{"id":13218,"date":"2026-09-25T23:19:31","date_gmt":"2026-09-25T20:19:31","guid":{"rendered":"https:\/\/global.tab-tv.com\/cn\/?p=13218"},"modified":"2026-09-25T23:19:33","modified_gmt":"2026-09-25T20:19:33","slug":"usb-5v-0-5a%e3%80%811a%e3%80%812a-%e5%92%8c-3a-%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/global.tab-tv.com\/cn\/13218","title":{"rendered":"USB 5V 0.5A\u30011A\u30012A \u548c 3A \u662f\u4ec0\u4e48\u610f\u601d\uff1f"},"content":{"rendered":"\n

USB \u7aef\u53e3\u53ef\u80fd\u4f1a\u6807\u6709 5V 0.5A\u30015V 1A \u6216 5V 2A \u7b49\u6807\u8bc6\u3002\u8fd9\u4e9b\u6570\u5b57\u8868\u793a\u7aef\u53e3\u63d0\u4f9b\u7684\u7535\u538b\u4ee5\u53ca\u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u6700\u5927\u7535\u6d41\u3002\u901a\u8fc7\u8fd9\u4e9b\u53c2\u6570\u8fd8\u53ef\u4ee5\u8ba1\u7b97\u51fa\u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u6700\u5927\u529f\u7387\u3002<\/p>\n\n\n\n

5V \u548c A \u662f\u4ec0\u4e48\u610f\u601d\uff1f<\/strong><\/h2>\n\n\n\n

5V \u662f USB \u7aef\u53e3\u63d0\u4f9b\u7684\u7535\u538b\u3002\u4ee5\u5b89\u57f9\uff08A\uff09\u8868\u793a\u7684\u6570\u503c\u8868\u793a\u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u6700\u5927\u7535\u6d41\u3002<\/p>\n\n\n\n

\u6700\u5927\u529f\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n\n\n\n

\u529f\u7387 = \u7535\u538b \u00d7 \u7535\u6d41<\/strong><\/p>\n\n\n\n

USB \u6807\u8bc6<\/th>\u6700\u5927\u7535\u6d41<\/th>\u6700\u5927\u529f\u7387<\/th>\u5178\u578b\u7528\u9014<\/th><\/tr><\/thead>
5V 0.5A<\/td>0.5A<\/td>2.5W<\/td>USB \u95ea\u5b58\u76d8\u3001\u952e\u76d8\u3001\u9f20\u6807\u4ee5\u53ca\u5176\u4ed6\u4f4e\u529f\u8017\u8bbe\u5907<\/td><\/tr>
5V 1A<\/td>1A<\/td>5W<\/td>\u4e00\u4e9b\u5916\u7f6e\u786c\u76d8\u3001USB \u96c6\u7ebf\u5668\u4ee5\u53ca\u5176\u4ed6\u529f\u8017\u8f83\u9ad8\u7684 USB \u8bbe\u5907<\/td><\/tr>
5V 2A<\/td>2A<\/td>10W<\/td>\u6d41\u5a92\u4f53\u8bbe\u5907\u3001\u4e00\u4e9b\u5916\u7f6e\u5b58\u50a8\u8bbe\u5907\u4ee5\u53ca\u667a\u80fd\u624b\u673a\u5145\u7535<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u8fd9\u4e9b\u53ea\u662f\u5178\u578b\u793a\u4f8b\uff1b\u5b9e\u9645\u6240\u9700\u529f\u7387\u53d6\u51b3\u4e8e\u5177\u4f53\u8bbe\u5907\uff0c\u5e76\u4e14\u53ef\u80fd\u5b58\u5728\u8f83\u5927\u5dee\u5f02\u3002<\/p>\n\n\n\n

0.5 A \u7684\u7aef\u53e3\u901a\u5e38\u8db3\u4ee5\u4e3a USB \u95ea\u5b58\u76d8\u3001\u952e\u76d8\u548c\u9f20\u6807\u7b49\u7b80\u5355 USB \u914d\u4ef6\u4f9b\u7535\uff1b\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u4e3a\u4f4e\u529f\u8017\u8bbe\u5907\u5145\u7535\uff0c\u4f8b\u5982\u9065\u63a7\u5668\uff08\u5982\u4e09\u661f\u9065\u63a7\u5668\uff09\u548c\u84dd\u7259\u8033\u673a\u30021 A \u7684\u7aef\u53e3\u53ef\u4ee5\u63d0\u4f9b\u66f4\u5927\u7684\u529f\u7387\uff0c\u53ef\u80fd\u9002\u7528\u4e8e\u4e00\u4e9b\u5916\u7f6e\u786c\u76d8\u7b49\u8bbe\u5907\u30022 A \u7684\u7aef\u53e3\u6700\u9ad8\u53ef\u63d0\u4f9b 10 W \u529f\u7387\uff0c\u53ef\u7528\u4e8e\u4e00\u4e9b\u5bf9\u529f\u7387\u8981\u6c42\u8f83\u9ad8\u7684\u8bbe\u5907\uff0c\u5305\u62ec\u90e8\u5206\u6d41\u5a92\u4f53\u8bbe\u5907\uff0c\u4e5f\u53ef\u4ee5\u7528\u4e8e\u4e3a\u667a\u80fd\u624b\u673a\u5145\u7535\u3002<\/p>\n\n\n\n

\u7aef\u53e3\u6807\u8bc6\u4e2d\u5217\u51fa\u7684\u7535\u6d41\u503c\u662f\u8be5\u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u6700\u5927\u7535\u6d41\u3002\u60a8\u4e5f\u53ef\u4ee5\u5c06\u4f4e\u529f\u8017\u8bbe\u5907\u8fde\u63a5\u5230\u989d\u5b9a\u7535\u6d41\u66f4\u9ad8\u7684\u7aef\u53e3\uff1b\u8bbe\u5907\u53ea\u4f1a\u6839\u636e\u81ea\u8eab\u9700\u8981\u83b7\u53d6\u76f8\u5e94\u7684\u7535\u6d41\u3002<\/p>\n\n\n\n

\u4e3a\u4ec0\u4e48 USB \u7aef\u53e3\u7684\u989d\u5b9a\u7535\u6d41\u4ece 0.5 A \u589e\u52a0\u5230\u4e86 3 A\uff1f<\/strong><\/h2>\n\n\n\n

\u6700\u521d\uff0cUSB \u4e3b\u8981\u88ab\u8bbe\u8ba1\u4e3a\u6570\u636e\u4f20\u8f93\u63a5\u53e3\uff0c\u80fd\u591f\u63d0\u4f9b\u7684\u529f\u7387\u76f8\u5bf9\u8f83\u4f4e\u3002\u5728 USB 2.0 \u6807\u51c6\u4e2d\uff0c\u6807\u51c6\u9ad8\u529f\u7387 USB \u7aef\u53e3\u6700\u9ad8\u53ef\u4ee5\u63d0\u4f9b 500 mA\uff080.5 A\uff09\u7684\u7535\u6d41\u3002\u8fd9\u4e2a\u7535\u6d41\u8db3\u4ee5\u4e3a\u8ba1\u7b97\u673a\u9f20\u6807\u3001\u952e\u76d8\u548c\u95ea\u5b58\u76d8\u7b49\u5916\u8bbe\u4f9b\u7535\u3002<\/p>\n\n\n\n

\u968f\u7740 USB \u88ab\u5e7f\u6cdb\u7528\u4e8e\u4e3a\u5916\u7f6e\u786c\u76d8\u3001\u591a\u5a92\u4f53\u8bbe\u5907\u3001\u667a\u80fd\u624b\u673a\u548c\u5176\u4ed6\u8bbe\u5907\u4f9b\u7535\uff0c\u5177\u6709\u66f4\u9ad8\u989d\u5b9a\u7535\u6d41\u7684\u7aef\u53e3\u53d8\u5f97\u8d8a\u6765\u8d8a\u666e\u904d\u3002\u8fd9\u4e9b\u7aef\u53e3\u5df2\u7ecf\u53ef\u4ee5\u7528\u4e8e\u8fde\u63a5\u548c\u4e3a\u624b\u673a\u5145\u7535\u3002<\/p>\n\n\n\n

\u7528\u4e8e\u8fde\u63a5\u9ad8\u529f\u8017\u8bbe\u5907\u7684\u8bbe\u5907\u4e5f\u5f00\u59cb\u914d\u5907 2A \u7aef\u53e3\uff1b\u4f8b\u5982\uff0c\u4e00\u4e9b\u7535\u89c6\u578b\u53f7\u4e0a\u53ef\u4ee5\u627e\u5230\u8fd9\u79cd\u7aef\u53e3\uff0c\u800c 3A \u7aef\u53e3\u901a\u5e38\u5b89\u88c5\u5728\u7528\u4e8e\u5feb\u901f\u4e3a\u8bbe\u5907\u5145\u7535\u7684\u5145\u7535\u7ad9\u4e2d\u3002<\/p>\n\n\n\n

USB 2.0 \u662f\u4e00\u79cd USB \u63a5\u53e3\u89c4\u8303\uff0c\u5177\u4f53\u6765\u8bf4\uff0c\u5b83\u662f\u6839\u636e\u6570\u636e\u4f20\u8f93\u901f\u7387\u5b9a\u4e49\u7684\u7aef\u53e3\u7248\u672c\u30020.5 A \u8fd9\u4e00\u6570\u503c\u8868\u793a\u6807\u51c6 USB 2.0 \u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u7535\u6d41\u3002<\/p>\n\n\n\n

USB Type-C \u7aef\u53e3\u5177\u6709\u66f4\u9ad8\u7a0b\u5ea6\u7684\u6807\u51c6\u5316\uff0c\u53ef\u4ee5\u652f\u6301\u4e0d\u540c\u7684\u7535\u6d41\u548c\u7535\u538b\uff1b\u4f8b\u5982\uff0c\u6839\u636e\u5177\u4f53\u578b\u53f7\uff0c\u8fd9\u7c7b\u7aef\u53e3\u652f\u6301\u6700\u9ad8 100W \u7684\u529f\u7387\uff0c\u5e76\u5e7f\u6cdb\u7528\u4e8e\u7b14\u8bb0\u672c\u7535\u8111\u3002<\/p>\n\n\n\n

\u60a8\u53ef\u4ee5\u901a\u8fc7 USB \u7aef\u53e3\u4e3a\u667a\u80fd\u624b\u673a\u5145\u7535\uff0c\u4f46\u9700\u8981\u6ce8\u610f\uff0c\u73b0\u4ee3\u8bbe\u5907\u901a\u5e38\u9700\u8981\u76f8\u5bf9\u8f83\u9ad8\u7684\u7535\u6d41\uff0c\u901a\u5e38\u4ee5 2 A \u6216\u66f4\u9ad8\u7684\u7535\u6d41\u8fdb\u884c\u5145\u7535\u3002\u867d\u7136\u4f7f\u7528\u529f\u7387\u8f83\u4f4e\u7684\u7aef\u53e3\u4e5f\u53ef\u4ee5\u5145\u7535\uff0c\u4f46\u5145\u7535\u65f6\u95f4\u4f1a\u66f4\u957f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

USB \u7aef\u53e3\u53ef\u80fd\u4f1a\u6807\u6709 5V 0.5A\u30015V 1A \u6216 5V 2A \u7b49\u6807\u8bc6\u3002\u8fd9\u4e9b\u6570\u5b57\u8868\u793a\u7aef\u53e3\u63d0\u4f9b\u7684\u7535\u538b\u4ee5\u53ca\u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u6700\u5927\u7535\u6d41\u3002\u901a\u8fc7\u8fd9\u4e9b\u53c2\u6570\u8fd8\u53ef\u4ee5\u8ba1\u7b97\u51fa\u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u6700\u5927\u529f\u7387\u3002 5V \u548c A \u662f\u4ec0\u4e48\u610f\u601d\uff1f 5V \u662f USB \u7aef\u53e3\u63d0\u4f9b\u7684\u7535\u538b\u3002\u4ee5\u5b89\u57f9\uff08A\uff09\u8868\u793a\u7684\u6570\u503c\u8868\u793a\u7aef\u53e3\u80fd\u591f\u63d0\u4f9b\u7684\u6700\u5927\u7535\u6d41\u3002 \u6700\u5927\u529f\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a \u529f\u7387 = \u7535\u538b \u00d7 \u7535\u6d41 USB \u6807\u8bc6 \u6700\u5927\u7535\u6d41 \u6700\u5927\u529f\u7387 \u5178\u578b\u7528\u9014 5V 0.5A 0.5A 2.5W USB \u95ea\u5b58\u76d8\u3001\u952e\u76d8\u3001\u9f20\u6807\u4ee5\u53ca\u5176\u4ed6\u4f4e\u529f\u8017\u8bbe\u5907 5V 1A 1A 5W \u4e00\u4e9b\u5916\u7f6e\u786c\u76d8\u3001USB \u96c6\u7ebf\u5668\u4ee5\u53ca\u5176\u4ed6\u529f\u8017\u8f83\u9ad8\u7684 USB \u8bbe\u5907 5V 2A 2A 10W \u6d41\u5a92\u4f53\u8bbe\u5907\u3001\u4e00\u4e9b\u5916\u7f6e\u5b58\u50a8\u8bbe\u5907\u4ee5\u53ca\u667a\u80fd\u624b\u673a\u5145\u7535 \u8fd9\u4e9b\u53ea\u662f\u5178\u578b\u793a\u4f8b\uff1b\u5b9e\u9645\u6240\u9700\u529f\u7387\u53d6\u51b3\u4e8e\u5177\u4f53\u8bbe\u5907\uff0c\u5e76\u4e14\u53ef\u80fd\u5b58\u5728\u8f83\u5927\u5dee\u5f02\u3002 0.5 A \u7684\u7aef\u53e3\u901a\u5e38\u8db3\u4ee5\u4e3a USB \u95ea\u5b58\u76d8\u3001\u952e\u76d8\u548c\u9f20\u6807\u7b49\u7b80\u5355 USB \u914d\u4ef6\u4f9b\u7535\uff1b\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u4e3a\u4f4e\u529f\u8017\u8bbe\u5907\u5145\u7535\uff0c\u4f8b\u5982\u9065\u63a7\u5668\uff08\u5982\u4e09\u661f\u9065\u63a7\u5668\uff09\u548c\u84dd\u7259\u8033\u673a\u30021 […]<\/p>\n","protected":false},"author":1,"featured_media":13219,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[85],"tags":[],"class_list":["post-13218","post","type-post","status-publish","format-standard","has-post-thumbnail","category-85"],"_links":{"self":[{"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/posts\/13218","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/comments?post=13218"}],"version-history":[{"count":1,"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/posts\/13218\/revisions"}],"predecessor-version":[{"id":13220,"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/posts\/13218\/revisions\/13220"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/media\/13219"}],"wp:attachment":[{"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/media?parent=13218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/categories?post=13218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/global.tab-tv.com\/cn\/wp-json\/wp\/v2\/tags?post=13218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}