https://knightli.com/zh-tw/tags/%E9%9B%BB%E6%BA%90%E6%A8%A1%E5%A1%8A/ Recent content in 電源模塊 on KnightLi的博客 Hugo -- gohugo.io zh-tw Thu, 28 Apr 2022 00:00:00 +0000 https://knightli.com/zh-tw/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E9%9B%A2-12v-5v-%E9%99%8D%E5%A3%93%E6%A8%A1%E5%A1%8A/ Thu, 28 Apr 2022 00:00:00 +0000 https://knightli.com/zh-tw/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E9%9B%A2-12v-5v-%E9%99%8D%E5%A3%93%E6%A8%A1%E5%A1%8A/ <h2 id="華為-pw22arab-pw22asab">華為 PW22ARAB, PW22ASAB </h2><p>這倆模塊構造不太一樣，數據基本一致，海鮮市場價格大概幾塊錢一個（買一大塊板回來自己拆價格更便宜，12塊錢4個）。華為通訊設備上的。 拆華為pw22用鉗子夾住en腳慢慢往上抬就行，煤氣灶燒烤拆也不錯，掌握好火候不會掉銅腳。烙鐵很難拆下來，風槍容易掉件。 <img src="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/1.jpeg" width="400" height="390" srcset="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/1_hu_a450eb3a5107d5e9.jpeg 480w, https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/1_hu_82706b6e728c5983.jpeg 1024w" loading="lazy" class="gallery-image" data-flex-grow="102" data-flex-basis="246px" ></p> <h3 id="效率">效率 </h3><p>輸入：12V；輸出：5V</p> <table> <thead> <tr> <th>輸出電流</th> <th>1A</th> <th>5A</th> <th>10A</th> <th>15A</th> <th>20A</th> <th>25A</th> <th>27A</th> </tr> </thead> <tbody> <tr> <td>效率</td> <td>88.8%</td> <td>94.7%</td> <td>93.12%</td> <td>90.77%</td> <td>88%</td> <td>84.4%</td> <td>過流保護</td> </tr> </tbody> </table> <p>2-15A的範圍內，效率都較高，能到90%以上。空載功耗大了點，約1.5W，所以這也是低負載的效率低了點的原因，同時發熱也有點大。</p> <h3 id="參考接線圖">參考接線圖 </h3><p><img src="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/2.jpeg" width="394" height="400" srcset="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/2_hu_3c1d3810e6c9e58a.jpeg 480w, https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/2_hu_966db12084e86117.jpeg 1024w" loading="lazy" class="gallery-image" data-flex-grow="98" data-flex-basis="236px" ></p> <p>調壓的可調電阻串在地和TRIM之間即可，可調範圍大概0-5.5V，輸入最高14V。 TRIM電阻的常見阻值可選擇2.7KΩ（對應輸出為5V）、4.42KΩ（對應輸出為3.3V），其它電壓請自行測試。</p> <h2 id="中興zxdn10">中興ZXDN10 </h2><p>這是個極小的模塊，海鮮市場價格大概1.5元一個. 中興通訊設備上的。 <img src="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/3.jpeg" width="400" height="323" srcset="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/3_hu_69e45b6119de461b.jpeg 480w, https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/3_hu_87ea07cccca397eb.jpeg 1024w" loading="lazy" class="gallery-image" data-flex-grow="123" data-flex-basis="297px" ></p> <h3 id="效率-1">效率 </h3><p>輸入：12V；輸出：5V</p> <table> <thead> <tr> <th>輸出電流</th> <th>1A</th> <th>2A</th> <th>3A</th> <th>4A</th> <th>5A</th> <th>6A</th> <th>7A</th> <th>8A</th> <th>9A</th> <th>10A</th> <th>11A</th> <th>12A</th> </tr> </thead> <tbody> <tr> <td>效率</td> <td>92.2%</td> <td>94.8%</td> <td>94.3%</td> <td>93.96%</td> <td>93.58%</td> <td>93.29%</td> <td>92.8%</td> <td>92.24%</td> <td>91.60%</td> <td>91.00%</td> <td>90.2%</td> <td>保護</td> </tr> </tbody> </table> <p>由上表可知在功率允許的範圍內，低負載效率比上面華為的還高。</p> <h3 id="參考接線圖-1">參考接線圖 </h3><p><img src="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/4.jpeg" width="400" height="270" srcset="https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/4_hu_2c45879c9368000c.jpeg 480w, https://knightli.com/2022/04/28/%E4%BA%8C%E6%89%8B-dc-%E9%9D%9E%E9%9A%94%E7%A6%BB-12v-5v-%E9%99%8D%E5%8E%8B%E6%A8%A1%E5%9D%97/4_hu_42f89a01e69c201c.jpeg 1024w" loading="lazy" class="gallery-image" data-flex-grow="148" data-flex-basis="355px" ></p> <p>網上有些說法（包括海鮮賣家）會告訴你調壓的電阻需要接在輸出和地之間，但其實只要串在調節和地之間即可。 TRIM電阻的常見阻值可選擇100Ω（對應輸出為5V），其它電壓煩請自行測試。</p>