Simulatore di Circuiti AC by @fammattera - Codewith.it

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<!DOCTYPE html>
<html lang="it">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Simulatore di Circuiti AC</title>
    <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
    <script src="https://cdn.tailwindcss.com"></script>
    <style>
        body { background-color: #f8fafc; font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
        .card { background: white; border-radius: 12px; box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1); padding: 1.5rem; margin-bottom: 1rem; }
        .math-box { font-family: 'Courier New', Courier, monospace; color: #1e293b; background: #f1f5f9; padding: 1rem; border-left: 4px solid #3b82f6; }
        /* Altezza maggiorata per il grafico */
        .chart-container { position: relative; height: 500px; width: 100%; }
        canvas { width: 100% !important; height: 100% !important; }
    </style>
</head>
<body class="p-4 md:p-8">

    <div class="max-w-7xl mx-auto">
        <header class="mb-8 text-center">
            <h1 class="text-4xl font-bold text-slate-800">Simulatore Interattivo di Circuiti AC</h1>
            <p class="text-slate-600 mt-2 text-lg">Analisi avanzata e visualizzazione delle grandezze elettriche</p>
        </header>

        <div class="grid grid-cols-1 lg:grid-cols-12 gap-6">
            
            <!-- Colonna Sinistra: Input e Formule (4/12) -->
            <div class="lg:col-span-4 space-y-6">
                <!-- Parametri -->
                <div class="card">
                    <h2 class="text-xl font-semibold mb-4 flex items-center gap-2">
                        <span>⚙️</span> Parametri
                    </h2>
                    <div class="space-y-4">
                        <div>
                            <label class="block text-sm font-medium text-slate-700">Tipo di Circuito</label>
                            <select id="circuitType" class="mt-1 block w-full rounded-md border-gray-300 shadow-sm p-2 bg-slate-50 border">
                                <option value="R">Puramente Resistivo (R)</option>
                                <option value="L">Puramente Induttivo (L)</option>
                                <option value="C">Puramente Capacitivo (C)</option>
                                <option value="RL">Serie RL</option>
                                <option value="RC">Serie RC</option>
                                <option value="RLC" selected>Serie RLC</option>
                            </select>
                        </div>
                        <div class="grid grid-cols-1 gap-4">
                            <div>
                                <label class="flex justify-between text-sm font-medium text-slate-700">
                                    V_picco (V) <span id="vPeakVal" class="text-blue-600">100 V</span>
                                </label>
                                <input type="range" id="vPeak" min="10" max="400" value="100" class="w-full">
                            </div>
                            <div>
                                <label class="flex justify-between text-sm font-medium text-slate-700">
                                    Frequenza (Hz) <span id="freqVal" class="text-blue-600">50 Hz</span>
                                </label>
                                <input type="range" id="freq" min="1" max="200" value="50" class="w-full">
                            </div>
                            <div id="rowR">
                                <label class="flex justify-between text-sm font-medium text-slate-700">
                                    Resistenza (Ω) <span id="resVal" class="text-blue-600">100 Ω</span>
                                </label>
                                <input type="range" id="res" min="1" max="1000" value="100" class="w-full">
                            </div>
                            <div id="rowL">
                                <label class="flex justify-between text-sm font-medium text-slate-700">
                                    Induttanza (mH) <span id="indVal" class="text-blue-600">200 mH</span>
                                </label>
                                <input type="range" id="ind" min="1" max="1000" value="200" class="w-full">
                            </div>
                            <div id="rowC">
                                <label class="flex justify-between text-sm font-medium text-slate-700">
                                    Capacità (µF) <span id="capVal" class="text-blue-600">50 µF</span>
                                </label>
                                <input type="range" id="cap" min="1" max="1000" value="50" class="w-full">
                            </div>
                        </div>
                    </div>
                </div>

                <!-- Formule -->
                <div class="card">
                    <h2 class="text-xl font-semibold mb-4 text-slate-800">? Formule e Valori</h2>
                    <div id="formulaBox" class="math-box text-sm space-y-2 overflow-x-auto">
                        <!-- JS content -->
                    </div>
                </div>
            </div>

            <!-- Colonna Destra: Schema e Grafico (8/12) -->
            <div class="lg:col-span-8 space-y-6">
                <!-- Schema del Circuito -->
                <div class="card">
                    <h2 class="text-xl font-semibold mb-2">?️ Schema Circuitale</h2>
                    <div id="circuitDiagram" class="flex justify-center items-center bg-slate-50 border rounded-lg h-40">
                        <!-- SVG dinamico -->
                    </div>
                </div>

                <!-- Grafico Ampio -->
                <div class="card">
                    <div class="flex justify-between items-center mb-4">
                        <h2 class="text-xl font-semibold">? Andamento Temporale delle Grandezze</h2>
                        <span class="text-xs bg-slate-100 px-2 py-1 rounded text-slate-500 italic">Asse Y doppio per risoluzione elevata</span>
                    </div>
                    <div class="chart-container">
                        <canvas id="acChart"></canvas>
                    </div>
                    <div class="mt-4 grid grid-cols-3 gap-2 text-center text-[11px] font-medium uppercase tracking-wider">
                        <div class="text-red-600 border-t-2 border-red-600 pt-1">Tensione [V]</div>
                        <div class="text-blue-600 border-t-2 border-blue-600 pt-1">Corrente [A]</div>
                        <div class="text-emerald-600 border-t-2 border-emerald-600 pt-1">Carica [mC]</div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <script>
        let chart;
        const ctx = document.getElementById('acChart').getContext('2d');
        const inputs = ['vPeak', 'freq', 'res', 'ind', 'cap', 'circuitType'];
        const elements = {};
        inputs.forEach(id => elements[id] = document.getElementById(id));

        function initChart() {
            chart = new Chart(ctx, {
                type: 'line',
                data: {
                    labels: [],
                    datasets: [
                        {
                            label: 'Tensione v(t) [V]',
                            borderColor: '#ef4444',
                            backgroundColor: 'rgba(239, 68, 68, 0.05)',
                            borderWidth: 3,
                            data: [],
                            pointRadius: 0,
                            fill: true,
                            yAxisID: 'y'
                        },
                        {
                            label: 'Corrente i(t) [A]',
                            borderColor: '#3b82f6',
                            borderWidth: 3,
                            data: [],
                            pointRadius: 0,
                            fill: false,
                            yAxisID: 'y1'
                        },
                        {
                            label: 'Carica q(t) [mC]',
                            borderColor: '#10b981',
                            borderWidth: 2,
                            borderDash: [5, 5],
                            data: [],
                            pointRadius: 0,
                            fill: false,
                            yAxisID: 'y1'
                        }
                    ]
                },
                options: {
                    responsive: true,
                    maintainAspectRatio: false,
                    animation: false,
                    interaction: { mode: 'index', intersect: false },
                    scales: {
                        x: { 
                            display: true, 
                            title: { display: true, text: 'Tempo [s]', font: { weight: 'bold' } },
                            grid: { color: '#e2e8f0' }
                        },
                        y: { 
                            type: 'linear',
                            display: true,
                            position: 'left',
                            title: { display: true, text: 'Tensione [Volt]', color: '#ef4444', font: { weight: 'bold' } },
                            grid: { color: '#e2e8f0' }
                        },
                        y1: {
                            type: 'linear',
                            display: true,
                            position: 'right',
                            title: { display: true, text: 'Corrente [A] / Carica [mC]', color: '#3b82f6', font: { weight: 'bold' } },
                            grid: { drawOnChartArea: false }
                        }
                    },
                    plugins: {
                        legend: { display: false } // Usiamo la legenda custom sotto il grafico
                    }
                }
            });
        }

        function updateUI() {
            const type = elements.circuitType.value;
            document.getElementById('rowR').style.display = type.includes('R') ? 'block' : 'none';
            document.getElementById('rowL').style.display = type.includes('L') ? 'block' : 'none';
            document.getElementById('rowC').style.display = type.includes('C') ? 'block' : 'none';

            document.getElementById('vPeakVal').innerText = elements.vPeak.value + " V";
            document.getElementById('freqVal').innerText = elements.freq.value + " Hz";
            document.getElementById('resVal').innerText = elements.res.value + " Ω";
            document.getElementById('indVal').innerText = elements.ind.value + " mH";
            document.getElementById('capVal').innerText = elements.cap.value + " µF";

            calculatePhysics();
            drawCircuit();
        }

        function calculatePhysics() {
            const Vp = parseFloat(elements.vPeak.value);
            const f = parseFloat(elements.freq.value);
            const R = elements.circuitType.value.includes('R') ? parseFloat(elements.res.value) : 0;
            const L = elements.circuitType.value.includes('L') ? parseFloat(elements.ind.value) / 1000 : 0;
            const C = elements.circuitType.value.includes('C') ? parseFloat(elements.cap.value) / 1000000 : Infinity;
            const type = elements.circuitType.value;

            const omega = 2 * Math.PI * f;
            const XL = omega * L;
            const XC = (C === Infinity) ? 0 : 1 / (omega * C);
            
            let X = 0;
            if (type === 'L') X = XL;
            else if (type === 'C') X = -XC;
            else if (type.includes('L') || type.includes('C')) X = XL - XC;

            const Z = Math.sqrt(R**2 + X**2);
            const phi = Math.atan2(X, R);
            const Ip = Vp / Z;

            let formulaHTML = `<div class="font-bold text-blue-800">Parametri Reattivi:</div>`;
            formulaHTML += `<div>ω = ${omega.toFixed(1)} rad/s | Z = ${Z.toFixed(2)} Ω</div>`;
            if (type.includes('L')) formulaHTML += `<div>X_L = ${XL.toFixed(2)} Ω</div>`;
            if (type.includes('C')) formulaHTML += `<div>X_C = ${XC.toFixed(2)} Ω</div>`;
            
            formulaHTML += `<div class="mt-3 font-bold text-blue-800">Equazioni Temporali:</div>`;
            formulaHTML += `<div>v(t) = ${Vp} · sin(${omega.toFixed(1)}t)</div>`;
            formulaHTML += `<div>i(t) = ${Ip.toFixed(3)} · sin(${omega.toFixed(1)}t - ${(phi).toFixed(2)})</div>`;
            
            if (type === 'RC' || type === 'C' || type === 'RLC') {
                const Qp = Ip / omega; 
                formulaHTML += `<div class="text-emerald-600 font-bold mt-2">q(t) = ${(Qp*1000).toFixed(3)} · cos(${omega.toFixed(1)}t - ${phi.toFixed(2)}) [mC]</div>`;
            }
            document.getElementById('formulaBox').innerHTML = formulaHTML;

            const labels = [];
            const dataV = [];
            const dataI = [];
            const dataQ = [];
            const T = 1 / f;
            const periods = 2.5;
            const steps = 300;

            const showQ = (type === 'RC' || type === 'C' || type === 'RLC');
            chart.setDatasetVisibility(2, showQ);

            for (let i = 0; i <= steps; i++) {
                const t = (i / steps) * T * periods;
                const v_t = Vp * Math.sin(omega * t);
                const i_t = Ip * Math.sin(omega * t - phi);
                const q_t = - (Ip / omega) * Math.cos(omega * t - phi);
                
                labels.push(t.toFixed(4));
                dataV.push(v_t);
                dataI.push(i_t);
                dataQ.push(q_t * 1000); // In milliCoulomb per scala Y1
            }

            chart.data.labels = labels;
            chart.data.datasets[0].data = dataV;
            chart.data.datasets[1].data = dataI;
            chart.data.datasets[2].data = dataQ;
            chart.update();
        }

        function drawCircuit() {
            const type = elements.circuitType.value;
            let svg = `<svg viewBox="0 0 400 150" width="100%" height="100%">
                <circle cx="50" cy="75" r="20" fill="none" stroke="#475569" stroke-width="2"/>
                <path d="M 40 75 Q 45 65 50 75 T 60 75" fill="none" stroke="#475569" stroke-width="2"/>
                <line x1="50" y1="55" x2="50" y2="20" stroke="black" stroke-width="2"/>
                <line x1="50" y1="95" x2="50" y2="130" stroke="black" stroke-width="2"/>
                <line x1="50" y1="20" x2="100" y2="20" stroke="black" stroke-width="2"/>
                <line x1="50" y1="130" x2="350" y2="130" stroke="black" stroke-width="2"/>
                <line x1="350" y1="130" x2="350" y2="20" stroke="black" stroke-width="2"/>
            `;
            const parts = [];
            if(type.includes('R')) parts.push('R');
            if(type.includes('L')) parts.push('L');
            if(type.includes('C')) parts.push('C');
            const startX = 100, endX = 350;
            const segmentWidth = (endX - startX) / parts.length;
            parts.forEach((p, i) => {
                const x = startX + (i * segmentWidth);
                const midX = x + segmentWidth / 2;
                svg += `<line x1="${x}" y1="20" x2="${midX - 20}" y2="20" stroke="black" stroke-width="2"/>`;
                if (p === 'R') {
                    svg += `<path d="M ${midX-20} 20 L ${midX-15} 10 L ${midX-5} 30 L ${midX+5} 10 L ${midX+15} 30 L ${midX+20} 20" fill="none" stroke="#ef4444" stroke-width="2"/>`;
                } else if (p === 'L') {
                    svg += `<path d="M ${midX-20} 20 Q ${midX-15} 5 ${midX-10} 20 Q ${midX-5} 5 ${midX} 20 Q ${midX+5} 5 ${midX+10} 20 Q ${midX+15} 5 ${midX+20} 20" fill="none" stroke="#3b82f6" stroke-width="2"/>`;
                } else if (p === 'C') {
                    svg += `<line x1="${midX-5}" y1="5" x2="${midX-5}" y2="35" stroke="#10b981" stroke-width="3"/>`;
                    svg += `<line x1="${midX+5}" y1="5" x2="${midX+5}" y2="35" stroke="#10b981" stroke-width="3"/>`;
                }
                svg += `<line x1="${midX + 20}" y1="20" x2="${x + segmentWidth}" y2="20" stroke="black" stroke-width="2"/>`;
            });
            svg += `</svg>`;
            document.getElementById('circuitDiagram').innerHTML = svg;
        }

        inputs.forEach(id => elements[id].addEventListener('input', updateUI));
        window.onload = () => { initChart(); updateUI(); };
    </script>
</body>
</html>