{"id":198,"date":"2025-08-10T15:59:57","date_gmt":"2025-08-10T07:59:57","guid":{"rendered":"https:\/\/www.shadabuliu.top\/?p=198"},"modified":"2025-08-10T16:53:02","modified_gmt":"2025-08-10T08:53:02","slug":"%e3%80%90%e7%ac%94%e8%ae%b0%e3%80%91%e6%a1%8c%e9%9d%a2%e5%b0%8f%e9%a3%8e%e6%89%87","status":"publish","type":"post","link":"https:\/\/www.shadabuliu.top\/index.php\/2025\/08\/10\/198\/","title":{"rendered":"\u3010\u7b14\u8bb0\u3011\u684c\u9762\u5c0f\u98ce\u6247"},"content":{"rendered":"\n

\u8bf4\u660e<\/h1>\n\n\n\n

\u6b64\u6587\u7ae0\u4e3a\u672c\u4eba\u5236\u4f5c\u684c\u9762\u5c0f\u98ce\u6247\u65f6\u8bb0\u5f55\u7684\u7535\u8def\u90e8\u5206\u7b14\u8bb0\u3002\u5982\u9700\u5236\u4f5c\u6559\u7a0b\u53ef\u70b9\u51fb\u6b64\u5904<\/a>\u8df3\u8f6c\u3002<\/p>\n\n\n\n

\u6982\u8ff0<\/h1>\n\n\n\n

\u4f7f\u7528\u5e38\u89c412cm\u673a\u7bb1\u6563\u70ed\u98ce\u6247\u5236\u4f5c\u4e86\u4e00\u4e2a\u684c\u9762\u5c0f\u98ce\u6247\u3002
\u8981\u6c42\uff1a<\/strong><\/p>\n\n\n\n

    \n
  1. \u9502\u7535\u6c60\u4f9b\u7535\uff0c\u53ef\u5145\u7535<\/li>\n\n\n\n
  2. \u9502\u7535\u6c60\u7535\u91cf\u663e\u793a<\/li>\n\n\n\n
  3. \u98ce\u529b\u5927\u5c0f\u53ef\u8c03<\/li>\n\n\n\n
  4. \u98ce\u6247\u4fef\u4ef0\u89d2\u5ea6\u53ef\u8c03\uff0c\u4e14\u8303\u56f4\u5c3d\u53ef\u80fd\u5927<\/li>\n<\/ol>\n\n\n\n

    \u521d\u6b65\u5b9e\u73b0\u60f3\u6cd5<\/h1>\n\n\n\n

    \u4f9b\u7535<\/h2>\n\n\n\n

    \u673a\u7bb1\u98ce\u6247\u4e00\u822c\u90fd\u662f12V\u7684\uff0c\u4f46\u662f\u9502\u7535\u6c60\u7535\u538b\u4e00\u822c\u57283.7V\u5de6\u53f3\uff0c\u60f3\u7528\u9502\u7535\u6c60\u7ed9\u98ce\u6247\u4f9b\u7535\u5e38\u89c4\u6709\u4e24\u79cd\u89e3\u51b3\u65b9\u6cd5\uff1a<\/p>\n\n\n\n

      \n
    1. \u4e32\u80543\u8282\u9502\u7535\u6c60\u4ee5\u8fbe\u5230\u5347\u538b\u7684\u76ee\u7684\uff0c\u4ece\u800c\u9a71\u52a8\u98ce\u6247<\/li>\n\n\n\n
    2. \u4f7f\u7528\u989d\u5916\u7684\u5347\u538b\u7535\u8def\u5b9e\u73b0\u5347\u538b\u3002
      \u5bf9\u4e8e\u65b9\u68481\uff0c\u4e32\u8054\u5347\u538b\u540e\u7535\u538b\u867d\u7136\u63a5\u8fd112V\uff0c\u4f46\u662f\u968f\u7740\u9502\u7535\u6c60\u7535\u538b\u7684\u6d6e\u52a8\u5176\u603b\u7535\u538b\u4e5f\u662f\u4e0d\u786e\u5b9a\u7684\uff0c\u800c\u4e143\u4e32\u7684\u9502\u7535\u6c60\u5145\u7535\u4e5f\u662f\u4e2a\u95ee\u9898\uff0c\u4f7f\u75283\u5757\u9502\u7535\u6c60\uff0c\u5728\u5efa\u6a21\u8bbe\u8ba1\u65f6\u7a7a\u95f4\u5927\u5c0f\u4e5f\u9700\u8981\u989d\u5916\u8003\u8651\u3002\u6240\u4ee5\u51b3\u5b9a\u4f7f\u7528\u989d\u5916\u7684\u5347\u538b\u7535\u8def\u83b7\u5f9712V\u7535\u538b\u3002<\/li>\n<\/ol>\n\n\n\n

      \u5145\u7535<\/h2>\n\n\n\n

      \u786e\u5b9a\u53ea\u4f7f\u75281\u8282\u9502\u7535\u6c60\uff0c\u8fd8\u9700\u8981\u6709\u7535\u6e90\u8def\u5f84\u7ba1\u7406\u4ee5\u5b9e\u73b0\u8fb9\u5145\u8fb9\u653e\uff0c\u540c\u65f6\u8fd8\u8981\u53ef\u4ee5\u663e\u793a\u9502\u7535\u6c60\u5f53\u524d\u7535\u91cf\u3002\u63a5\u53e3\u4f7f\u7528\u5e38\u89c1\u7684Type-C\u63a5\u53e3\uff0c\u65b9\u4fbf\u5145\u7535\u3002<\/p>\n\n\n\n

      \u8c03\u901f<\/h2>\n\n\n\n

      \u673a\u7bb1\u98ce\u6247\u7684\u8c03\u901f\u4e3aPWM\uff0c\u9891\u7387\u4e00\u822c\u572825kHz\u5de6\u53f3\u3002\u521d\u6b65\u60f3\u6cd5\u662f\u4f7f\u7528NE555\u6765\u4ea7\u751fPWM\u65b9\u6ce2\u4fe1\u53f7\u6765\u63a7\u5236\u98ce\u6247\u3002\u673a\u7bb1PWM\u4fe1\u53f7\u4e00\u822c\u90fd\u662f5V\u7684\uff0c\u8fd9\u5c31\u9700\u89815V\u7535\u538b\u3002<\/p>\n\n\n\n

      \u5b9e\u9645\u5b9e\u73b0<\/h1>\n\n\n\n

      \u7535\u6e90\u7ba1\u7406<\/h2>\n\n\n\n

      \u4f9b\u7535\u4f7f\u7528\u4e00\u5757606090\u9502\u7535\u6c60\u3002<\/p>\n\n\n\n

      \"\"<\/div><\/figure>\n\n\n\n

      \u5145\u7535\u90e8\u5206\u4f7f\u7528IP5306\u82af\u7247\uff0c\u8fd9\u662f\u4e00\u4e2a\u81ea\u5e26\u7535\u91cf\u663e\u793a<\/strong>\u3001\u5145\u653e\u7535\u4fdd\u62a4<\/strong>\u3001\u5145\u653e\u7535\u8def\u5f84\u7ba1\u7406<\/strong>\u548c5V\u5347\u538b<\/strong>\u7684\u7535\u6e90\u7ba1\u7406\u82af\u7247\u3002\u975e\u5e38\u9002\u5408\u7528\u5728\u6b64\u9879\u76ee\u4e2d\u3002
      \u82af\u7247\u53ef\u63d0\u4f9b\u6700\u59272.4A\u8f93\u51fa\u7535\u6d41\uff0c2.1A\u6700\u5927\u5145\u7535\u7535\u6d41\u3002\u50cf\u4e0a\u56fe\u9502\u7535\u6c60\u5145\u7535\u500d\u7387\u4e00\u822c\u662f0.5C\uff0c\u90a3\u4e48\u9502\u7535\u6c60\u6700\u5927\u5145\u7535\u7535\u6d41\u4e3a\uff1a$40000.5=2000mA$\uff0c\u4e5f\u5c31\u662f2A\u6700\u5927\u5145\u7535\u7535\u6d41\uff0c\u7528IP5306\u6b63\u597d\u9002\u5408\u3002 <\/p>\n\n\n\n

      \u8f93\u51fa\u7535\u6d41\u6700\u59272.4A\uff0c\u529f\u7387\uff1a$P = UI = 5*2.4 = 12W$\uff0c\u56e0\u4e3a\u540e\u9762\u8fd8\u8981\u6dfb\u52a0\u5347\u538b\u7535\u8def\uff0c\u5347\u538b\u7535\u8def\u6548\u7387\u6309$90\\%$\u8ba1\u7b97\uff0c\u5219\u6700\u5927\u8f93\u51fa\u529f\u7387$P_{max}=0.9*12=10.8W$\uff0c\u4e00\u822c12cm\u673a\u7bb1\u98ce\u6247\u7684\u529f\u7387\u5728$1.8$~$4.2W$\u4e4b\u95f4\uff0c$10.8W$\u7684\u529f\u7387\u8db3\u591f\u4f7f\u7528\u3002
      <\/p>\n\n\n\n

      \u82af\u7247\u5728\u8d1f\u8f7d\u7535\u6d41\u6301\u7eed\u5c0f\u4e8e45ma\uff08\u5b9e\u6d4b\u7531\u4e8e\u751f\u4ea7\u5382\u5bb6\u4e0d\u540c\u8fd9\u4e2a\u503c\u53ef\u80fd\u4f1a\u523090ma\u5de6\u53f3\uff0932\u79d2\u540e\u4f1a\u81ea\u52a8\u65ad\u5f00\u8f93\u51fa\uff0c\u53ef\u4ee5\u81ea\u52a8\u68c0\u6d4b\u8d1f\u8f7d\uff0c\u53ea\u9700\u8981\u5c06\u5f00\u5173\u4e32\u8054\u5728\u82af\u7247\u8f93\u51fa\u7ebf\u8def\u4e0a\u5373\u53ef\u5b9e\u73b0\u81ea\u52a8\u5f00\u5173\u3002
      \u6839\u636e\u82af\u7247\u624b\u518c\u7ed8\u5236\u7684\u7535\u6e90\u90e8\u5206\u539f\u7406\u56fe\uff1a<\/p>\n\n\n\n

      \"\"\/<\/div><\/figure>\n\n\n\n

      8\u811aVOUT\u662f\u82af\u7247\u7684\u8f93\u51fa\u5f15\u811a\uff0c\u6b64\u5f15\u811a\u4e0e\u7535\u4f4d\u5668\u7684\u5f00\u5173\u5f15\u811a\u76f8\u8fde\u3002
      \u624b\u518c\u4e2dLED\u662f\u4e0d\u9700\u8981\u9650\u6d41\u7535\u963b\u7684\uff0c\u4f46\u662f\u6211\u5728\u5b9e\u9645\u6d4b\u8bd5\u65f6\u53d1\u73b0\u4e0d\u52a0\u9650\u6d41\u7535\u963bLED\u7684\u4eae\u5ea6\u4f1a\u5f88\u4eae\uff0c\u5c24\u5176\u5728\u591c\u95f4\u66f4\u4e3a\u660e\u663e\uff0c\u6240\u4ee5\u8fd9\u91cc\u7ed9\u5b83\u52a0\u4e86\u4e2a10k\u7684\u9650\u6d41\u7535\u963b\u3002<\/p>\n\n\n\n

      \u5347\u538b<\/h2>\n\n\n\n

      \u5347\u538b\u4f7f\u7528MT3608\u82af\u7247\uff0c\u8fd9\u662f\u4e00\u6b3e\u9ad8\u6548\u7387 DC-DC \u5347\u538b\u8f6c\u6362\u5668<\/strong>\u82af\u7247\uff0c\u652f\u6301\u8f93\u5165\u7535\u538b\u8303\u56f42-24V\uff0c\u8f93\u51fa\u7535\u538b\u9ad8\u8fbe28V\uff0c\u6548\u7387\u9ad8\u8fbe97%\u3002\u4ec5\u9700\u7b80\u5355\u5916\u56f4\u5668\u4ef6\u5373\u53ef\u642d\u5efa\u51fa\u9002\u5408\u7684\u5347\u538b\u7535\u8def\uff0c\u8fd9\u662f\u82af\u7247\u624b\u518c\u7ed9\u51fa\u7684\u7ecf\u5178\u5e94\u7528\u7535\u8def<\/p>\n\n\n\n

      \"\"\/<\/div><\/figure>\n\n\n\n

      \u8bbe\u7f6e\u8f93\u51fa\u7535\u538b<\/strong>
      MT3608\u8f93\u51fa\u7535\u538b\u7531\u4e0b\u516c\u5f0f\u786e\u5b9a$$V_{OUT}=V_{REF} \u00d7 (1+\\frac{R_1}{R_2})$$
      \u5176\u4e2d\u5185\u90e8\u57fa\u51c6\u7535\u538b$V_{REF}=0.6V$\uff0c\u82e5\u60f3\u8981\u83b7\u5f9712V\u8f93\u51fa\uff0c\u5219\u9700\u8981$\\frac{R_1}{R_2}=19$\uff0c\u8fd9\u91cc\u9009$R_2=5.1k$\uff0c\u5219$R_1=5.1\u00d719=96.9k$\uff0c\u8fd9\u91cc\u9009\u62e9$R_1=100k$
      \u6839\u636e\u82af\u7247\u624b\u518c\u548c\u4e0a\u8ff0\u8ba1\u7b97\u7ed8\u5236\u7684\u5347\u538b\u90e8\u5206\u539f\u7406\u56fe\uff1a<\/p>\n\n\n\n

      \"\"<\/div><\/figure>\n\n\n\n

      PWM<\/h2>\n\n\n\n

      PWM\u5fc5\u987b\u662f\u53ef\u8c03\u7684\uff0c\u4f7f\u7528NE555<\/a>\u6765\u4ea7\u751fPWM\u4fe1\u53f7\uff0c\u8ba9\u5176\u5de5\u4f5c\u5728\u65e0\u7a33\u6001\u6a21\u5f0f\uff0c\u5173\u4e8eNE555\u53ef\u8c03\u5360\u7a7a\u6bd4\u7535\u8def\u8be6\u60c5\u53ef\u4ee5\u70b9\u51fb\u6b64\u5904<\/a>\u67e5\u770b\u3002\u4e0b\u56fe\u4e3a\u90e8\u5206\u622a\u53d6\uff1a<\/p>\n\n\n\n

      \"\"\/<\/div><\/figure>\n\n\n\n

      \u63a7\u5236\u673a\u7bb1\u98ce\u6247\u9700\u898125kHz\u5de6\u53f3\u7684\u9891\u7387\u3002\u7531\u4e8e\u90e8\u5206\u98ce\u6247\u5728\u4f4e\u5360\u7a7a\u6bd4\u4e0b\u4f1a\u505c\u8f6c\uff0c\u800c\u4e14IP5306\u5728\u8d1f\u8f7d\u8fc7\u4f4e\u7684\u60c5\u51b5\u4e0b\u662f\u4f1a\u81ea\u52a8\u65ad\u5f00\u8f93\u51fa\u7684\u3002\u6240\u4ee5\u7535\u8def\u7684\u6700\u5c0f\u5360\u7a7a\u6bd4\u4e0d\u5e94\u8be5\u8fc7\u4f4e\uff0c\u8fd9\u91cc\u5148\u8bbe\u5b9a\u4e3a40%\u3002\u4e3a\u4e86\u4f7f\u5360\u7a7a\u6bd4\u5c3d\u53ef\u80fd\u7684\u53ef\u4ee5\u8fbe\u5230100%\uff0c\u5c31\u9700\u8981\u4f7f$R_2=0$\uff0cR\u5728\u5b9e\u9645\u4e2d\u9009\u62e9\u7684\u662f\u4e00\u4e2a50k\u03a9\u7684\u7535\u4f4d\u5668\uff0c\u73b0\u5728\u53ea\u9700\u8981\u786e\u5b9a$R_1$\u548c$C$\u7684\u503c\u5c31\u884c\u4e86\u3002<\/p>\n\n\n\n

      \u8ba1\u7b97\u8fc7\u7a0b\uff1a<\/p>\n\n\n\n

      \u5df2\u77e5\uff1a$R_2=0$\uff0c$R=50k$\uff0c$D_{min}=40\\%$\uff0c$f=25k$\uff1b\u6c42$R_1$\u548c$C$\u3002<\/strong><\/p>\n\n\n\n

      \u7531\u5360\u7a7a\u6bd4\u516c\u5f0f\uff1a$D=\\frac{t_1}{T}=\\frac{R_1+R_\u5145}{R_1+R_2+R}=\\frac{R_1+R_\u5145}{R_1+50k}$\uff0c\u53ef\u77e5$R_\u5145$\u8d8a\u5c0f\u5360\u7a7a\u6bd4\u8d8a\u5c0f\uff0c\u5f53$R_\u5145=0$\u65f6\u5360\u7a7a\u6bd4D\u8fbe\u5230\u6700\u5c0f\u503c\u3002<\/p>\n\n\n\n

      \u5373$D_{min}=\\frac{R_1}{R_1+50}$\uff0c\u4ee3\u5165$D_{min}=40\\%$\u53ef\u5f97$R_1=33.33k$\uff0c\u5728\u5e38\u7528\u7535\u963b\u4e2d\u627e\u5230\u6700\u63a5\u8fd1\u6b64\u503c\u7684\u7535\u963b\u503c\u4e3a$33k\u03a9$\uff0c\u6240\u4ee5\u786e\u5b9a$R_1=33k\u03a9$<\/mark><\/strong>\u3002<\/p>\n\n\n\n

      \u7531\u9891\u7387\u516c\u5f0f\uff1a$f=\\frac{1}{T}=\\frac{1.44}{(R_1+R_2+R)C}=\\frac{1.44}{(33k+50k)C}=25k$\uff0c
      \u53ef\u6c42\u5f97$C\u2248694pF$\uff0c\u5728\u5e38\u7528\u7535\u5bb9\u4e2d\u9009\u53d6$C=680pF$<\/mark><\/strong>\uff0c\u81f3\u6b64\u6240\u9700\u53c2\u6570\u5168\u90e8\u8ba1\u7b97\u5b8c\u6bd5\u3002<\/p>\n\n\n\n

      \n\n\n\n

      \u4e0b\u9762\u518d\u6839\u636e\u6240\u9009\u503c\u6c42\u5b9e\u9645\u9891\u7387$f$\u548c\u6700\u5c0f\u5360\u7a7a\u6bd4$D_{min}$\uff1b<\/p>\n\n\n\n

      \u9891\u7387\uff1a$f=\\frac{1}{T}=\\frac{1.44}{(R_1+R_2+R)C}=\\frac{1.44}{83\u00d710^3\u00d7680\u00d710^{-12}}\u224825.5k$<\/p>\n\n\n\n

      \u6700\u5c0f\u5360\u7a7a\u6bd4\uff1a$D_{min}=\\frac{t_1}{T}=\\frac{R_1+R_\u5145}{R_1+R_2+R}=\\frac{33}{83}\u224839.8\\%$<\/p>\n\n\n\n

      \u5b9e\u9645\u5dee\u522b\u5728\u53ef\u63a5\u53d7\u8303\u56f4\u5185\uff0c\u786e\u5b9a\u9009\u503c$R_1=33k\uff0cC=680pF$\u3002<\/p>\n\n\n\n

      \u6839\u636e\u82af\u7247\u624b\u518c\u548c\u8ba1\u7b97\u503c\u7ed8\u5236\u51faPWM\u63a7\u5236\u90e8\u5206\u539f\u7406\u56fe\uff1a<\/p>\n\n\n\n

      \"\"<\/div><\/figure>\n\n\n\n

      \u81f3\u6b64\u5b8c\u6574\u7535\u8def\u539f\u7406\u56fe\u7ed8\u5236\u5b8c\u6210\uff1a<\/p>\n\n\n\n

      \"\"\/<\/div><\/figure>\n\n\n\n

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