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Original by Rajveer

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Builds a brand new app from the first prompt only, so later changes to the original are not included.

Build a complete, interactive, professional web application named "Rajveer Electrical Engineering Lab".

MAIN OBJECTIVE:
Create an educational electrical engineering laboratory and physics simulator covering the core subjects and practical components taught throughout a four-year Electrical and Electronics Engineering degree.

The website must prioritize real mathematical calculations, scientifically correct physics, working circuit connections, and honest simulation results. Do not create fake or random simulation outputs.

TECHNOLOGY:

- React and TypeScript.
- A professional responsive interface.
- Modular, maintainable code.
- A real circuit simulation engine such as ngspice, integrated through a suitable backend or simulation service.
- A separate physics simulation module for mechanical systems and airflow.
- Automated tests for mathematical calculations and supported simulations.

1. CIRCUIT DESIGN WORKSPACE
   Create a drag-and-drop circuit editor where users can:

- Place electrical components.
- Connect component terminals using wires.
- Rotate, move, delete, and configure components.
- Change component ratings and electrical values.
- Connect batteries, sources, motors, switches, resistors, capacitors, and other components.
- Run, pause, and stop supported simulations.
- Inspect voltages, currents, power, energy, and waveforms.
- Save, load, and export circuit designs.
- View wiring errors, solver errors, and unsupported component warnings.

2. FOUR-YEAR ENGINEERING COMPONENT LIBRARY

Include components and models relevant to a four-year Electrical and Electronics Engineering curriculum.

BASIC ELECTRICAL ENGINEERING:
Resistors, potentiometers, capacitors, inductors, DC sources, AC sources, current sources, switches, wires, grounds, fuses, and circuit breakers.

SEMICONDUCTORS:
PN diodes, Zener diodes, LEDs, photodiodes, BJTs, JFETs, MOSFETs, SCRs, TRIACs, DIACs, IGBTs, and rectifiers.

ANALOG ELECTRONICS:
Operational amplifiers, comparators, oscillators, voltage regulators, filters, amplifiers, and signal generators.

DIGITAL ELECTRONICS:
Logic gates, multiplexers, demultiplexers, encoders, decoders, flip-flops, counters, registers, timers, ADCs, and DACs.

POWER ELECTRONICS:
Buck converters, boost converters, buck-boost converters, inverters, rectifiers, choppers, and PWM controllers.

ELECTRICAL MACHINES:
DC motors, DC generators, induction motors, synchronous motors, stepper motors, servo motors, universal motors, transformers, relays, solenoids, and alternators.

POWER SYSTEMS:
Transmission lines, distribution systems, transformers, generators, loads, circuit breakers, protective relays, and grounding systems.

CONTROL SYSTEMS:
PID controllers, transfer functions, feedback systems, sensors, actuators, and block-diagram models.

ENERGY SYSTEMS:
Solar panels, battery models, battery-management concepts, wind turbines, generators, charge controllers, and energy-storage systems.

MEASUREMENTS:
Voltmeter, ammeter, multimeter, oscilloscope, wattmeter, frequency meter, power analyzer, and current probes.

MICROCONTROLLERS:
Educational Arduino-style boards, digital input/output, PWM, sensor interfaces, and supported embedded-code simulation.

Show each component's symbol, terminals, parameters, SI units, ratings, equations, and simulation support status.

Do not claim every component is simulated unless its model is implemented and tested.

3. STRONG PHYSICS ENGINE

Implement scientifically appropriate models for:

- Electrical fields and potential.
- Current and charge.
- Electromagnetic induction.
- Magnetic fields and inductance.
- Electromagnetic torque.
- Mechanical rotational motion.
- Heat generation and temperature effects where supported.
- AC and DC circuits.
- Energy conversion and conservation.
- Mechanical loads and friction.
- Airflow forces and wind energy.

Use established equations and numerical methods. Clearly identify approximations and model limitations.

4. MATHEMATICS ENGINE

Provide:

- Algebra and equation solving.
- Differential equations.
- Complex-number calculations.
- Matrices and linear systems.
- Numerical methods.
- Phasor analysis.
- Fourier analysis.
- Laplace transforms.
- Transfer functions.
- Circuit nodal analysis.
- Mesh analysis.
- Kirchhoff's laws.
- Power and energy calculations.
- RMS and average values.
- Error estimation and numerical convergence checks.

Display calculations step by step, including units and the equations used.

5. REAL CIRCUIT SIMULATION

Use an established simulation engine such as ngspice for supported electronic circuits.

The application must:

- Build a real netlist from the user's circuit.
- Validate component connections.
- Run the solver.
- Display actual calculated results.
- Report numerical errors and convergence failures.
- Compare simple circuits against analytical solutions.
- Never invent or randomize scientific results.

If a component cannot be simulated, explain why and label it unsupported.

6. MOTOR LABORATORY

Provide interactive motor models for supported DC motors, induction motors, stepper motors, servo motors, and generators.

Allow users to configure:

- Supply voltage.
- Motor resistance and inductance.
- Back EMF parameters.
- Mechanical load.
- Friction.
- Motor speed.
- Torque.
- Current.
- Power.
- Direction of rotation.

Calculate results using the appropriate mathematical model.

For DC motor models, include the relationships:

V = IR + L(dI/dt) + Keω

T = KtI

J(dω/dt) = T - Tload - Bω

Clearly define the symbols and units, and use parameters appropriate to the selected motor.

7. ADJUSTABLE AIRFLOW AND WIND SIMULATOR

Create a separate interactive wind and airflow laboratory.

Provide an adjustable airflow control slider from 0 to 100 percent, mapped to a clearly defined airflow velocity range.

Users must be able to:

- Increase incoming airflow.
- Decrease incoming airflow.
- Reverse the airflow direction in supported models.
- Adjust the fan or turbine position.
- Change rotor diameter.
- Change blade pitch where supported.
- Adjust mechanical load.
- Start and stop the simulation.
- Observe rotor speed and rotational direction.
- Observe torque, electrical output, and efficiency where applicable.
- View airflow velocity and power graphs.

For wind turbine models, use:

Pwind = 0.5 × ρ × A × v³

Pavailable = 0.5 × ρ × A × v³

Pmechanical = Cp × Pavailable

P_electrical = η × P_mechanical

Define air density, swept area, wind speed, power coefficient, and conversion efficiency.

Do not allow generated power to exceed the available energy under the model assumptions.

IMPORTANT DISTINCTION:
A wind turbine extracts energy from airflow, whereas a fan consumes electrical energy to create airflow. Model these systems separately.

If using simplified airflow visualization, label it as an educational approximation. Do not claim computational fluid dynamics accuracy without an actual validated CFD solver.

8. INTERACTIVE PHYSICS VISUALIZATION

Show animations and graphs for:

- Motor rotation.
- Fan airflow direction.
- Wind turbine rotation.
- Voltage and current waveforms.
- Magnetic field illustrations where appropriate.
- Energy conversion.
- Changes in speed and load.

Keep visualization separate from numerical simulation so that animations cannot fabricate physical results.

9. AI ENGINEERING TUTOR

Add an AI assistant that:

- Explains engineering concepts.
- Solves mathematical problems step by step.
- Helps diagnose circuit errors.
- Suggests component values.
- Explains why a motor is not rotating.
- Explains how airflow affects wind turbine power.
- Answers questions about undergraduate electrical engineering.
- Distinguishes verified calculations from approximate explanations.

If an external AI API is required, use secure backend integration and explain whether it requires a paid API key.

10. FOUR-YEAR LEARNING CURRICULUM

Organize learning content into four academic years:

Year 1:
Basic electrical engineering, physics, mathematics, circuit fundamentals, and introductory programming.

Year 2:
Analog electronics, digital electronics, electrical machines, signals and systems, and measurements.

Year 3:
Power electronics, control systems, power systems, microcontrollers, and electrical machine modeling.

Year 4:
Renewable energy, advanced control, power-system analysis, electric drives, engineering projects, and research-oriented simulations.

Include practical exercises, solved examples, circuit projects, and quizzes. Explain that exact course content varies by university.

11. TESTING AND VALIDATION

Create automated tests for:

- Ohm's law.
- Kirchhoff's laws.
- RC and RL circuits.
- DC motor equations.
- AC power calculations.
- Wind power equations.
- Unit conversions.
- Energy conservation.
- Numerical solver errors.

Test the airflow slider at minimum, intermediate, and maximum values.

Verify that changing airflow changes the calculated wind turbine behavior according to the model.

12. SAFETY AND QUALITY

- Clearly identify unsafe voltages and currents.
- Include suitable electrical ratings and protection guidance.
- Never describe simulation as proof of real-world hardware safety.
- Keep all calculations reproducible.
- Never show fabricated simulation outputs.
- Include a visible list of implemented and unimplemented components.
- Do not expose API keys or private credentials.

13. DEVELOPMENT STRATEGY

First build a working foundation with:

- Circuit editor.
- Resistors and sources.
- Real DC circuit simulation.
- Measurement instruments.
- DC motor model.
- Adjustable airflow and wind turbine model.
- Physics and mathematics panel.
- Automated tests.

Then progressively add advanced electronics, electrical machines, power systems, microcontrollers, and the complete four-year curriculum.

Deliver the source code, dependency files, setup instructions, tests, and documentation.

Build a working, testable foundation before attempting the complete engineering platform.

Start fresh from this prompt

Builds a brand new app from the first prompt only, so later changes to the original are not included.