EM–001 / MODULAR SCIENTIFIC CALCULATOR

What determines the speed of an electromagnetically driven disk? Voltage, coil current, magnetic strength, friction and load all play a role. The EM-001 Laboratory Calculator brings these factors together in an interactive tool that helps users explore how a motor behaves.

Designed to resemble a physical scientific calculator, EM-001 features a single LCD-style screen, tactile-looking buttons and a numeric keypad. Its distinctive feature is its expandable calculation structure: each factor button opens its own calculator, allowing users to follow a result through its underlying inputs.

For example, opening the torque calculator leads to coil current and the torque coefficient. Following the torque coefficient reveals magnetic flux linkage, which connects to coil turns, effective magnetic field, pole area and winding factor. Users can explore the calculation step by step instead of seeing only the final answer.

Each calculator offers ASSUME and CALCULATE modes. Users can enter an assumed value or use the available formula to calculate it. Applied changes update linked results, making it easy to compare scenarios and understand which factors influence performance.

The initial electromagnetic disk model predicts approximately 764 RPM under its default assumptions. Users can change current, supply voltage, magnetic coupling, friction or shaft load and observe the revised prediction. Additional calculators cover rotational inertia, coil resistance, winding temperature, electrical input power, rim speed and stored rotational energy.

Built with CodeIgniter 3, PHP, HTML, CSS and JavaScript, EM-001 combines a familiar calculator interface with an extensible calculation engine. Memory controls, input validation and mobile-friendly styling support everyday use, while its modular design provides a foundation for adding further experiments and formulas.

EM-001 is an educational simulation tool. Its results depend on the selected model and assumptions, helping users investigate ideas and compare possibilities before validating them through physical measurements.

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