Update transformer.html

transformer.html

@@ -39,11 +39,11 @@
                 </div>
                 <div class="sliders">
                     <label for="primary_turns_slider">Np:</label>
-                    <input type="range" id="primary_turns_slider" min="0.0" max="1.0" value="0.15" step="0.005">
+                    <input type="range" id="primary_turns_slider" min="0.0" max="1.0" value="0.020" step="0.005">
                 </div>
                 <div class="sliders">
                     <label for="secondary_turns_slider">Ns:</label>
-                    <input type="range" id="secondary_turns_slider" min="0.0" max="1.0" value="0.15" step="0.005">
+                    <input type="range" id="secondary_turns_slider" min="0.0" max="1.0" value="0.20" step="0.005">
                 </div>
                 <div class="sliders">
                     <label for="power_slider">P:</label>
@@ -51,7 +51,7 @@
                 </div>
                 <div class="sliders">
                     <label for="load_impedance_slider">Zl:</label>
-                    <input type="range" id="load_impedance_slider" min="5.0" max="5000.0" value="50.0" step="5.0">
+                    <input type="range" id="load_impedance_slider" min="0.0" max="3.0" value="1.0" step="0.05">
                 </div>
             </div>
             <div id="notes" class="notes">
@@ -60,24 +60,22 @@
             <b><u>Notes:</u></b><br>
             The VK3CPU RF Transformer Calculator was developed to help users predict the RF characteristics of a ferrite toroid wound as a transformer. 
             It uses the manufacturer's (Fair-Rite) published data including the toroid's dimensions and complex permeability characteristics
-            to predict the component's characteristics.<br>
+            to predict the transformer's characteristics.<br>
             The calculator has 3 separate display areas. At the top is the chart display for showing frequency-dependent characteristics. Next is the
             schematic display, where a scaled image of the toroid and windings is presented to help with intuitive design. Next is the control panel
-            section, where the user can select the application type, toroid material, toroid size, wire size, number of windings and excitation voltage.<br><br>
+            section, where the user can select the wire size, toroid material, toroid size, number of primary and secondary windings, input power and load impedance.<br><br>
             <b><u>Inputs via the select widgets:</u></b>
             <ul> 
-                <li>Application : Selects the intended use of the toroid, either Inductor or Suppressor is currently supported. This limits the material selection as appropriate.</li>
                 <li>Size : Selects the size of the toroid. FT240 is 2.4" in diameter. FT80 is 0.8", etc...</li>
-                <li>Material : Manufacturers material mix code. Inductor mode shows initial permeability [&#956;i] in square brackets. (Pick lower &#956;i for higher frequency applications.) 
-                Suppressor mode displays effective suppression frequency range in square brackets.</li>
+                <li>Material : Manufacturers material mix code. Select this first. Initial permeability [&#956;i] is displayed in square brackets. (Pick lower &#956;i for higher frequency applications.) </li>
             </ul>
             <b><u>Inputs via the slider widgets:</u></b>
             <ul> 
                 <li>AWG : Select the wire gauge. Sliding L-R changes AWG from 40-0. (Defaults to 20 AWG)</li>
-                <li>N  : Winding density at the toroid inner-diameter. Controls how many single-layer turns can be achieved around the core. 
-                Maximum (100%, slider to hard-right) is reached when the turns are adjacent at the toroid's inner radius. (Defaults to 15%)</li>
-                <li>Vrms : The RMS voltage applied to the inductor (Volts). Determines the flux-density (B) and field-intensity (H) within the ferrite toroid. (Defaults to 10Vrms)</li>
-                <li>f : Shifts the frequency of interest of the chart display from left-to-right. Left towards kHz, right towards GHz. </li>
+                <li>Np  : Number of turns for the primary Winding. (Defaults to 20 turns.)</li>
+                <li>Ns  : Number of turns for the secondary Winding. (Defaults to 20 turns.) </li>
+                <li>P : The input power in watts. (Defaults to 100 W)</li>
+                <li>Zl : Load impedance in ohms. (Defaults to 50 ohms.) </li>
             </ul>
             <i>Note: Manufacturers recommend keeping the number of turns (N) to a minimum.</i><br><br>
             <b><u>Chart display:</u></b>
@@ -730,7 +728,7 @@
                     //const Ls = mu[0] * 4.0 * Math.PI * this.Np**2 / this.core.CC;
                     const Xp = (Rs**2 + Xs**2) / Xs;                // Get parallel equivalent reactance
                     const Rp = (Rs**2 + Xs**2) / Rs;                // Get parallel equivalent resistance 
-                    const Cd = 1e-10 + (0.9 + (78.1/this.Np**2))*1e-12;
+                    const Cd = (0.9 + (78.1/this.Np**2))*1e-12;
                     const Rl = this.Zl*(this.Np/this.Ns)**2;        // Load impedance reflected to primary side in ohms
 
                     const w = 2 * Math.PI * frequency;
@@ -807,7 +805,7 @@
                     this.Pin = 10.0 ** power_slider.value;
                     this.Z0 = 50.0;
                     this.Vrms = Math.sqrt(this.Pin * this.Z0);
-                    this.Zl = 1.0 * load_impedance_slider.value; 
+                    this.Zl = 5.0 * 10.0**load_impedance_slider.value; 
 
                     // Frequency independent characteristics:
                     this.N_max = Math.PI / (Math.atan2(0.5e3 * this.cond_diameter_meters, (0.5 * this.core.B - 0.5e3 * this.cond_diameter_meters)));
@@ -2698,7 +2696,8 @@
             function drawTransformer(fctx, originX, originY, outerRadius, innerRadius, wireRadius, pturns, sturns, width, toroid_colour) {
                 let theta = Math.atan2((2*wireRadius), innerRadius - wireRadius);
                 
-                var front_originX = originX - 0.5*(1*outerRadius + 20 + width) - 10;
+                //var front_originX = originX - 0.5*(1*outerRadius + 20 + width) - 10;
+                var front_originX = originX;
                 originY -= 12;
 
                 // Draw front profile of toroid former:
@@ -2711,7 +2710,7 @@
                 fctx.lineWidth = 1.0;
                 
                 // Draw side profile of toroid:
-                var side_originX = front_originX + outerRadius + 20;
+                var side_originX = front_originX + outerRadius + 10;
                 fctx.fillStyle = "#6F6F6F"; // rgb(100, 100, 100);
                 fctx.fillRect(side_originX, originY - outerRadius, width, (outerRadius - innerRadius));
                 fctx.fillRect(side_originX, originY + innerRadius, width, (outerRadius - innerRadius));
@@ -2800,7 +2799,7 @@
                 // Draw the Dimensions:
                 fctx.strokeStyle = "black"; 
                 fctx.lineWidth = 1;
-                var localx = front_originX - outerRadius - 10;
+                var localx = front_originX - outerRadius - 20;
                 fctx.beginPath();
                 fctx.moveTo(localx + 10, originY - outerRadius);
                 fctx.lineTo(localx, originY - outerRadius);
@@ -2819,7 +2818,7 @@
                 fctx.fillText("(" + (controller.toroid.core.A*0.03937).toFixed(3) + "\")", 0, -6);
                 fctx.restore();
                 
-                localx = front_originX + outerRadius + 20 + width + 15;
+                localx = front_originX + outerRadius + 10 + width + 15;
                 fctx.beginPath();
                 fctx.moveTo(localx - 5, originY - innerRadius);
                 fctx.lineTo(localx, originY - innerRadius);