwidth for series and parallel RLC circuits. Real-time visualization of impedance frequency characteristics.

Calculate series, parallel, and combined resistor circuits using Ohm's Law. Real-time calculation of equivalent resistance, current, voltage, and power for each element.

Calculate radiation pattern, array factor, and beamwidth of uniform linear arrays in real time. Visualize beam steering via phase shifting.

Calculate operating point, voltage gain, and input/output impedance for BJT bipolar transistor amplifiers. Supports 4 types of bias circuits.

Calculate required transmit power from transmit/receive antenna gains, free-space path loss, and margin. Supports link design for satellite communications and Wi-Fi.

Load flow calculation for small power systems using the Gauss-Seidel method. Calculate bus voltage, current, and active/reactive power flow.

Compare initial permeability, saturation flux density, and coercivity of ferrite, silicon steel, and amorphous materials via B-H curves. Useful for magnetic circuit design.

Design microwave filter order, cutoff frequency, and ripple for Butterworth and Chebyshev characteristics. Display equivalent circuit and transfer function.

Calculate output torque, current, and efficiency of inverter-driven motors under V/f and vector control. Real-time speed-torque characteristic display.

Calculate combined SPL from multiple noise sources on a 2D grid and generate isocontour maps. Useful for environmental noise assessment and regulatory compliance.

Calculate oscillation frequency and stability conditions for Colpitts, Hartley, and Wien bridge oscillators. Visualize relationship between circuit constants and frequency.

Calculate duty ratio, output voltage, and ripple current for DC-DC converters (Buck, Boost, Buck-Boost). Supports switching power supply design.

Calculate fault current, impedance, and protection relay settings for three-phase symmetrical short circuits. Power system protection design per IEC and ANSI standards.

Calculate operating point bias design for BJT and FET transistors. Optimize stability factor, temperature drift, and bias resistors.

Visualize RC circuit capacitor charge/discharge with real-time graphs. Instantly calculate time constant τ=RC, 63.2% reach time, and peak current.

Calculate attenuation loss, propagation delay, bandwidth-distance product, NA, V-number, and mode classification for optical fiber links in real time.

Calculate threshold current, slope efficiency, longitudinal mode spacing, and round-trip gain for laser diodes and solid-state lasers in real time.

Calculate WPE, junction temperature, luminous flux, and thermal resistance in real time. Covers LED driver current, thermal resistance, and bin selection.

Calculate loss budget, dispersion penalty, power margin, OSNR, and receiver sensitivity for optical fiber transmission links in real time.

Calculate responsivity, NEP, specific detectivity D*, SNR, shot noise, and thermal noise in real time with visualization.

Calculate d33/d31 piezoelectric constants, charge sensitivity, resonance frequency, and electromechanical coupling coefficient k for sensors and actuators.

Calculate step angle, holding torque, torque-speed curve, microstepping resolution, and resonance frequency in real time with visualization.