Add next batch of calculators and AWG support

hdyc-svelte/src/lib/data/calculators.ts

@@ -1,5 +1,5 @@
 // THIS FILE IS AUTO-GENERATED BY migrate.py
-export type CalcType = 'standard' | 'inverse' | '3col' | '3col-mul' | 'base' | 'text-bin' | 'bin-text' | 'dms-dd' | 'dd-dms' | 'dec-frac' | 'db-int' | 'db-spl' | 'db-v' | 'db-w';
+export type CalcType = 'standard' | 'inverse' | '3col' | '3col-mul' | 'base' | 'text-bin' | 'bin-text' | 'dms-dd' | 'dd-dms' | 'dec-frac' | 'db-int' | 'db-spl' | 'db-v' | 'db-w' | 'awg' | 'brinell-rockwell';
 
 export interface CalculatorDef {
   slug: string;
@@ -1598,6 +1598,11 @@ export const calculators: CalculatorDef[] = [
   {"slug": "heat-transfer-coefficient-btu-per-hour-square-foot-f-to-w-per-square-meter-k", "name": "Heat transfer coefficient (BTU/(hr\u00b7ft\u00b2\u00b7\u00b0F)) to W/(m\u00b2\u00b7K)", "category": "energy", "type": "standard", "teaser": "Return imperial coefficients back into SI.", "labels": {"in1": "Heat transfer coefficient (BTU/(hr\u00b7ft\u00b2\u00b7\u00b0F))", "in2": "W/(m\u00b2\u00b7K)"}, "factor": 5.6782633415},
   {"slug": "heat-transfer-coefficient-w-per-square-meter-k-to-w-per-square-foot-f", "name": "Heat transfer coefficient (W/(m\u00b2\u00b7K)) to W/(ft\u00b2\u00b7\u00b0F)", "category": "energy", "type": "standard", "teaser": "Move the conduction coefficient into mixed-area and temperature units.", "labels": {"in1": "Heat transfer coefficient (W/(m\u00b2\u00b7K))", "in2": "W/(ft\u00b2\u00b7\u00b0F)"}, "factor": 0.0516128},
   {"slug": "heat-transfer-coefficient-w-per-square-foot-f-to-w-per-square-meter-k", "name": "Heat transfer coefficient (W/(ft\u00b2\u00b7\u00b0F)) to W/(m\u00b2\u00b7K)", "category": "energy", "type": "standard", "teaser": "Convert the mixed imperial SI coefficient back into its base units.", "labels": {"in1": "Heat transfer coefficient (W/(ft\u00b2\u00b7\u00b0F))", "in2": "W/(m\u00b2\u00b7K)"}, "factor": 19.3750387506},
+  {"slug": "awg-to-circular-mils", "name": "AWG to Circular mils", "category": "electrical", "type": "awg", "teaser": "Convert American Wire Gauge sizes into circular mil areas.", "labels": {"in1": "AWG", "in2": "Circular mils"}},
+  {"slug": "awg-to-millimeters-diameter", "name": "AWG to Millimeters (diameter)", "category": "electrical", "type": "awg", "teaser": "Express AWG gauge as a diameter in millimeters.", "labels": {"in1": "AWG", "in2": "Millimeters (diameter)"}},
+  {"slug": "awg-to-square-millimeters-cross-section", "name": "AWG to Square millimeters (cross-section)", "category": "electrical", "type": "awg", "teaser": "Convert AWG sizes into cross-sectional area in mm\u00b2.", "labels": {"in1": "AWG", "in2": "Square millimeters (cross-section)"}},
+  {"slug": "board-feet-energy-equiv-to-btu", "name": "Board feet (energy equiv.) to BTU", "category": "energy", "type": "standard", "teaser": "Convert the energy equivalent of a board foot of lumber into BTUs.", "labels": {"in1": "Board feet (energy equiv.)", "in2": "BTU"}, "factor": 14000.0},
+  {"slug": "brinell-to-rockwell-c", "name": "Brinell to Rockwell C", "category": "other", "type": "brinell-rockwell", "teaser": "Approximate Rockwell C hardness from Brinell hardness numbers.", "labels": {"in1": "Brinell", "in2": "Rockwell C"}},
 
 ];
 

hdyc-svelte/src/lib/engine.ts

@@ -181,6 +181,74 @@ export function solve(
         out.val1 = (!isNaN(v2) && v2 > 0) ? fmt(10 * Math.log10(v2)) : '';
       }
       break;
+
+    case 'awg': {
+      const log92 = Math.log(92);
+      const awgToDiameterMm = (g: number) => 0.127 * Math.pow(92, (36 - g) / 39);
+      const diameterMmToAwg = (d: number) => 36 - 39 * Math.log(d / 0.127) / log92;
+      const awgToCircularMils = (g: number) => 1000 * Math.pow(92, (36 - g) / 19.5);
+      const circularMilsToAwg = (a: number) => 36 - 19.5 * Math.log(a / 1000) / log92;
+      const awgToAreaMm2 = (g: number) => {
+        const d = awgToDiameterMm(g);
+        return Math.PI * Math.pow(d, 2) / 4;
+      };
+      const areaMm2ToAwg = (a: number) => {
+        const d = Math.sqrt((4 * a) / Math.PI);
+        return diameterMmToAwg(d);
+      };
+
+      const slug = calc.slug;
+      const formatAwg = (g: number) => isFinite(g) ? fmt(g) : '';
+
+      if (slug.includes('circular-mils')) {
+        if (source === 1) {
+          out.val2 = !isNaN(v1) ? fmt(awgToCircularMils(v1)) : '';
+        } else {
+          out.val1 = (!isNaN(v2) && v2 > 0) ? formatAwg(circularMilsToAwg(v2)) : '';
+        }
+      } else if (slug.includes('square-millimeters')) {
+        if (source === 1) {
+          out.val2 = !isNaN(v1) ? fmt(awgToAreaMm2(v1)) : '';
+        } else {
+          out.val1 = (!isNaN(v2) && v2 > 0) ? formatAwg(areaMm2ToAwg(v2)) : '';
+        }
+      } else {
+        // diameter in millimeters
+        if (source === 1) {
+          out.val2 = !isNaN(v1) ? fmt(awgToDiameterMm(v1)) : '';
+        } else {
+          out.val1 = (!isNaN(v2) && v2 > 0) ? formatAwg(diameterMmToAwg(v2)) : '';
+        }
+      }
+      break;
+    }
+
+    case 'brinell-rockwell': {
+      // Approximate correlation for steels:
+      // BHN = (1520000 - 4500 * HRC) / (100 - HRC)^2
+      if (source === 1) {
+        // Brinell to Rockwell C
+        if (!isNaN(v1) && v1 > 0) {
+          const a = v1;
+          const disc = 4500 ** 2 + 4 * a * 1070000;
+          const y = (4500 + Math.sqrt(disc)) / (2 * a);
+          const hrc = 100 - y;
+          out.val2 = fmt(hrc);
+        } else {
+          out.val2 = '';
+        }
+      } else {
+        // Rockwell C to Brinell
+        if (!isNaN(v2) && v2 < 100) {
+          const h = v2;
+          const bhn = (1520000 - 4500 * h) / Math.pow(100 - h, 2);
+          out.val1 = fmt(bhn);
+        } else {
+          out.val1 = '';
+        }
+      }
+      break;
+    }
   }
 
   return out;

hdyc-svelte/src/routes/+page.svelte

@@ -54,7 +54,7 @@
 
 <section class="hero">
   <h1>How Do You Convert?</h1>
-  <p>Fast, bidirectional unit conversions with no ads.</p>
+  <p>Fast unit conversions with no ads.</p>
   <div class="search-center">
     <SearchBar idPrefix="home-search" />
   </div>