kopia lustrzana https://github.com/miguelvaca/vk3cpu
Clean ups. Added Q and BW.
miguel
rodzic
82e40164f8
commit
4a40116ca7
140
magloop.html
140
magloop.html
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@ -94,44 +94,62 @@
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return retval;
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}
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function calculateRadiationResistance() {
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var retval = [];
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function radiationResistance(frequency) {
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const n_turns = loop_turns_slider.value;
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const k = 20.0 * (Math.PI ** 2.0);
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const wavelength = 3e8 / (frequency * 1e6);
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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const rr = (n_turns ** 2.0) * k * (l ** 4.0);
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return rr;
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}
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function calculateRadiationResistance() {
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var retval = [];
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frequencies.forEach(freq => {
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const wavelength = 3e8 / (freq * 1e6);
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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//const wavelength = 3e8 / (freq * 1e6);
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//const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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//if (l <= 0.25) {
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const rr = (n_turns ** 2.0) * k * (l ** 4.0);
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const rr = radiationResistance(freq);
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retval.push({x:freq, y:rr});
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//}
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});
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return retval;
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}
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function inductiveReactance(frequency) {
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const inductance = getInductance();
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const wavelength = 3e8 / (frequency * 1e6);
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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const reactance = 2.0 * Math.PI * (frequency * 1e6) * inductance;
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return reactance;
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}
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function calculateInductiveReactance() {
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var retval = [];
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const inductance = getInductance();
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frequencies.forEach(freq => {
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const wavelength = 3e8 / (freq * 1e6);
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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//const wavelength = 3e8 / (freq * 1e6);
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//const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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//if (l <= 0.25) {
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const reactance = 2.0 * Math.PI * (freq * 1e6) * inductance;
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retval.push({x:freq, y:reactance});
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const reactance = inductiveReactance(freq);
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retval.push({x:freq, y:reactance});
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//}
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});
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return retval;
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}
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function tuningCapacitance(frequency) {
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const inductance = getInductance();
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const wavelength = 3e8 / (frequency * 1e6);
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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const reactance = 2.0 * Math.PI * frequency * 1e6 * inductance;
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const capacitance = 1e12 / (2.0 * Math.PI * frequency * 1e6 * reactance);
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return capacitance;
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}
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function calculateTuningCapacitor() {
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var retval = [];
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const inductance = getInductance();
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frequencies.forEach(freq => {
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const wavelength = 3e8 / (freq * 1e6);
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const l = (Math.PI * loop_diameter_slider.value) / wavelength;
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//if (l <= 0.25) {
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const reactance = 2.0 * Math.PI * freq * 1e6 * inductance;
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const capacitor = 1e12 / (2.0 * Math.PI * freq * 1e6 * reactance);
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const capacitor = tuningCapacitance(freq);
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retval.push({x:freq, y:capacitor});
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//}
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});
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@ -152,6 +170,7 @@
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};
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function getProximityResFromSpacing(spacing_ratio) {
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// Use the proximityResistance look-up table and interpolate values depending on the spacing ratio and the number of turns.
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var retval = 0.0;
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const n_turns = loop_turns_slider.value;
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var i = 0;
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@ -165,45 +184,70 @@
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return retval;
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}
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function calculateLossResistance() {
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var retval = [];
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function lossResistance(frequency) {
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const a_coil_radius = loop_diameter_slider.value * 0.5;
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const b_conductor_radius = conductor_diameter_slider.value * 0.0005;
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const n_turns = loop_turns_slider.value;
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const loop_spacing_ratio = loop_spacing_slider.value;
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const mu0 = 4.0 * Math.PI * 1e-7;
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const k = (n_turns * a_coil_radius / b_conductor_radius);
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const cu_sigma = 58e6;
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const cu_sigma = 58e6; // Copper conductance value
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const Rp = getProximityResFromSpacing(loop_spacing_ratio);
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const Rs = Math.sqrt(Math.PI * frequency * 1e6 * mu0 / cu_sigma);
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const R0 = (n_turns * Rs) / (2.0 * Math.PI * b_conductor_radius);
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const R_ohmic = k * Rs * (Rp / R0 + 1.0);
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return R_ohmic;
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}
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function calculateLossResistance() {
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var retval = [];
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frequencies.forEach(freq => {
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const Rs = Math.sqrt(Math.PI * freq * 1e6 * mu0 / cu_sigma);
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const R0 = (n_turns * Rs) / (2.0 * Math.PI * b_conductor_radius);
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const R_ohmic = k * Rs * (Rp / R0 + 1.0);
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const R_ohmic = lossResistance(freq);
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retval.push({x:freq, y:R_ohmic});
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});
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return retval;
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}
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function calculateEfficiencyFactor() {
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const RL = calculateLossResistance();
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const RR = calculateRadiationResistance();
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var retval = [];
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for (let index = 0; index < RR.length; index++) {
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const Q = 1.0 / (1.0 + (RL[index].y / RR[index].y));
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retval.push({x:RL[index].x, y:Q});
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}
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frequencies.forEach(freq => {
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const R_ohmic = lossResistance(freq);
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const R_rad = radiationResistance(freq);
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const efficiency = 100.0 / (1.0 + (R_ohmic / R_rad));
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retval.push({x:freq, y:efficiency});
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});
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return retval;
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}
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function qualityFactor(frequency) {
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const Xl = inductiveReactance(frequency);
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const Rl = lossResistance(frequency);
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const Rr = radiationResistance(frequency);
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const Q = Xl / (Rl + Rr);
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return Q;
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}
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function calculateQualityFactor() {
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const Xl = calculateInductiveReactance();
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const Rl = calculateLossResistance();
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const Rr = calculateRadiationResistance();
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var retval = [];
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for (let index = 0; index < Xl.length; index++) {
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const Q = Xl[index].y / (Rl[index].y + Rr[index].y);
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retval.push({x:Xl[index].x, y:Q});
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}
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frequencies.forEach(freq => {
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const Q = qualityFactor(freq);
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retval.push({x:freq, y:Q});
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});
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return retval;
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}
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function bandwidth(frequency) {
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const Q = qualityFactor(frequency);
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const bw = frequency * 1e3 / Q; // in kiloHertz, remember that frequency comes in as MHz. Conversion between MHz and kHz is why the 1e3 exists.
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return bw;
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}
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function calculateBandwidth() {
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var retval = [];
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frequencies.forEach(freq => {
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const bw = bandwidth(freq);
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retval.push({x:freq, y:bw});
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});
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return retval;
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}
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@ -215,6 +259,7 @@
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myChart.data.datasets[3].data = calculateLossResistance();
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myChart.data.datasets[4].data = calculateEfficiencyFactor();
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myChart.data.datasets[5].data = calculateQualityFactor();
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myChart.data.datasets[6].data = calculateBandwidth();
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myChart.update();
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}
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@ -226,6 +271,7 @@
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myChart.data.datasets[3].data = calculateLossResistance();
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myChart.data.datasets[4].data = calculateEfficiencyFactor();
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myChart.data.datasets[5].data = calculateQualityFactor();
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myChart.data.datasets[6].data = calculateBandwidth();
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myChart.update();
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}
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@ -237,6 +283,7 @@
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myChart.data.datasets[3].data = calculateLossResistance();
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myChart.data.datasets[4].data = calculateEfficiencyFactor();
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myChart.data.datasets[5].data = calculateQualityFactor();
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myChart.data.datasets[6].data = calculateBandwidth();
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myChart.update();
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}
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@ -248,6 +295,7 @@
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myChart.data.datasets[3].data = calculateLossResistance();
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myChart.data.datasets[4].data = calculateEfficiencyFactor();
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myChart.data.datasets[5].data = calculateQualityFactor();
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myChart.data.datasets[6].data = calculateBandwidth();
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myChart.update();
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}
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@ -319,6 +367,15 @@
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data: calculateQualityFactor(),
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borderWidth: 1,
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yAxisID: 'qID'
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},
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{
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label: 'BW kHz',
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fill: false,
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borderColor: 'brown',
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backgroundColor: 'brown',
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data: calculateBandwidth(),
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borderWidth: 1,
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yAxisID: 'bwID'
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}]
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},
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options: {
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@ -337,7 +394,7 @@
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display: true,
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scaleLabel: {
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display: true,
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labelString: 'Ohms \u03A9',
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labelString: 'j\u03A9',
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fontColor: 'blue',
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fontStyle: 'bold'
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},
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@ -371,7 +428,7 @@
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display: true,
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scaleLabel: {
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display: true,
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labelString: 'Efficiency',
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labelString: 'Efficiency %',
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fontColor: 'black',
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fontStyle: 'bold'
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},
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@ -388,6 +445,17 @@
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},
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position: 'right',
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id: 'qID'
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},{
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type: 'linear',
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display: true,
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scaleLabel: {
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display: true,
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labelString: 'BW kHz',
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fontColor: 'brown',
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fontStyle: 'bold'
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},
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position: 'left',
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id: 'bwID'
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}]
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},
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showLines: true
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