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\n\t<\/p>\n
\n\t\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u7535\u673a\u6b65\u8fdb\u4e3a1—2—3—4\u7684\u987a\u5e8f\u3002\u5728\u540c\u4e00\u65f6\u95f4\uff0c\u6709\u4e24\u76f8\u88ab\u6fc0\u52b1\u3002\u4f46\u662f1\u76f8\u548c2\u76f8\uff0c3\u76f8\u548c4\u76f8\u7edd\u5bf9\u4e0d\u80fd\u540c\u65f6\u6fc0\u52b1\u3002<\/p>\n
\n\t\u56db\u76f8\u6df7\u548c\u578b\u6b65\u8fdb\u7535\u673a\uff0c\u6709\u4e00\u7279\u70b9\u5f88\u6709\u7528\u5904\u3002\u5b83\u53ef\u4ee5\u7528\u534a\u6b65\u65b9\u5f0f\u9a71\u52a8\u3002\u5c31\u662f\u8bf4\uff0c\u5728\u67d0\u4e00\u65f6\u95f4\uff0c\u6b65\u8fdb\u89d2\u4ec5\u524d\u8fdb\u4e00\u534a\u3002\u7528\u5355\u4e2a\u6df7\u5408\u6216\u7528\u53cc\u5411\u5f00\u5173\u5373\u53ef\u5b9e\u73b0\uff0c\u8fd9\u79cd\u903b\u8f91\u65f6\u5e8f\u7531\u88682\u5217\u51fa\u3002<\/p>\n
\n\t\u56db\u76f8\u6df7\u548c\u578b\u6b65\u8fdb\u7535\u673a\uff0c\u4e5f\u80fd\u5de5\u4f5c\u4e8e\u6bd4\u989d\u5b9a\u7535\u538b\u9ad8\u7684\u60c5\u51b5\u3002\u8fd9\u53ef\u4ee5\u7528\u4e32\u8054\u7535\u963b\u8fdb\u884c\u964d\u538b\u3002\u56e0\u4e3a1\u76f8\u548c2\u76f8\uff0c3\u76f8\u548c4\u76f8\u662f\u4e0d\u4f1a\u540c\u65f6\u5de5\u4f5c\u7684\uff0c\u6240\u4ee5\u6bcf\u5bf9\u4ec5\u4e00\u4e2a\u964d\u538b\u7535\u963b\uff0c\u4e32\u63a5\u5728\u56fe3\u4e2d\u7684X\u548cY\u70b9\u4e4b\u95f4\u3002\u56e0\u6b64\u989d\u5b9a\u7535\u538b\u4e3a6V\u7684\u6b65\u8fdb\u7535\u673a\uff0c\u5c31\u53ef\u4ee5\u5de5\u4f5c\u572812V\u7684\u7535\u6e90\u4e0b\u3002\u8fd9\u65f6\u9700\u4e32\u4e00\u4e2a6W\u30016Ω\u7684\u7535\u963b\u3002<\/p>\n
\n\t\u4e24\u76f8\u7535\u673a\u9a71\u52a8\u5668<\/u><\/p>\n
\n\t\u4e24\u76f8(\u4ea4\u6d41)\u7535\u673a\u6709\u65f6\u7528\u4f5c\u7cbe\u5bc6\u5531\u673a\u7684\u8f6c\u76d8\u3002\u5b83\u662f\u4e00\u79cd\u4f4e\u7535\u538b\u578b\u7684\u540c\u6b65\u673a\u6784\u3002<\/p>\n
\n\t\u56fe21\u4e3a\u4e24\u76f8\u7535\u673a\u9a71\u52a8\u5668\u7535\u8def\u3002\u8fd9\u4e2a\u7535\u8def\u80fd\u9a71\u52a88\u6b27\u4e24\u76f8\u7535\u673a\u3002\u6bcf\u4e2a\u7ed5\u7ec4\u53ef\u8fbe3\u74e6\u3002\u9891\u7387\u572845Hz\u523065Hz\u3002\u96c6\u6210\u7535\u8def\u9009\u7528LM377\u53cc\u8def3\u74e6\u97f3\u9891\u529f\u7387\u653e\u5927\u5668<\/u>\u4f5c\u9a71\u52a8\u3002\u7535\u6e90\u7528\u6b63\u8d1f11V\u3002<\/p>\n
\n\t\u7535\u8def\u5de5\u4f5c\u539f\u7406\u3002\u96c6\u6210\u7535\u8def\u7684\u5de6\u534a\u90e8\u5206\u63a5\u6210\u6587\u6c0f\u6865\u632f\u8361\u5668\uff0c\u9891\u7387\u53ef\u8c03\u7531RV1\u8c03\u8282\uff0c\u9891\u7387\u53ef\u53d8\u8303\u56f445Hz—65Hz\u3002\u632f\u5e45\u8c03\u8282\u7531RV2\u63a7\u5236\uff0c\u706f\u6ce1LP1\u4f5c\u7a33\u5b9a\u632f\u5e45\u7528\u3002IC1a\u7684\u8f93\u51fa\u4e00\u8def\u76f4\u63a5\u9988\u9001\u7535\u673a\u7684\u4e00\u76f8\u7ed5\u7ec4\u3002\u96c6\u6210\u7535\u8def\u7684\u53e6\u4e00\u534aIC1b\u662f\u4f5c\u4e3a85\u79fb\u76f8\u5668\u7528\u3002C6\u3001R6\u662f85\u79fb\u76f8\u5668\u3002\u4f46\u662f\u572860HZ\u65f6\u8981\u4e58\u4ee5\u4e00\u4e2a\u5341\u500d\u7684\u8870\u51cf\u56e0\u5b50\uff0c\u6240\u4ee5IC1b\u8981\u4e58\u4ee5\u5341\u500d\u7684\u589e\u76ca\u3002\u7535\u8def\u7a33\u5b9a\u6027\u7ecf\u53bb\u8026\u7f51\u7edcC3—R4—R5\uff0cC4\u548cC5\u4fdd\u8bc1\u3002\u7535\u673a\u7ed5\u7ec4\u4e0eC8\u3001C9\u6240\u7ec4\u6210\u7684\u8c10\u632f\u56de\u8def\uff0c\u8c03\u8c10\u5230\u4e2d\u95f4\u9891\u7387\u503c(55Hz)\u3002<\/p>\n
\n\t<\/p>\n
\n\t\u4f3a\u670d\u7535\u673a\u7cfb\u7edf<\/p>\n
\n\t\u4f3a\u670d\u7535\u673a\u662f\u4e00\u79cd\u4f20\u7edf\u7684\u7535\u673a\u3002\u5b83\u662f\u81ea\u52a8\u88c5\u7f6e\u7684\u6267\u884c\u5143\u4ef6\u3002<\/p>\n
\n\t\u4f3a\u670d\u7535\u673a\u7684\u6700\u5927\u7279\u70b9\u662f\u53ef\u63a7\u3002\u5728\u6709\u63a7\u5236\u4fe1\u53f7\u65f6\uff0c\u4f3a\u670d\u7535\u673a\u5c31\u8f6c\u52a8\uff0c\u4e14\u8f6c\u901f\u5927\u5c0f\u6b63\u6bd4\u4e8e\u63a7\u5236\u7535\u538b\u7684\u5927\u5c0f\u3002\u53bb\u6389\u63a7\u5236\u7535\u538b\u540e\uff0c\u4f3a\u670d\u7535\u673a\u5c31\u7acb\u5373\u505c\u6b62\u8f6c\u52a8\u3002\u4f3a\u670d\u7535\u673a\u7684\u5e94\u7528\u751a\u5e7f\uff0c\u51e0\u4e4e\u6240\u6709\u7684\u81ea\u52a8\u63a7\u5236\u7cfb\u7edf\u90fd\u9700\u8981\u7528\u5230\u3002\u5728\u5bb6\u7535\u4ea7\u54c1\u4e2d\uff0c\u4f8b\u5982\u5f55\u76f8\u673a\u3001\u6fc0\u5149\u5531\u673a\u7b49\u90fd\u662f\u4e0d\u53ef\u7f3a\u5c11\u7684\u91cd\u8981\u7ec4\u6210\u90e8\u5206\u3002<\/p>\n
\n\t1.\u7b80\u5355\u4f3a\u670d\u7535\u673a\u7684\u5de5\u4f5c\u539f\u7406<\/p>\n
\n\t<\/p>\n
\n\t\u56fe22\u793a\u51fa\u4e86\u4f3a\u670d\u7535\u673a\u7684\u6700\u7b80\u5355\u7684\u5e94\u7528\u3002\u7535\u4f4d\u5668RV1\u7531\u4f3a\u670d\u7535\u673a\u5e26\u52a8\u3002\u7535\u673a\u53ef\u9009\u7528\u7535\u6d41<\/u>\u4e0d\u8d85\u8fc7700mA\uff0c\u7535\u538b\u4e3a12\uff5e24V\u7684\u4efb\u4e00\u79cd\u4f3a\u670d\u7535\u673a\u3002\u56fe\u4e2dRV1 \u548cRV2\u662f\u63a5\u6210\u60e0\u65af\u767b(Wheatstone)\u7535\u6865\u3002\u96c6\u6210\u7535\u8defLM378\u662f\u53cc\u8def4\u74e6\u529f\u7387\u653e\u5927\u5668<\/u>\uff0c\u4e5f\u4ee5\u6865\u63a5\u65b9\u5f0f\u6784\u6210\u7535\u673a\u9a71\u52a8\u5dee\u5206\u653e\u5927\u5668\u3002<\/p>\n
\n\t\u5f53RV2\u7684\u4efb\u610f\u53d8\u5316\uff0c\u90fd\u5c06\u7834\u574f\u7535\u6865\u7684\u5e73\u8861\uff0c\u4f7fRV1—RV2\u4e4b\u95f4\u4ea7\u751f\u4e00\u5dee\u5206\u7535\u538b\uff0c\u5e76\u4e14\u52a0\u4ee5\u653e\u5927\u540e\u9001\u81f3\u7535\u673a\u3002\u7535\u673a\u5c06\u8f6c\u52a8\uff0c\u62d6\u52a8\u7535\u4f4d\u5668RV1\u5230\u65b0\u7684\u4f4d\u7f6e\uff0c\u4f7f\u7535\u6865\u91cd\u65b0\u8fbe\u5230\u65b0\u7684\u5e73\u8861\u3002\u6240\u4ee5\u8bf4\uff0cRV1\u662f\u8ddf\u8e2a\u4e86RV2\u7684\u8fd0\u52a8\u3002<\/p>\n
\n\t<\/p>\n
\n\t\u56fe23\u662f\u7528\u65b9\u5757\u56fe\u5f62\u5f0f\uff0c\u753b\u51fa\u4e86\u6d4b\u901f\u4f20\u611f\u5668<\/u>\u4f3a\u670d\u7535\u673a\u7cfb\u7edf\uff0c\u80fd\u7528\u4f5c\u5531\u673a\u8f6c\u76d8\u7cbe\u5bc6\u901f\u5ea6\u63a7\u5236\u7684\u539f\u7406\u56fe\u3002\u7535\u673a\u7528\u4f20\u7edf\u7684\u76ae\u5e26\u673a\u6784\u9a71\u52a8\u8f6c\u76d8\u3002\u8f6c\u76d8\u7684\u8fb9\u7f18\uff0c\u7528\u7b49\u95f4\u9694\u53cd\u5c04\u6761\u6587\u56fe\u5f62\u7ed3\u6784\u3002\u7528\u5149\u7535\u6d4b\u901f\u8ba1\u8fdb\u884c\u76d1\u89c6\u548c\u68c0\u6d4b\u3002\u5149\u7535\u6d4b\u901f\u8ba1\u7684\u8f93\u51fa\u4fe1\u53f7\u6b63\u6bd4\u4e8e\u8f6c\u76d8\u7684\u8f6c\u901f\u3002\u628a\u5149\u7535\u6d4b\u901f\u8ba1\u8f93\u51fa\u4fe1\u53f7\u7684\u76f8\u4f4d\u548c\u9891\u7387\uff0c\u4e0e\u6807\u51c6\u632f\u8361\u5668\u7684\u76f8\u4f4d\u548c\u9891\u7387\u8fdb\u884c\u6bd4\u8f83\uff0c\u7528\u5b83\u7684\u8bef\u5dee\u4fe1\u53f7\u63a7\u5236\u7535\u673a\u9a71\u52a8\u7535\u8def\u3002<\/p>\n
\n\t\u56e0\u6b64\uff0c\u8f6c\u76d8\u7684\u8f6c\u901f\u5c31\u7cbe\u786e\u5730\u4fdd\u6301\u5728\u989d\u5b9a\u8f6c\u901f\u4e0a\u3002\u989d\u5b9a\u8f6c\u901f\u7684\u6362\u6863\uff0c\u53ef\u7531\u64cd\u4f5c\u5f00\u5173\u63a7\u5236\u3002\u8fd9\u4e9b\u63a7\u5236\u7535\u8def\uff0c\u5df2\u6709\u5382\u5bb6\u505a\u6210\u4e13\u7528\u7684\u96c6\u6210\u7535\u8def\u3002<\/p>\n
\n\t2.\u6570\u5b57\u6bd4\u4f8b\u4f3a\u670d\u7535\u673a<\/p>\n
\n\t<\/p>\n
\n\t\u4f3a\u670d\u7535\u673a\u7684\u6700\u597d\u7c7b\u578b\u4e4b\u4e00\uff0c\u662f\u7528\u6570\u5b57\u6bd4\u4f8b\u9065\u63a7\u7cfb\u7edf\u3002\u5b9e\u9645\u4e0a\u8fd9\u4e9b\u88c5\u7f6e\u662f\u7531\u4e09\u90e8\u4efd\u7ec4\u6210\uff1a\u91c7\u7528\u96c6\u6210\u7535\u8def\u3001\u4f3a\u670d\u7535\u673a\u3001\u51cf\u901f\u9f7f\u8f6e\u76d2\u7535\u4f4d\u5668\u673a\u6784\u3002\u56fe24\u662f\u8fd9\u79cd\u7cfb\u7edf\u7684\u65b9\u5757\u56fe\u3002\u7535\u8def\u7684\u9a71\u52a8\u8f93\u5165\uff0c\u662f\u7528\u5468\u671f\u4e3a15ms\u800c\u8109\u51b2\u5bbd\u5ea6\u4e3a1\uff5e2ms\u7684\u8109\u51b2\u4fe1\u53f7\u9a71\u52a8\u3002\u8f93\u5165\u8109\u51b2\u7684\u5bbd\u5ea6\uff0c\u63a7\u5236\u4f3a\u670d\u673a\u68b0\u8f93\u51fa\u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff1a1ms\u8109\u5bbd\uff0c\u4f4d\u7f6e\u5728\u6700\u5de6\u8fb9\uff1b1.5ms\u5728\u4e2d\u662f\u4f4d\u7f6e\uff0c2ms\u5728\u6700\u53f3\u8fb9\u7684\u4f4d\u7f6e\u3002<\/p>\n
\n\t\u6bcf\u4e00\u4e2a\u8f93\u5165\u8109\u51b2\u5206\u4e09\u8def\u540c\u65f6\u4f20\u9001\u3002\u4e00\u8def\u89e6\u53d11.5ms\u8109\u5bbd\u7684\u56fa\u5b9a\u8109\u51b2\u53d1\u751f\u5668\u3002\u4e00\u8def\u8f93\u5165\u89e6\u53d1\u8109\u51b2\u53d1\u751f\u5668\uff0c\u7b2c\u4e09\u8def\u9001\u5165\u8109\u5bbd\u6bd4\u8f83\u7535\u8def\u3002\u7528\u9f7f\u8f6e\u76d2\u8f93\u51fa\u81f3RV1\uff0c\u63a7\u5236\u53ef\u53d8\u5bbd\u5ea6\u7684\u8109\u51b2\u53d1\u751f\u5668\u3002\u8fd9\u4e09\u79cd\u8109\u51b2\u540c\u65f6\u9001\u5230\u8109\u5bbd\u6bd4\u8f83\u5668<\/u>\u540e\uff0c\u4e00\u8def\u786e\u5b9a\u7535\u673a\u9a71\u52a8\u7535\u8def\u7684\u65b9\u5411\u3002\u53e6\u4e00\u8def\u9001\u7ed9\u8109\u5bbd\u6269\u5c55\u5668\uff0c\u4ee5\u63a7\u5236\u4f3a\u670d\u7535\u673a\u7684\u901f\u5ea6\uff0c\u4f7f\u5f97RV1\u8fc5\u901f\u9a71\u52a8\u673a\u68b0\u4f4d\u7f6e\u8f93\u51fa\u8ddf\u968f\u8f93\u5165\u8109\u5bbd\u7684\u4efb\u4f55\u53d8\u5316\u3002<\/p>\n
\n\t\u4e0a\u8ff0\u4f3a\u670d\u7535\u673a\u578b\u5e38\u7528\u4e8e\u591a\u8def\u9065\u63a7\u7cfb\u7edf\u3002\u56fe25\u793a\u51fa\u4e86\u56db\u8def\u6570\u5b57\u6bd4\u4f8b\u63a7\u5236\u7cfb\u7edf\u7684\u6ce2\u5f62\u56fe\u3002<\/p>\n
\n\t<\/p>\n
\n\t\u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u51fa\u662f\u4e32\u884c\u6570\u636e\u8f93\u5165\uff0c\u7ecf\u8fc7\u8bd1\u7801\u5668\u5206\u51fa\u5404\u8def\u7684\u63a7\u5236\u4fe1\u53f7\u3002\u6bcf\u4e00\u5e27\u5305\u542b4ms\u7684\u540c\u6b65\u8109\u51b2\uff0c\u7d27\u63a5\u5728\u540e\u9762\u7684\u662f\u56db\u8def\u53ef\u53d8\u5bbd\u5ea6(1\uff5e2ms)\u987a\u5e8f\u7684“\u8def”\u8109\u51b2\u3002\u8bd1\u7801\u5668\u5c06\u56db\u8def\u8109\u51b2\u53d8\u6362\u4e3a\u5e76\u884c\u5f62\u5f0f\uff0c\u5c31\u80fd\u7528\u4e8e\u63a7\u5236\u4f3a\u670d\u7535\u673a\u3002<\/p>\n
\n\t3.\u6570\u5b57\u4f3a\u670d\u7535\u673a\u7535\u8def<\/p>\n
\n\t\u6570\u5b57\u4f3a\u670d\u7535\u673a\u63a7\u5236\u5355\u5143\uff0c\u53ef\u4ee5\u4e70\u5230\u73b0\u6210\u7684\u96c6\u6210\u7535\u8def\u3002\u4f8b\u5982ZN409CE\u6216NE544N\u578b\u4f3a\u670d\u7535\u673a\u653e\u5927\u5668\u96c6\u6210\u7535\u8def\u3002\u56fe26\u548c\u56fe27\u793a\u51fa\u4e86\u8fd9\u4e24\u79cd\u96c6\u6210\u7535\u8def\u7684\u5178\u578b\u5e94\u7528\u3002<\/p>\n
\n\t<\/p>\n
\n\t\u56fe\u4e2d\u5143\u4ef6\u503c\u9002\u7528\u4e8e\u8f93\u5165\u8109\u51b2\u5bbd\u5ea6\u4e3a1\uff5e2ms\uff0c\u5e27\u8109\u51b2\u5bbd\u5ea6\u5927\u7ea6\u4e3a18ms\u7684\u60c5\u51b5\u3002<\/p>\n
\n\t\u56fe28\u662f\u9002\u7528\u4e0a\u8ff0\u4f3a\u670d\u7535\u673a\u578b\u7684\u901a\u7528\u6d4b\u8bd5\u7535\u8def\u3002\u4f3a\u670d\u7535\u6e90\u7535\u6c60\u901a\u5e38\u4e3a5V\u3002\u8f93\u5165\u8109\u51b2\u7ecf\u6807\u51c6\u7684\u4f3a\u670d\u63d2\u5ea7\u9001\u5230\u4f3a\u670d\u7535\u8def\u3002\u5e27\u8109\u51b2\u7684\u5bbd\u5ea6\u4e3a13—28ms\uff1b\u7528RV1\u8c03\u8282\u63a7\u5236\u3002RV2\u8c03\u8282\u63a7\u5236\u8109\u51b2\u5bbd\u5ea6\u57281—2ms\u4e4b\u95f4\u3002\u7528RV4\u5fae\u8c03\u4e2d\u95f4\u503c\u4e3a1.5ms\uff0e\u8f93\u51fa\u7535\u5e73\u7531RV3\u8fdb\u884c\u8c03\u8282\u3002<\/p>\n
\n\t\u4e24\u4e2a\u96c6\u6210\u7535\u8def\u4e3a\u65f6\u57fa\u7535\u8defCMOS7555\u578b\uff0c\u7535\u6e90\u7535\u538b\u53ef\u4ee5\u4f4e\u52303V\u4ecd\u7136\u5de5\u4f5c\u3002IC1\u4e3a\u65e0\u7a33\u591a\u8c10\u632f\u8361\u5668\uff0c\u4ea7\u751f\u5e27\u65f6\u95f4\u8109\u51b2\uff0c\u5b83\u7684\u8f93\u51fa\u89e6\u53d1IC2\u3002\u800cIC2\u662f\u4e00\u4e2a\u5355\u7a33\u7535\u8def\uff0c\u4ea7\u751f\u8f93\u51fa\u6d4b\u8bd5\u8109\u51b2\u3002<\/p>\n
\n\t\u6b65\u8fdb\u7535\u673a\u7684\u63a7\u5236\u7535\u8def<\/p>\n
\n\t\u56db\u76f8\u6b65\u8fdb\u7535\u673a\u53ef\u7528\u51e0\u79cd\u4e13\u7528\u7684\u96c6\u6210\u7535\u8def\u9a71\u52a8\u5668\uff0cSAAl027\u662f\u5176\u4e2d\u5e38\u7528\u7684\u4e00\u79cd\uff0c\u5b83\u7684\u7279\u70b9\u662f\u5de5\u4f5c\u7535\u538b\u8303\u56f4\u5bbd9.5V\uff5e18V\uff1b\u8f93\u51fa\u9a71\u52a8\u7535\u6d41\u5927\uff0c\u53ef\u8fbe500mA\u3002\u5b83\u9002\u5408\u4f5c\u56db\u76f8\u5168\u6b65\u6b65\u8fdb\u7535\u673a\u7684\u63a7\u5236\u3002\u56fe4\u662fSAAl027\u7684\u5916\u5f62\u548c\u5f15\u811a\u529f\u80fd\u56fe\u3002\u56fe5\uff08\u4e0b\u9762↓\uff09\u662f\u5b83\u7684\u5185\u90e8\u539f\u7406\u65b9\u5757\u56fe\u53ca\u57fa\u672c\u5e94\u7528\u3002<\/p>\n
\n\t<\/p>\n
\n\t<\/p>\n
\n\t\u5b9e\u9645\u4e0a\uff0c\u96c6\u6210\u7535\u8def\u6709\u4e09\u8def\u7f13\u51b2\u8f93\u5165\uff0c\u6bcf\u4e00\u4e2a\u7f13\u51b2\u8f93\u5165\u90fd\u63a7\u5236\u4e00\u4e2a\u4e8c\u4f4d(\u56db\u72b6\u6001)\u7684\u540c\u6b65\u53ef\u9006\u8ba1\u6570\u5668\u3002\u5b83\u7684\u8f93\u51fa\u9001\u5230\u4e00\u4e2a\u7f16\u7801\u53d8\u6362\u5668\u3002\u7136\u540e\u7528\u56db\u8def\u8f93\u51fa\uff0c\u53bb\u63a7\u5236\u8f93\u51fa\u7ea7\u7684\u56db\u4e2a\u6676\u4f53\u7ba1\u3002\u8f93\u51fa\u7ea7\u4ee5\u96c6\u7535\u6781\u5f00\u8def\u65b9\u5f0f\u5de5\u4f5c\u3002\u7535\u673a\u7684\u7ed5\u7ec4\u7ebf\u5708\u4e32\u5165\u96c6\u7535\u6781\u3002\u4e3a\u9632\u6b62\u53cd\u5411\u7535\u52a8\u52bf\u635f\u574f\u6676\u4f53\u7ba1\uff0c\u5728\u7ed5\u7ec4\u7684\u4e24\u7aef\u5e76\u8054\u4e00\u53cd\u5411\u4e8c\u6781\u7ba1<\/u>\u3002<\/p>\n
\n\t\u8981\u7279\u522b\u6ce8\u610f\u7684\u662f\uff1a\u96c6\u6210\u7535\u8def13\u811a\u548c12\u811a\u662f\u6d41\u8fc7\u5927\u7535\u6d41\u7684\u5f15\u811a\u3002\u800c14\u811a\u548c5\u811a\u6d41\u8fc7\u5c0f\u7535\u6d41\u3002\u5728\u4f7f\u7528\u65f65\u811a\u548c12\u811a\u90fd\u8981\u63a5\u5730\u3002\u901a\u5e38\u6b6312V\u76f4\u63a5\u63a5\u523013\u811a\uff0c\u7136\u540e\u7ecf R1—C1\u53bb\u8026\u7535\u8def\u63a5\u523014\u811a\u3002\u6b63\u7535\u538b\u4e5f\u5fc5\u987b\u7ecfRx\u9001\u52304\u811a\u3002Rx\u7684\u4f5c\u7528\u662f\u51b3\u5b9a\u56db\u4e2a\u6676\u4f53\u7ba1\u7684\u6700\u5927\u8f93\u51fa\u9a71\u52a8\u7535\u6d41\u7684\u5bb9\u91cf\u3002Rx\u7684\u5927\u5c0f\u53ef\u7531\u4e0b\u5f0f\u8ba1\u7b97\uff1b<\/p>\n
\n\tRx\uff1d(4E\uff0fI)\uff0d6<\/p>\n
\n\t\u5f0f\u4e2dE\u4e3a\u7535\u6e90\u7535\u538b\uff0cI\u4e3a\u6240\u5e0c\u671b\u7684\u7535\u673a\u6700\u5927\u76f8\u7535\u6d41\u3002\u5f53\u752812V\u65f6\uff0cRx\u503c\u53d6420Ω\u3001180Ω\u621678Ω)\u65f6\uff0c\u6700\u5927\u8f93\u51fa\u7535\u6d41\u5206\u522b\u4e3a100mA\u3001200mA\u3001\u6216350mA\u3002<\/p>\n
\n\tSAA1027\u96c6\u6210\u7535\u8def\u6709\u4e09\u4e2a\u8f93\u5165\u63a7\u5236\u7aef\uff1a\u8ba1\u6570\u3001\u65b9\u5f0f\u548c\u590d\u4f4d\u3002\u590d\u4f4d\u7aef\u901a\u5e38\u662f\u9ad8\u7535\u5e73\u3002\u8ba1\u6570\u5668\u6bcf\u6b21\u4ece\u4f4e\u7535\u5e73\u5230\u9ad8\u7535\u5e73\u7684\u8df3\u53d8\uff0c\u5c06\u4f7f\u96c6\u6210\u7535\u8def\u6539\u53d8\u72b6\u6001\u3002\u5168\u90e8\u7684\u5de5\u4f5c\u72b6\u6001\u5df2\u7531\u88683\u5217\u51fa\u3002<\/p>\n
\n\t<\/p>\n
\n\t\u5728\u4efb\u4f55\u65f6\u5019\uff0c\u6bcf\u9694\u56db\u6b65\u65f6\u5e8f\u91cd\u590d\u4e00\u6b21\u3002\u4f46\u662f\u590d\u4f4d\u7aef\u4e3a\u4f4e\u7535\u5e73\u65f6\uff0c\u53ef\u4ee5\u590d\u4f4d\u5230\u8d77\u59cb\u72b6\u6001\u3002<\/p>\n
\n\t\u5f53\u65b9\u5f0f\u63a7\u5236\u8f93\u5165\u7aef\u4e3a\u4f4e\u7535\u5e73\u65f6\uff0c\u5728\u4e00\u4e2a\u65b9\u5411\u4e0a(\u901a\u5e38\u4e3a\u987a\u65f6\u9488\u8f6c\u52a8)\u987a\u5e8f\u91cd\u590d\u3002\u53cd\u4e4b\uff0c\u65b9\u5f0f\u63a7\u5236\u7aef\u4e3a\u9ad8\u7535\u5e73\u65f6\uff0c\u5219\u5728\u53e6\u4e00\u4e2a\u65b9\u5411\u4e0a(\u53cd\u65f6\u9488\u8f6c\u52a8)\u987a\u5e8f\u91cd\u590d\u3002<\/p>\n
\n\t\u56fe6\u662fSAAl027\u7684\u9a71\u52a8\u548c\u8bd5\u9a8c\u7535\u8def\u3002<\/p>\n
\n\t<\/p>\n
\n\t\u8fd9\u4e2a\u7535\u8def\u7528\u4e8e\u6df7\u548c\u578b\u56db\u76f8\u6b65\u8fdb\u7535\u673a\uff0c\u989d\u5b9a\u7535\u6d41\u53ef\u8fbe300mA\u3002\u7535\u673a\u53ef\u7528SW3\u8fdb\u884c\u624b\u5de5\u7684\u5355\u6b65\u8bd5\u9a8c\uff0c\u6216\u8005\u7528SW2\u7ecf555\uff0f7555\u65e0\u7a33\u632f\u8361\u5668\u8fdb\u884c\u81ea\u52a8\u6b65\u8fdb\u7684\u8bd5\u9a8c\u3002SW4\u53ef\u63a7\u5236\u7535\u673a\u7684\u65b9\u5411\u3002SW5\u7528\u4e8e\u590d\u4f4d\u63a7\u5236\u8bd5\u9a8c\u3002<\/p>\n
\n\t\u7528SW1\u548cRV1\u7535\u4f4d\u5668\uff0c\u53ef\u4f7f\u65e0\u7a33\u7535\u8def\u7684\u5de5\u4f5c\u901f\u5ea6\u80fd\u5728\u5f88\u5bbd\u7684\u8303\u56f4\u5185\u53d8\u5316\u3002\u7f6e\u4f4d1\u6863\u65f6\u4e3a\u4f4e\u901f\u63a7\u5236\uff0c\u9891\u7387\u8303\u56f4\u4ece5Hz—68Hz\u3002SW2\u57282\u5f53\u548c3\u6863\u65f6\uff0c\u632f\u8361\u9891\u7387\u5206\u522b\u4e3a\u7b2c1\u6863\u768410\u500d\u548c100\u500d\u3002\u603b\u7684\u901f\u5ea6\u63a7\u5236\u8303\u56f4\u4ece6—8500\u8f6c\uff0f\u5206\u3002<\/p>\n
\n\t\u56fe6\u662f\u4e00\u79cd\u57fa\u672c\u7535\u8def\u3002\u6839\u636e\u4e0d\u540c\u7684\u4f7f\u7528\u573a\u5408\uff0c\u8fd8\u6709\u51e0\u79cd\u53d8\u5316\u3002<\/p>\n
\n\t\u56fe7\u662f\u4e00\u79cd\u6b65\u8fdb\u7535\u673a\u4e0e\u5fae\u5904\u7406\u5668\u7684\u63a5\u53e3\u7535\u8def\u3002<\/p>\n
\n\t\u8ba1\u7b97\u673a\u6216\u5fae\u5904\u7406\u5668\u7684\u8f93\u51fa\u7aef\u53e3\uff0c\u901a\u5e38\u7ec8\u7aef\u9a71\u52a8\u7535\u538b\u4f4e\u4e8e1V\u65f6\uff0c\u4f5c\u4e3a\u903b\u8f910\u72b6\u6001\uff1b\u800c\u9ad8\u4e8e3.5V\u65f6\uff0c\u4f5c\u4e3a\u903b\u8f911\u72b6\u6001\u3002\u8fd9\u79cd\u903b\u8f91\u79f0\u4e3a\u6b63\u903b\u8f91\u3002\u4e0d\u8fc7\u56fe7\u4e2d\u7535\u8def\u4e0e\u4e0a\u8ff0\u76f8\u53cd\u3002\u56e0\u6b64\uff0c\u6b65\u8fdb\u7535\u673a\u8f93\u5165\u7aef\u4ece\u9ad8\u7535\u5e73\u5411\u4f4e\u7535\u5e73\u8f6c\u6362\u65f6\uff0c\u5de5\u4f5c\u72b6\u6001\u6539\u53d8\u3002\u590d\u4f4d\u7aef\u7528\u9ad8\u7535\u5e73\u590d\u4f4d\u3002\u65b9\u5f0f\u8f93\u5165\u7aef\u4e3a\u4f4e\u7535\u5e73\u65f6\uff0c\u7535\u673a\u6b63\u8f6c\uff1b\u800c\u9ad8\u7535\u5e73\u65f6\uff0c\u7535\u673a\u53cd\u8f6c\u3002<\/p>\n
\n\t\u56fe6\u7535\u8def\u8bbe\u8ba1\u6700\u5927\u8f93\u51fa\u7535\u6d41\u4e3a300mA\u3002<\/p>\n
\n\t\u5982\u679c\u5e0c\u671b\u628a\u7535\u6d41\u6269\u5c555A\uff0c\u5219\u91c7\u7528\u56fe8\u4e2d\u7684\u4e24\u4e2a\u7535\u8def\u3002\u6b65\u8fdb\u7535\u673a\u7684\u6bcf\u76f8\u90fd\u9700\u8981\u5916\u52a0\u9a71\u52a8\u7535\u8def\uff0c\u4e00\u4e2a\u56db\u76f8\u6b65\u8fdb\u7535\u673a\uff0c\u9700\u8981\u589e\u52a0\u56db\u4e2a\u8fd9\u6837\u7684\u9644\u52a0\u7535\u8def\u3002\u56fe8(a))\u7684\u7535\u8def\u7528\u4e8e\u9a71\u52a8\u7535\u8def\uff0c\u4e00\u4e2a\u56db\u76f8\u6b65\u8fdb\u7535\u673a\uff0c\u9700\u8981\u589e\u52a0\u56db\u4e2a\u8fd9\u6837\u7684\u9644\u52a0\u7535\u8def\u3002\u56fe8(a)\u7684\u7535\u8def\u7528\u4e8e\u9a71\u52a8\u56db\u4e2a\u5b8c\u5168\u72ec\u7acb\u7684\u7ed5\u7ec4\u3002\u56fe8(b)\u7684\u7535\u8def\u7528\u4e8e\u7ed5\u7ec4\u5177\u6709\u516c\u5171\u70b9\u6b65\u8fdb\u7535\u673a\u3002D1\u548cD2\u7684\u4f5c\u7528\u662f\u9632\u6b62\u7535\u673a\u7684\u53cd\u7535\u52a8\u52bf\u635f\u574f\u8f93\u51fa\u7ea7\u6676\u4f53\u7ba1\u3002<\/p>\n
\n\t<\/p>\n
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