{"id":391,"date":"2026-08-10T11:03:57","date_gmt":"2026-08-10T03:03:57","guid":{"rendered":"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/?p=391"},"modified":"2026-08-10T11:03:57","modified_gmt":"2026-08-10T03:03:57","slug":"%e7%be%8e%e5%9b%bdus-digital-corporation-ma4-%e5%be%ae%e5%9e%8b%e7%bb%9d%e5%af%b9%e5%bc%8f%e7%a3%81%e8%bd%b4%e7%bc%96%e7%a0%81%e5%99%a8%ef%bc%8c%e8%83%bd%e5%a4%9f%e6%97%a0%e9%97%b4%e9%9a%94%e3%80%81","status":"publish","type":"post","link":"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/%e7%be%8e%e5%9b%bdus-digital-corporation-ma4-%e5%be%ae%e5%9e%8b%e7%bb%9d%e5%af%b9%e5%bc%8f%e7%a3%81%e8%bd%b4%e7%bc%96%e7%a0%81%e5%99%a8%ef%bc%8c%e8%83%bd%e5%a4%9f%e6%97%a0%e9%97%b4%e9%9a%94%e3%80%81\/","title":{"rendered":"\u7f8e\u56fdUS Digital Corporation  MA4 \u5fae\u578b\u7edd\u5bf9\u5f0f\u78c1\u8f74\u7f16\u7801\u5668\uff0c\u80fd\u591f\u65e0\u95f4\u9694\u3001\u8fde\u7eed\u5730\u53cd\u9988360\u00b0\u8303\u56f4\u5185\u7684\u8f74\u4f4d\u4fe1\u606f"},"content":{"rendered":"<h2><span class=\"transmart-tgt-container\"><span class=\"transmart-tgt-wrapper\"><span><a href=\"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/tag\/ma4\/\" title=\"View all posts in MA4\" target=\"_blank\">MA4<\/a>\u00a0\u5fae\u578b\u7edd\u5bf9\u5f0f\u78c1\u8f74<a href=\"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/tag\/%e7%bc%96%e7%a0%81%e5%99%a8\/\" title=\"View all posts in \u7f16\u7801\u5668\" target=\"_blank\">\u7f16\u7801\u5668<\/a><\/span><\/span><\/span><\/h2>\n<h3><span class=\"transmart-tgt-container\"><span class=\"transmart-tgt-wrapper\"><span>MA4\u529f\u80fd<\/span><\/span><\/span><\/h3>\n<ul>\n<li><span class=\"transmart-tgt-font-container\">12\u4f4d\u6a21\u62df\u6216PWM\u8f93\u51fa<\/span><\/li>\n<li><span class=\"transmart-tgt-font-container\">\u5fae\u578b\u5c3a\u5bf8\uff08\u76f4\u5f840.55\u82f1\u5bf8\uff09<\/span><\/li>\n<li><span class=\"transmart-tgt-font-container\">\u5de5\u4f5c\u6e29\u5ea6\u8303\u56f4\u4e3a-40\u6444\u6c0f\u5ea6\u81f3125\u6444\u6c0f\u5ea6<\/span><\/li>\n<li><span class=\"transmart-tgt-font-container\">\u9501\u6263\u5f0f\u8fde\u63a5\u5668<\/span><\/li>\n<li><span class=\"transmart-tgt-font-container\">\u4e09\u79cd\u8f74\u626d\u77e9\u9009\u9879*<\/span><\/li>\n<\/ul>\n<h3>MA4\u4ea7\u54c1\u63cf\u8ff0<\/h3>\n<p>MA4\u662f\u4e00\u79cd\u78c1\u6027\u7edd\u5bf9\u7f16\u7801\u5668\uff0c\u80fd\u591f\u65e0\u95f4\u9694\u3001\u8fde\u7eed\u5730\u53cd\u9988360\u00b0\u8303\u56f4\u5185\u7684\u8f74\u4f4d\u4fe1\u606f\u3002\u8be5\u7f16\u7801\u5668\u53ef\u63d0\u4f9b\u6a21\u62df\u4fe1\u53f7\u8f93\u51fa\uff0c\u4e5f\u53ef\u8f93\u51fa\u8109\u5bbd\u8c03\u5236\u5f62\u5f0f\u7684\u6570\u5b57\u4fe1\u53f7\u3002\u5b83\u5b9e\u9645\u4e0a\u662f\u65b0\u4e00\u4ee3\u7684<a href=\"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/tag\/us-digital\/\" title=\"View all posts in US Digital\" target=\"_blank\">US Digital<\/a> MA3\u78c1\u6027\u7edd\u5bf9\u7f16\u7801\u5668\u7684\u5347\u7ea7\u7248\u3002<\/p>\n<p>\u6a21\u62df\u8f93\u51fa\u53ef\u63d0\u4f9b\u4e0e\u8f74\u7684\u7edd\u5bf9\u4f4d\u7f6e\u6210\u6b63\u6bd4\u7684\u76f4\u6d41\u7535\u538b\uff0c\u5176\u5206\u8fa8\u7387\u53ef\u8fbe12\u4f4d\u3002<\/p>\n<p>PWM\u8f93\u51fa\u80fd\u591f\u63d0\u4f9b\u4e0e\u8f74\u7684\u7edd\u5bf9\u4f4d\u7f6e\u6210\u6b63\u6bd4\u7684\u8109\u51b2\u5360\u7a7a\u6bd4\u3002\u8be5\u8f93\u51fa\u7684\u5206\u8fa8\u7387\u4e3a12\u4f4d\uff0c\u540c\u65f6\u8fd8\u67092\u79cd\u4e0d\u540c\u7684\u8f93\u51fa\u9891\u7387\u53ef\u9009\u3002<\/p>\n<p>\u5171\u6709\u4e09\u79cd\u8f74\u626d\u77e9\u9009\u9879\u53ef\u4f9b\u9009\u62e9\uff1a<\/p>\n<ul>\n<li>\u9ed8\u8ba4\u503c\uff08-D\uff09\uff1a\u9002\u7528\u4e8e\u4eba\u673a\u4ea4\u4e92\u9886\u57df\u7684\u5957\u7ba1\u5f0f\u886c\u5957\uff0c\u5177\u6709\u66f4\u9ad8\u7684\u963b\u5c3c\u6548\u679c\u3002<\/li>\n<li>\u6eda\u73e0\u8f74\u627f\uff08-B\uff09\uff1a\u9002\u7528\u4e8e\u9ad8\u901f\u5e94\u7528\u7684\u5fae\u578b\u7cbe\u5bc6\u6eda\u73e0\u8f74\u627f\uff08\u4ec5\u9002\u7528\u4e8e\u76f4\u5f84\u4e3a1\/8\u82f1\u5bf8\u7684\u8f74\uff09\u3002<\/li>\n<li>\u8f7b\u9759\u6001\u963b\u529b\uff08-N\uff09\uff1a\u9002\u7528\u4e8e\u4f4e\u901f\u5e94\u7528\u7684\u3001\u963b\u5c3c\u8f83\u5c0f\u7684\u5957\u7b52\u886c\u5957\u3002<\/li>\n<\/ul>\n<p>MA4\u901a\u8fc7\u4e00\u79cd3\u9488\u30011.25\u6beb\u7c73\u95f4\u8ddd\u7684\u6781\u6027\u8fde\u63a5\u5668\u8fdb\u884c\u8fde\u63a5\u3002<\/p>\n<p>1\/8\u82f1\u5bf8\u8f74\u6709\u4e09\u79cd\u626d\u77e9\u9009\u9879\uff0c\u800c1\/4\u82f1\u5bf8\u53ca6\u6beb\u7c73\u8f74\u5219\u5404\u6709\u4e24\u79cd\u626d\u77e9\u9009\u9879\u3002<\/p>\n<h3>\u4ea7\u54c1\u89c4\u683c<\/h3>\n<h4>\u73af\u5883<\/h4>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570<\/th>\n<th>\u4ef7\u503c<\/th>\n<th>\u5355\u5143<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5de5\u4f5c\u6e29\u5ea6<\/td>\n<td>-40\u81f3+125<\/td>\n<td>C<\/td>\n<\/tr>\n<tr>\n<td>\u632f\u52a8\uff0810Hz\u81f32kHz\uff0c\u6b63\u5f26\u6ce2\uff09<\/td>\n<td>20<\/td>\n<td>G<\/td>\n<\/tr>\n<tr>\n<td>\u51b2\u51fb\u6ce2\uff086\u6beb\u79d2\uff0c\u534a\u6b63\u5f26\u6ce2\u5f62\uff09<\/td>\n<td>75<\/td>\n<td>G<\/td>\n<\/tr>\n<tr>\n<td>\u9759\u7535\u653e\u7535\uff0cIEC 61000-4-2<\/td>\n<td>\u00b1 4<\/td>\n<td>\u5343\u4f0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u673a\u68b0\u7684<\/h4>\n<table>\n<thead>\n<tr>\n<th>\u89c4\u683c\u53c2\u6570<\/th>\n<th>\u8896\u5f0f\u886c\u5957<\/th>\n<th>\u6eda\u73e0\u8f74\u627f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u6700\u5927\u8f74\u901f\uff081\uff09\uff08\u673a\u68b0\u5f0f\uff09<\/td>\n<td>100\u8f6c\/\u5206\u949f<\/td>\n<td>15000\u8f6c\/\u5206\u949f<\/td>\n<\/tr>\n<tr>\n<td>\u6700\u5927\u52a0\u901f\u5ea6<\/td>\n<td>10000 \u8f90\u5c04\/\u79d2\u00b2<\/td>\n<td>250000 \u5f27\u5ea6\/\u79d2\u00b2<\/td>\n<\/tr>\n<tr>\n<td>\u6700\u5927\u8f74\u626d\u77e9<\/td>\n<td>0.5\u82f1\u5bf8\u76ce\u53f8\uff08D\u9009\u9879\uff09<br \/>\n0.3\u82f1\u5bf8\u76ce\u53f8\uff08N\u9009\u9879\uff09<\/td>\n<td>0.05\u82f1\u5bf8\u76ce\u53f8\uff08B\u9009\u9879\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u8f74\u6700\u5927\u8f7d\u8377<\/td>\n<td>2\u78c5\u52a8\u6001\u8f7d\u8377<br \/>\n20\u78c5\u9759\u6001\u8f7d\u8377<\/td>\n<td>1\u78c5\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8f74\u627f\u5bff\u547d\uff082\uff09<\/td>\n<td>&gt; 1000000\u6b21\u65cb\u8f6c<\/td>\n<td>L<sub>10<\/sub>\u00a0= (28.3\/F<sub>r<\/sub>)\u00b3<br \/>\n\uff0c\u5176\u4e2dL<sub>10<\/sub>\u8868\u793a\u8f74\u627f\u7684\u5bff\u547d\uff0c\u5355\u4f4d\u4e3a\u767e\u4e07\u8f6c\u6570\uff1b\u800cF<sub>r<\/sub>\u5219\u8868\u793a\u8f74\u7684\u5f84\u5411\u8f7d\u8377\uff0c\u5355\u4f4d\u4e3a\u78c5\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u91cd\u91cf<\/td>\n<td>0.42\u76ce\u53f8\u3002<\/td>\n<td>0.31\u76ce\u53f8\u3002<\/td>\n<\/tr>\n<tr>\n<td>\u8f74\u6700\u5927\u8df3\u52a8\u91cf<\/td>\n<td>0.0015\u82f1\u5bf8\u7684T.I.R.\u503c\u3002<\/td>\n<td>0.0015\u82f1\u5bf8\u7684T.I.R.\u503c\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>(1) \u7528\u4e8e\u89e3\u7801\u4f4d\u7f6e\u7684\u82af\u7247\u4f1a\u5229\u7528\u91c7\u6837\u6570\u636e\u3002\u968f\u7740\u8f6c\u901f\u7684\u63d0\u9ad8\uff0c\u6bcf\u8f6c\u7684\u8bfb\u53d6\u6b21\u6570\u4f1a\u51cf\u5c11\u3002\u6bcf\u8f6c\u7684\u8bfb\u53d6\u6b21\u6570\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p>n = 400000 \/ \u8f6c\/\u5206\u949f<\/p>\n<p>(2) \u4ec5\u5728\u8f74\u5411\u8f74\u8f7d\u8377\u53ef\u5ffd\u7565\u4e0d\u8ba1\u7684\u60c5\u51b5\u4e0b\u6709\u6548<\/p>\n<h4>\u5b89\u88c5<\/h4>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570<\/th>\n<th>\u4ef7\u503c<\/th>\n<th>\u5355\u5143<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5b54\u5f84<\/td>\n<td>0.375 +0.005 \/ -0.0<\/td>\n<td>in<\/td>\n<\/tr>\n<tr>\n<td>\u9762\u677f\u539a\u5ea6<\/td>\n<td>\u6700\u59270.125\u3002<\/td>\n<td>in<\/td>\n<\/tr>\n<tr>\n<td>\u9762\u677f\u87ba\u6bcd\u6700\u5927\u626d\u77e9<\/td>\n<td>20.0<\/td>\n<td>\u82f1\u78c5\u529b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h4>\u6750\u6599<\/h4>\n<table>\n<thead>\n<tr>\n<th>\u7ec4\u4ef6<\/th>\n<th>\u6750\u6599<\/th>\n<th>\u626d\u77e9\u9009\u9879<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8f74\u6746<\/td>\n<td>\u4e0d\u9508\u94a2<br \/>\n\u9ec4\u94dc<\/td>\n<td>\u8896\u5f0f\u886c\u5957\uff08-D\u548c-N\u9009\u9879\uff09<br \/>\n\u6eda\u73e0\u8f74\u627f\uff08\u4ec5-B\u9009\u9879\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u886c\u5957<\/td>\n<td>\u9ec4\u94dc<\/td>\n<td>&#8211;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u7535\u6c14<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u53c2\u6570<\/th>\n<th>\u6700\u5c0f\u503c\u3002<\/th>\n<th>TYP.<\/th>\n<th>\u6700\u5927\u503c\u3002<\/th>\n<th>\u5355\u5143<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7535\u6e90\u4f9b\u5e94<\/td>\n<td>4.5<\/td>\n<td>5.0<\/td>\n<td>5.5<\/td>\n<td>\u4f0f\u7279<\/td>\n<\/tr>\n<tr>\n<td>\u4f9b\u7535\u7535\u6d41<\/td>\n<td><\/td>\n<td>16<\/td>\n<td>20<\/td>\n<td>\u6beb\u5b89<\/td>\n<\/tr>\n<tr>\n<td>\u542f\u52a8\u65f6\u95f4<\/td>\n<td><\/td>\n<td><\/td>\n<td>50<\/td>\n<td>\u6beb\u79d2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/%e7%be%8e%e5%9b%bdus-digital-corporation-ma3-%e5%be%ae%e5%9e%8b%e7%bb%9d%e5%af%b9%e5%bc%8f%e7%a3%81%e8%bd%b4%e7%bc%96%e7%a0%81%e5%99%a8\/\">\u7f8e\u56fdUS Digital Corporation MA3 \u5fae\u578b\u7edd\u5bf9\u5f0f\u78c1\u8f74\u7f16\u7801\u5668\uff0c\u80fd\u591f\u65e0\u95f4\u65ad\u5730\u68c0\u6d4b360\u00b0\u8303\u56f4\u5185\u7684\u8f74\u4f4d\u7f6e<\/a><\/p>\n<p><a href=\"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/%e7%be%8e%e5%9b%bdus-digital-corporation-hd25a-%e9%ab%98%e6%80%a7%e8%83%bd%e5%b7%a5%e4%b8%9a%e7%ba%a7%e5%9d%9a%e5%9b%ba%e5%9e%8b%e9%87%91%e5%b1%9e%e5%85%89%e5%ad%a6%e7%bc%96%e7%a0%81%e5%99%a8\/\">\u7f8e\u56fdUS Digital Corporation HD25A \u9ad8\u6027\u80fd\u5de5\u4e1a\u7ea7\u575a\u56fa\u578b\u91d1\u5c5e\u5149\u5b66\u7f16\u7801\u5668<\/a><\/p>\n<br><div class=\"tagcloud\"><a href=\"https:\/\/www.bihec.com\/usdigitalcorporationproducts\/tag\/e2-%e7%94%b5%e6%9c%ba%e7%bc%96%e7%a0%81%e5%99%a8\/\" class=\"tag-cloud-link tag-link-1 tag-link-position-1\" style=\"font-size: 19.475409836066pt;\" aria-label=\"E2 \u7535\u673a\u7f16\u7801\u5668 (19\u4e2a\u9879\u76ee)\">E2 \u7535\u673a\u7f16\u7801\u5668<\/a>\n<a 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