雖然網上已有其他程式人員編寫了專計算電阻的程式，但在下自己亦編寫一個可以方便自己使用的電阻計算程式
程式其實不算複雜，閣下有興趣亦可以使用，當然有 bug 亦可以報告在下
程式原始碼
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 | <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <head> <title>電阻計算器</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/> <style type="text/css">/*<!--*/label.mra-block { display: block;}/*-->*/ </style> <script type="text/javascript">//<!--window.addEventListener("load", function (event) { calculateOhms();});function calculateOhms() { var ds = [ document.calculator.d0, document.calculator.d1, document.calculator.d2, document.calculator.d3, document.calculator.d4 ]; var r4s = [ null, document.getElementById("resistor-4-1"), document.getElementById("resistor-4-2"), document.getElementById("resistor-4-3"), document.getElementById("resistor-4-4") ]; var r5s = [ document.getElementById("resistor-5-0"), document.getElementById("resistor-5-1"), document.getElementById("resistor-5-2"), document.getElementById("resistor-5-3"), document.getElementById("resistor-5-4") ]; for (var i in ds) { for (var j = 0; j < ds[i].length; j++) { if (ds[i].item(j).checked) { // ds[i].item(j) = HTMLInputElement // ds[i].item(j).parentNode = HTMLLabelElement // ds[i].item(j).parentNode.parentNode = HTMLTableCellElement // ds[i].item(j).parentNode.parentNode.parentNode = HTMLTableRowElement var color = ds[i].item(j).parentNode.parentNode.parentNode.style.backgroundColor; var opacity = ((color == "") ? 0 : 1); if (r4s[i] != null) { r4s[i].setAttribute("fill", color); r4s[i].setAttribute("fill-opacity", opacity); } if (r5s[i] != null) { r5s[i].setAttribute("fill", color); r5s[i].setAttribute("fill-opacity", opacity); } } } } var t = trimDigit((-ds[0].value - ds[1].value - ds[2].value) * -ds[3].value); if (ds[4] != 0) { var lower = trimDigit(t * (1 - ds[4].value / 100)); var upper = t * 2 - lower; t = "(" + lower + " ~ " + upper + ") " + t; } document.calculator.ohms.value = t;}function trimDigit(value) { return (value.toFixed(3) - 0);}//--> </script> </head> <body> <form name="calculator" action="" method="get" onreset="return false;" onsubmit="return false;"> <table class="mra-collapse mra-table" width="95%" border="1" cellpadding="5"> <colgroup> <col width="10%"/> <col width="15%"/> <col width="15%"/> <col width="15%"/> <col width="15%"/> <col width="15%"/> <col width="15%"/> </colgroup> <thead> <tr> <th rowspan="4">顏色</th> <th rowspan="2">第一環<br />(百位)</th> <th>第二環<br />(十位)</th> <th>第三環<br />(個位)</th> <th>第四環<br />(倍數)</th> <th>第五環<br />(百分比誤差)</th> <th rowspan="3">第六環<br />(溫度系數)</th> </tr> <tr> <th colspan="4">四環</th> </tr> <tr> <th colspan="5">五環</th> </tr> <tr> <th colspan="6">六環</th> </tr> </thead> <tfoot> <tr> <th colspan="7"><input type="text" name="ohms" style="width: 300px; text-align: right;" onkeyup="selectRings();"/>Ω</th> </tr> <tr> <th colspan="7"> <div> <g stroke-width="16.444"> <path d="m67.127 5.1048c-5.9195-2.7229-16.101-4.854-22.612-4.854h-32.676c-6.5115 0-11.839 5.3276-11.839 11.839v88.071c0 6.5234 5.3276 11.839 11.839 11.839h32.676c6.5115 0 16.693-2.2376 22.612-4.854l1.1839-0.58011c5.9195-2.723 16.101-4.854 22.612-4.854h118.15c6.5234 0 16.681 2.2376 22.6 4.854l1.1958 0.58011c5.9195 2.7229 16.077 4.854 22.612 4.854h32.676c6.5352 0 11.839-5.3158 11.839-11.839v-88.071c0-6.5115-5.3039-11.839-11.839-11.839h-32.676c-6.5352 0-16.693 2.2495-22.612 4.854l-1.1958 0.59198c-5.9195 2.7229-16.077 4.854-22.6 4.854h-118.15c-6.5115 0-16.693-2.2495-22.612-4.854z" fill="#d9b477"/> <g fill="#000000"> <path id="resistor-4-1" d="m73.388 7.4727c-1.8943-0.59196-3.6701-1.1839-5.0908-1.8943l-1.1839-0.59196c-5.9195-2.7111-16.101-4.854-22.612-4.854h-1.4207v111.75h1.4207c6.5115 0 16.693-2.2376 22.612-4.854l1.1839-0.58011c1.4207-0.73402 3.1965-1.3141 5.0908-1.8943z"/> <rect id="resistor-4-2" x="103.71" y="10.551" width="30.427" height="91.042"/> <rect id="resistor-4-3" x="164.55" y="10.551" width="30.427" height="91.042"/> <rect id="resistor-4-4" x="260.68" y=".14428" width="11.555" height="111.74"/> </g> <rect x="260.68" y="9.8404" width="11.555" height="12.313" fill="#ffffff" fill-opacity=".5"/> </g> <g stroke-width="16.444"> <path d="m367.12 5.0981c-5.9198-2.7296-16.099-4.851-22.611-4.851l-32.673-2e-6c-6.5118 0-11.84 5.3278-11.84 11.84v88.074c0 6.5118 5.3278 11.84 11.84 11.84l32.673-1.1e-4c6.5118 0 16.691-2.2364 22.611-4.8674l1.184-0.57556c5.9198-2.7132 16.099-4.851 22.611-4.851h118.15c6.5282 0 16.707 2.2528 22.611 4.851l1.184 0.5755c5.9363 2.7296 16.099 4.8674 22.627 4.8674h32.673c6.5118 0 11.84-5.3114 11.84-11.84l4.5e-4 -88.074c0-6.5118-5.3114-11.84-11.84-11.84h-32.673c-6.5282 0-16.691 2.2528-22.627 4.851l-1.184 0.59203c-5.9034 2.7296-16.083 4.851-22.611 4.851h-118.15c-6.5118 0-16.691-2.2528-22.611-4.851z" fill="#7bc6b8"/> <g fill="#000000"> <path id="resistor-5-0" d="m373.39 7.466c-1.8911-0.59199-3.667-1.184-5.0976-1.8911l-1.184-0.59199c-5.9035-2.7132-16.083-4.851-22.593-4.851h-1.4307v111.75h1.4307c6.5118 0 16.691-2.2528 22.611-4.851l1.184-0.59192c1.4141-0.72353 3.2066-1.2991 5.0976-1.8911l7e-5 -97.084z"/> <rect id="resistor-5-1" x="391.87" y="10.541" width="30.421" height="91.05"/> <rect id="resistor-5-2" x="440.87" y="10.541" width="30.437" height="91.05"/> <path id="resistor-5-3" d="m487.98 10.59h23.021c3.3382 0 7.2024-1.036 7.2024-1.036v93.27s-3.3381-1.0688-7.2024-1.0688c-3.8643 0-23.021-0.11508-23.021-0.11508z"/> <rect id="resistor-5-4" x="560.68" y=".13205" width="11.56" height="111.75"/> </g> <rect x="560.68" y="9.8339" width="11.56" height="12.316" fill="#ffffff" fill-opacity=".5"/> </g> </svg> </div> </th> </tr> </tfoot> <tbody> <tr style="color:#ffffff; background-color: #000000;"> <th>黑色</th> <td><label class="mra-block"><input type="radio" name="d0" value="0" checked="checked" onchange="calculateOhms();"/>0</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="0" onchange="calculateOhms();"/>0</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="0" checked="checked" onchange="calculateOhms();"/>0</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="1" onchange="calculateOhms();"/>1</label></td> <td></td> <td></td> </tr> <tr style="color:#ffffff; background-color: #880c0c;"> <th>啡色</th> <td><label class="mra-block"><input type="radio" name="d0" value="100" onchange="calculateOhms();"/>100</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="10" onchange="calculateOhms();"/>10</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="1" onchange="calculateOhms();"/>1</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="10" checked="checked" onchange="calculateOhms();"/>10</label></td> <td><label class="mra-block"><input type="radio" name="d4" value="1" onchange="calculateOhms();"/>1</label></td> <td>100 PPM</td> </tr> <tr style="color:#ffffff; background-color: #ff0000;"> <th>紅色</th> <td><label class="mra-block"><input type="radio" name="d0" value="200" onchange="calculateOhms();"/>200</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="20" checked="checked" onchange="calculateOhms();"/>20</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="2" checked="checked" onchange="calculateOhms();"/>2</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="100" onchange="calculateOhms();"/>100</label></td> <td><label class="mra-block"><input type="radio" name="d4" value="2" onchange="calculateOhms();"/>2</label></td> <td>50 PPM</td> </tr> <tr style="color:#000000; background-color: #ffa800;"> <th>橙色</th> <td><label class="mra-block"><input type="radio" name="d0" value="300" onchange="calculateOhms();"/>300</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="30" onchange="calculateOhms();"/>30</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="3" onchange="calculateOhms();"/>3</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="1000" onchange="calculateOhms();"/>1000</label></td> <td></td> <td>15 PPM</td> </tr> <tr style="color:#000000; background-color: #ffff00;"> <th>黃色</th> <td><label class="mra-block"><input type="radio" name="d0" value="400" onchange="calculateOhms();"/>400</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="40" onchange="calculateOhms();"/>40</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="4" onchange="calculateOhms();"/>4</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="10000" onchange="calculateOhms();"/>10000</label></td> <td></td> <td>25 PPM</td> </tr> <tr style="color:#ffffff; background-color: #008a00;"> <th>綠色</th> <td><label class="mra-block"><input type="radio" name="d0" value="500" onchange="calculateOhms();"/>500</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="50" onchange="calculateOhms();"/>50</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="5" onchange="calculateOhms();"/>5</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="100000" onchange="calculateOhms();"/>100000</label></td> <td><label class="mra-block"><input type="radio" name="d4" value="0.5" onchange="calculateOhms();"/>0.5</label></td> <td></td> </tr> <tr style="color:#ffffff; background-color: #00008a;"> <th>藍色</th> <td><label class="mra-block"><input type="radio" name="d0" value="600" onchange="calculateOhms();"/>600</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="60" onchange="calculateOhms();"/>60</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="6" onchange="calculateOhms();"/>6</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="1000000" onchange="calculateOhms();"/>1000000</label></td> <td><label class="mra-block"><input type="radio" name="d4" value="0.25" onchange="calculateOhms();"/>0.25</label></td> <td></td> </tr> <tr style="color:#ffffff; background-color: #ff00ff;"> <th>紫色</th> <td><label class="mra-block"><input type="radio" name="d0" value="700" onchange="calculateOhms();"/>700</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="70" onchange="calculateOhms();"/>70</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="7" onchange="calculateOhms();"/>7</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="10000000" onchange="calculateOhms();"/>10000000</label></td> <td><label class="mra-block"><input type="radio" name="d4" value="0.1" onchange="calculateOhms();"/>0.1</label></td> <td></td> </tr> <tr style="color:#ffffff; background-color: #888888;"> <th>灰色</th> <td><label class="mra-block"><input type="radio" name="d0" value="800" onchange="calculateOhms();"/>800</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="80" onchange="calculateOhms();"/>80</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="8" onchange="calculateOhms();"/>8</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="100000000" onchange="calculateOhms();"/>100000000</label></td> <td><label class="mra-block"><input type="radio" name="d4" value="0.5" onchange="calculateOhms();"/>0.5</label></td> <td></td> </tr> <tr style="color:#000000; background-color: #ffffff;"> <th>白色</th> <td><label class="mra-block"><input type="radio" name="d0" value="900" onchange="calculateOhms();"/>900</label></td> <td><label class="mra-block"><input type="radio" name="d1" value="90" onchange="calculateOhms();"/>90</label></td> <td><label class="mra-block"><input type="radio" name="d2" value="9" onchange="calculateOhms();"/>9</label></td> <td><label class="mra-block"><input type="radio" name="d3" value="1000000000" onchange="calculateOhms();"/>1000000000</label></td> <td></td> <td></td> </tr> <tr style="color:#000000; background-color: #c0c800;"> <th>金色</th> <td></td> <td></td> <td></td> <td></td> <td><label class="mra-block"><input type="radio" name="d4" value="5" checked="checked" onchange="calculateOhms();"/>5</label></td> <td></td> </tr> <tr style="color:#000000; background-color: #c8c8c8;"> <th>銀色</th> <td></td> <td></td> <td></td> <td></td> <td><label class="mra-block"><input type="radio" name="d4" value="10" onchange="calculateOhms();"/>10</label></td> <td></td> </tr> <tr> <th>無色</th> <td></td> <td></td> <td></td> <td></td> <td><label class="mra-block"><input type="radio" name="d4" value="20" onchange="calculateOhms();"/>20</label></td> <td></td> </tr> </tbody> </table> </form> </body></html> |
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