diff --git a/transformer.html b/transformer.html index 4e3fbd3..aa10dc9 100644 --- a/transformer.html +++ b/transformer.html @@ -7,7 +7,7 @@ -
Miguel VK3CPU - RF Transformer Calc v0.1
+
VK3CPU - RF Transformer Calc v0.1
@@ -79,7 +79,7 @@
  • Np : Number of turns for the primary Winding. (Defaults to 20 turns.)
  • Ns : Number of turns for the secondary Winding. (Defaults to 20 turns.)
  • P : The input power in watts. (Defaults to 100 W)
    • -
  • Zl : Load impedance in ohms. (Defaults to 50 ohms.)
    • +
  • Zl : Load impedance in ohms. (Defaults to 2550 ohms.)
  • Cin : Additional primary capacitance 0 - 200 pF. (Defaults to 0 pF.)
    • Note: Manufacturers recommend keeping the number of turns (N) to a minimum.

    @@ -773,7 +773,7 @@ let Z2 = math.complex(R2, w*L2); let ZCp = math.complex(0.0, -1.0/(w*Cp)); let Zp = math.complex(Rp, Xp); - //let ZRp = math.complex(Rp, 0.0); + //let ZRp = math.complex(Rp, 0.0); //let ZLp = math.complex(0.0, Xp); //let Zp = math.divide(math.multiply(ZRp, ZLp), math.add(ZRp, ZLp)); let ZCs = math.complex(0.0, -1.0/(w*Cs)); @@ -794,9 +794,20 @@ let Z33 = math.add(math.unaryMinus(math.inv(Z2)), math.unaryMinus(math.inv(Zlc)), math.unaryMinus(math.inv(ZCc))); let ZZZ = math.matrix([[Z11, Z12, Z13], [Z21, Z22, Z23], [Z31, Z32, Z33]]); - let vvv = math.matrix([[2*this.Vrms/Z0], [zero], [zero]]); + let vvv = math.matrix([[this.Vrms/Z0], [zero], [zero]]); let VVV = math.multiply(math.inv(ZZZ), vvv); - return [VVV.get([0,0]), VVV.get([1,0]), VVV.get([2,0])]; + + // Power dissipated in Z0: + //let PZ0 = math.divide(math.square(math.subtract(this.Vrms, VVV.get([0,0]))), Z0); + let PZ0 = math.subtract(this.Vrms, VVV.get([0,0])).toPolar().r**2 / Z0; + // Power dissipated in Rc: + let PRp = math.divide(math.square(VVV.get([1,0])), Rp); // Check this! + // Power dissipated in Zl: + let PZl = math.divide(math.square(VVV.get([2,0])), Zl); + + // SWR: Calculate equivalent impedance of circuit as-seen from the source. Then use gamma eqn, followed by VSWR eqn: + + return [VVV.get([0,0]), VVV.get([1,0]), VVV.get([2,0]), PZ0, PRp, PZl]; }; this.recalculate = function (frequencies) { @@ -889,14 +900,14 @@ //this.L_vs_f.push({x:freq, y:(mu[0] * 4.0 * Math.PI * this.N**2 * 1e-3 / this.core.CC)}); this.L_vs_f.push({x:freq, y:L*1e6}); // Convert H to uH this.M_vs_f.push({x:freq, y:M*1e6}); // Convert H to uH - + this.SWR_vs_f.push({x:freq, y:SWR}); this.eff_vs_f.push({x:freq, y:100.0 * eff}); //const IL = 20.0 * Math.log10(VVV[0]/VVV[3]); //this.IL_vs_f.push({x:freq, y:IL}); - const P0 = this.Vrms**2 / this.Z0; // (VVV[0].toPolar().r**2 / this.Z0); - const Pl = (VVV[2].toPolar().r**2 / (this.Zl*((this.Np/this.Ns)**2))); + const P0 = VVV[3]; //this.Vrms**2 / this.Z0; // (VVV[0].toPolar().r**2 / this.Z0); + const Pl = VVV[5].toPolar().r; //(VVV[2].toPolar().r**2 / (this.Zl*((this.Np/this.Ns)**2))); this.P0_vs_f.push({x:freq, y:P0}); this.Pl_vs_f.push({x:freq, y:Pl}); const IL = 10.0 * Math.log10(P0/Pl); @@ -2015,6 +2026,13 @@ // Draw the primary-side capacitor: x1 -= 35; fctx.lineTo(x1, y1); + fctx.stroke(); + + fctx.strokeStyle = "black"; + fctx.lineWidth = 1; + fctx.beginPath(); + fctx.moveTo(x1, y1); + fctx.lineTo(x1, y1); fctx.lineTo(x1, originY - 3); fctx.moveTo(x1 - 10, originY - 3); fctx.lineTo(x1 + 10, originY - 3); @@ -2022,6 +2040,13 @@ fctx.lineTo(x1 + 10, originY + 3); fctx.moveTo(x1, originY + 3); fctx.lineTo(x1, originY + outerRadius + 10); + fctx.stroke(); + //fctx.restore(); + fctx.lineCap = "round"; + fctx.strokeStyle = "blue"; + fctx.lineWidth = 2 * wireRadius; + fctx.beginPath(); + fctx.moveTo(x1, originY + outerRadius + 10); x1 += 35; fctx.lineTo(x1, originY + outerRadius + 10); fctx.stroke(); @@ -2046,7 +2071,8 @@ } // Right-hand exit wires: //x1 = side_originX + outerRadius; - x1 = side_originX + 80; + const x_res = side_originX + width + 60; + x1 = x_res; //x1 += 5; y1 = originY - outerRadius - 10; x2 += 5; @@ -2068,22 +2094,22 @@ // Draw the load resistor: fctx.lineWidth = 1; - fctx.strokeRect(side_originX + 80 -8, originY - 20, 16, 40); + fctx.strokeRect(x_res -8, originY - 20, 16, 40); fctx.beginPath(); - fctx.moveTo(side_originX + 80, y2); - fctx.lineTo(side_originX + 80, originY+20); - fctx.moveTo(side_originX + 80, y1); - fctx.lineTo(side_originX + 80, originY-20); + fctx.moveTo(x_res, y2); + fctx.lineTo(x_res, originY+20); + fctx.moveTo(x_res, y1); + fctx.lineTo(x_res, originY-20); fctx.stroke(); //fctx.textAlign = "right"; fctx.font = "12px arial"; fctx.textAlign = "center"; - fctx.fillText("Z\u2097", side_originX + 80, originY); + fctx.fillText("Z\u2097", x_res, originY); fctx.textAlign = "left"; var num = getMetricPrefix(controller.toroid.Zl); - fctx.fillText(num.val.toPrecision(3).toString() + ' ' + num.pfx + "\u03A9", side_originX + 95, originY); + fctx.fillText(num.val.toPrecision(3).toString() + ' ' + num.pfx + "\u03A9", x_res + 15, originY); // Draw the Dimensions: fctx.strokeStyle = "black";