A collection of educational HTML5 visualisation tools
See the direct relationship between the unit circle and the sine wave. Rotate the angle and watch both representations update simultaneously.
Interactive →Builds on the waveform playground by adding root-mean-square (RMS) calculations and visualisation for each waveform type.
Interactive →Interactive educational tool demonstrating three-phase alternating current. Visualise phase relationships, voltage waveforms, and power delivery.
Interactive →Navigate the full electromagnetic spectrum from radio waves to gamma rays. Compare wavelength and frequency across different bands.
Interactive →See how summing sine harmonics builds square, triangle, and sawtooth waves. Adjust the number of terms and watch the approximation improve.
Interactive →Visualise a series or parallel RLC circuit as a phasor diagram. Drag sliders for resistance, inductance, capacitance and frequency and watch the voltages/currents and impedance/admittance triangle update live.
Interactive →See how a solar panel, thermocouple, piezo element, magnet generator and chemical battery turn energy into electricity. Move each source back and forth and watch voltage, current and power change live.
Interactive →Drag AA cells from the supply onto the rack. Stack cells in a column for series voltage, spread them across columns for parallel capacity — watch EMF, internal resistance, current, power and the bulb brighten.
Interactive →Drag a bead along the prefix ladder from pico to tera and watch values in engineering notation. Convert any value across every prefix, and click real component values — capacitors, resistors, frequencies.
Interactive →Type expressions like a terminal and hit Enter. Power, factorial, trig, bases (DEC/HEX/BIN), SI prefixes, unit conversion, plus your own variables and functions.
Interactive →20 multiple-choice questions per tool on the Alternating Current (AC) fundamentals submodule. Pick a tool, answer with instant feedback, or edit / add / delete questions — saved in your browser.
Quiz →Watch Kirchhoff's laws come alive: see voltages sum to zero around a series loop (KVL) and currents balance at a junction node (KCL), with live electron flow.
Interactive →Watch a capacitor charge and discharge through a resistor. See the exponential Uc and current curves, the time constant τ = RC, and the 5τ "fully charged" rule.
Interactive →Set a battery voltage and resistance and watch the current flow around a simple series circuit with live I = V / R animation.
Interactive →See how a transformer steps voltage up or down with the turns ratio. Watch primary and secondary sine waves change as you adjust Np, Ns and load.
Interactive →A curated collection of recommended interactive simulations and educational resources from other providers to complement these tools.
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