{"id":13321,"date":"2023-08-01T04:03:50","date_gmt":"2023-08-01T04:03:50","guid":{"rendered":"https:\/\/www.rayzeek.com\/?p=13321"},"modified":"2023-12-26T08:37:52","modified_gmt":"2023-12-26T08:37:52","slug":"what-is-direct-current-dc","status":"publish","type":"post","link":"https:\/\/www.rayzeek.com\/zh_hk\/%e6%9c%af%e8%af%ad%e8%a1%a8\/%e4%bb%80%e4%b9%88%e6%98%af%e7%9b%b4%e6%b5%81%e7%94%b5","title":{"rendered":"\u4ec0\u4e48\u662f\u76f4\u6d41\u7535\uff08DC\uff09"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-direct-current-dc\">\u4ec0\u4e48\u662f\u76f4\u6d41\u7535\uff08DC\uff09<\/h2><p>\u76f4\u6d41\u7535\uff08DC\uff09\u662f\u4e00\u79cd\u4e0d\u6539\u53d8\u6781\u6027\u3001\u5355\u5411\u6d41\u52a8\u7684\u7535\u6d41\u3002\u4e0e\u5468\u671f\u6027\u6539\u53d8\u65b9\u5411\u7684\u4ea4\u6d41\u7535\uff08AC\uff09\u4e0d\u540c\uff0c\u76f4\u6d41\u7535\u63d0\u4f9b\u6052\u5b9a\u7684\u7535\u538b\u6216\u7535\u6d41\u3002\u76f4\u6d41\u7535\u53ef\u4ece\u5404\u79cd\u6765\u6e90\u83b7\u5f97\uff0c\u5982\u7535\u6c60\u3001\u592a\u9633\u80fd\u7535\u6c60\u3001\u71c3\u6599\u7535\u6c60\u548c\u6539\u88c5\u7684\u4ea4\u6d41\u53d1\u7535\u673a\u3002\u76f4\u6d41\u7535\u56e0\u5176\u7535\u538b\u8f93\u51fa\u7684\u4e00\u81f4\u6027\u800c\u95fb\u540d\uff0c\u56e0\u6b64\u6210\u4e3a\u8bb8\u591a\u7535\u5b50\u8bbe\u5907\u7684\u9996\u9009\u3002\u8fd9\u4e9b\u8bbe\u5907\u901a\u5e38\u4f9d\u8d56\u7535\u6c60\u7b49\u76f4\u6d41\u7535\u6e90\u3002<\/p><div class=\"insert_portfolio_outer_wrapper\"><h3>\u4ece Rayzeek 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href=\"https:\/\/www.rayzeek.com\/zh_hk\/%e4%ba%a7%e5%93%81%e7%b1%bb%e5%88%ab\/%e6%97%a0%e7%ba%bf%e8%bf%90%e5%8a%a8%e4%bc%a0%e6%84%9f%e5%99%a8\"><p>\u65e0\u7ebf\u8fd0\u52a8\u4f20\u611f\u5668\u5957\u4ef6<\/p><\/a><\/div><\/div><\/div><\/div><p>\u76f4\u6d41\u7535\u4e5f\u53ef\u4ee5\u901a\u8fc7\u6574\u6d41\u5668\u4ece\u4ea4\u6d41\u7535\u4e2d\u4ea7\u751f\uff0c\u6574\u6d41\u5668\u5c06\u4ea4\u6d41\u7535\u8f6c\u6362\u4e3a\u76f4\u6d41\u7535\u3002\u901a\u8fc7\u8fd9\u4e00\u8f6c\u6362\u8fc7\u7a0b\uff0c\u7535\u5b50\u8bbe\u5907\u53ef\u5c06\u63d2\u5ea7\u63d0\u4f9b\u7684\u4ea4\u6d41\u7535\u8f6c\u6362\u4e3a\u6240\u9700\u7684\u76f4\u6d41\u7535\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528\u53d8\u538b\u5668\u6765\u8c03\u6574\u76f4\u6d41\u7535\u7684\u7535\u538b\u6c34\u5e73\uff0c\u4ee5\u6ee1\u8db3\u8bbe\u5907\u7684\u8981\u6c42\u3002\u5e76\u975e\u6240\u6709\u7535\u6c14\u8bbe\u5907\u90fd\u4f7f\u7528\u76f4\u6d41\u7535\u3002\u8bb8\u591a\u5bb6\u7528\u7535\u5668\uff0c\u5982\u7535\u706f\u3001\u6d17\u8863\u673a\u548c\u51b0\u7bb1\uff0c\u90fd\u662f\u4f7f\u7528\u7531\u7535\u7f51\u76f4\u63a5\u63d0\u4f9b\u7684\u4ea4\u6d41\u7535\u6e90\u3002<\/p><div class=\"wp-block-group glossary_faqs\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h2 class=\"wp-block-heading\" id=\"h-frequently-asked-questions\">\u5e38\u898b\u554f\u984c<\/h2>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-can-you-run-a-house-on-dc-power\">\u4f60\u80fd\u7528\u76f4\u6d41\u7535\u8fd0\u884c\u623f\u5c4b\u5417\uff1f<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>\u76f4\u6d41\u7535\u4e0d\u5e38\u7528\u4e8e\u4f4f\u5b85\u7684\u539f\u56e0\u53ef\u4ee5\u8ffd\u6eaf\u5230\u76f4\u6d41\u7535\u4e0e\u4ea4\u6d41\u7535\u76f8\u6bd4\u6240\u56fa\u6709\u7684\u7279\u6027\u548c\u5c40\u9650\u6027\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u4ea4\u6d41\u7535\u5177\u6709\u6613\u4e8e\u8fdc\u8ddd\u79bb\u4f20\u8f93\u4e14\u635f\u8017\u6781\u5c0f\u7684\u4f18\u70b9\u3002\u6b64\u5916\uff0c\u5728\u76f8\u540c\u7535\u538b\u4e0b\u76f4\u63a5\u63a5\u89e6\u4ea4\u6d41\u7535\u88ab\u8ba4\u4e3a\u66f4\u5b89\u5168\u3002<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-why-dc-current-is-not-used-in-homes\">\u4e3a\u4ec0\u4e48\u5bb6\u5ead\u4e2d\u4e0d\u4f7f\u7528\u76f4\u6d41\u7535\uff1f<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>\u7531\u4e8e\u591a\u79cd\u539f\u56e0\uff0c\u76f4\u6d41\u7535\u5728\u5bb6\u5ead\u4e2d\u5e76\u4e0d\u5e38\u7528\u3002\u9996\u5148\uff0c\u4ea7\u751f\u76f4\u6d41\u7535\u5177\u6709\u6311\u6218\u6027\uff0c\u56e0\u4e3a\u76f4\u6d41\u7535\u4e3b\u8981\u7531\u7535\u6c60\u548c\u7535\u5316\u5b66\u6216\u5149\u4f0f\u7535\u6c60\u4ea7\u751f\u3002\u6b64\u5916\uff0c\u4e0e\u4ea4\u6d41\u7535\u76f8\u6bd4\uff0c\u76f4\u6d41\u7535\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u529f\u7387\u635f\u8017\u66f4\u5927\u3002<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-happens-when-an-led-is-directly-connected-to-a-power-supply\">LED \u4e0e\u7535\u6e90\u76f4\u63a5\u8fde\u63a5\u65f6\u4f1a\u53d1\u751f\u4ec0\u4e48\u60c5\u51b5<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>\u5982\u679c\u5c06 LED \u76f4\u63a5\u8fde\u63a5\u5230\u7535\u6e90\u4e0a\uff0c\u5b83\u5c06\u8bd5\u56fe\u8017\u6563\u5176\u5141\u8bb8\u6d88\u8017\u7684\u6700\u5927\u529f\u7387\u3002\u7136\u800c\uff0c\u8fd9\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5176\u81ea\u8eab\u635f\u574f\u3002\u56e0\u6b64\uff0c\u8c03\u8282\u548c\u9650\u5236\u6d41\u7ecf LED \u7684\u7535\u6d41\u81f3\u5173\u91cd\u8981\u3002<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-can-leds-work-on-both-ac-and-dc\">LED \u80fd\u5426\u5728\u4ea4\u6d41\u7535\u548c\u76f4\u6d41\u7535\u4e2d\u5de5\u4f5c<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>LED \u706f\u65e2\u80fd\u4f7f\u7528\u4ea4\u6d41\u7535\u6e90\uff0c\u4e5f\u80fd\u4f7f\u7528\u76f4\u6d41\u7535\u6e90\u3002\u4e8b\u5b9e\u4e0a\uff0cLED \u706f\u7684\u5de5\u4f5c\u539f\u7406\u662f\u5c06\u4ea4\u6d41\u7535\u538b\u8f6c\u6362\u4e3a\u7a33\u538b\u76f4\u6d41\u7535\u538b\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u53ea\u8981\u4e32\u8054\u9650\u6d41\u7535\u963b\u5230\u4f4d\uff0c\u4f5c\u4e3a\u4e8c\u6781\u7ba1\u7684\u6bcf\u4e2a LED \u706f\u90fd\u80fd\u5728\u5176\u8bbe\u8ba1\u8303\u56f4\u5185\u540c\u65f6\u4f7f\u7528\u4ea4\u6d41\u7535\u548c\u76f4\u6d41\u7535\u3002<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-will-a-bulb-glow-in-dc-current\">\u706f\u6ce1\u5728\u76f4\u6d41\u7535\u6d41\u4e2d\u4f1a\u53d1\u5149\u5417\uff1f<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>\u5f53\u706f\u6ce1\u548c\u7535\u5bb9\u5668\u4e32\u8054\u5728\u76f4\u6d41\u7535\u6d41\u4e2d\u65f6\uff0c\u706f\u6ce1\u6839\u672c\u4e0d\u4f1a\u53d1\u5149\u3002\u8fd9\u662f\u56e0\u4e3a\u7535\u5bb9\u5668\u5bf9\u76f4\u6d41\u7535\u63d0\u4f9b\u4e86\u65e0\u7a77\u5927\u7684\u7535\u963b\uff0c\u5bfc\u81f4\u6ca1\u6709\u7535\u6d41\u6d41\u52a8\uff0c\u56e0\u6b64\u706f\u6ce1\u4e0d\u4f1a\u53d1\u5149\u3002<\/p><\/div><\/div><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><div class=\"wp-block-group glossary_faq_q\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><h3 class=\"wp-block-heading\" id=\"h-what-are-the-disadvantages-of-dc-electricity\">\u76f4\u6d41\u7535\u6709\u54ea\u4e9b\u7f3a\u70b9<\/h3><\/div><\/div>\n\n<div class=\"wp-block-group glossary_faq_a\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\"><p>\u7535\u80fd\u662f\u901a\u8fc7\u7535\u7ebf\u4f20\u8f93\u7684\uff0c\u5f53\u7535\u80fd\u4ee5\u76f4\u6d41\uff08DC\uff09\u5f62\u5f0f\u4f20\u8f93\u65f6\uff0c\u5927\u91cf\u7535\u80fd\u4f1a\u635f\u8017\u5e76\u8f6c\u5316\u4e3a\u70ed\u91cf\u3002\u8fd9\u79cd\u80fd\u91cf\u635f\u5931\u662f\u4f7f\u7528\u76f4\u6d41\u7535\u7684\u4e3b\u8981\u7f3a\u70b9\u3002<\/p><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>\u76f4\u6d41\u7535\uff08DC\uff09\u662f\u4e00\u79cd\u4e0d\u6539\u53d8\u6781\u6027\u3001\u5355\u5411\u6d41\u52a8\u7684\u7535\u6d41\u3002\u4e0e\u5468\u671f\u6027\u6539\u53d8\u65b9\u5411\u7684\u4ea4\u6d41\u7535\uff08AC\uff09\u4e0d\u540c\uff0c\u76f4\u6d41\u7535\u63d0\u4f9b\u6052\u5b9a\u7684\u7535\u538b\u6216\u7535\u6d41\u3002<\/p>","protected":false},"author":4,"featured_media":12868,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"Alternating Current\", \"idxall\": 0, \"keywordtitlesimi\": 0.907987117767334, \"keywordslugsimi\": 0.8815386295318604, \"paratitlesimi\": 0.7454914450645447, \"paraslugsimi\": 0.694885790348053, \"slug\": \"what-is-alternating-current-ac\", \"title\": \"What is Alternating Current (AC)\", \"id\": 12822}, {\"keyword\": \"electrical current\", \"idxall\": 0, \"keywordtitlesimi\": 0.7831687331199646, \"keywordslugsimi\": 0.7831687331199646, \"paratitlesimi\": 0.6778258085250854, \"paraslugsimi\": 0.6778258085250854, \"slug\": \"what-is-current\", \"title\": \"What is Current\", \"id\": 13544}, {\"keyword\": \"electrical current\", \"idxall\": 0, \"keywordtitlesimi\": 0.7592698931694031, \"keywordslugsimi\": 0.7014175057411194, \"paratitlesimi\": 0.7454914450645447, \"paraslugsimi\": 0.694885790348053, \"slug\": \"what-is-alternating-current-ac\", \"title\": \"What is Alternating Current (AC)\", \"id\": 12822}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Direct Current (Dc)","glossary_alter":"","glossary_def":"Direct Current (DC) is a term used in the lighting industry to describe a type of electrical current that flows in a single direction without changing polarity. Unlike Alternating Current (AC), which periodically changes direction, DC provides a constant voltage or current. It can be obtained from various sources such as batteries, solar cells, fuel cells, and modified alternators. DC power is known for its consistency in voltage delivery, making it a preferred choice for many electronic devices. These devices often rely on DC power sources like batteries.\n\nDC power can also be created from AC power by using a rectifier, which converts AC to DC. This conversion process allows electronic devices to convert the AC power available from outlets into the DC power they require. Additionally, a transformer may be used to adjust the voltage level of the DC power to match the requirements of the device.\n\nIt is important to note that not all electrical devices utilize DC power. Many household appliances, such as lamps, washing machines, and refrigerators, operate on AC power directly supplied from the power grid.\n\nIn summary, Direct Current (DC) in the lighting industry refers to a type of electrical current that flows in a single direction without changing polarity. It can be obtained from sources like batteries, solar cells, fuel cells, and modified alternators. DC power is consistent in voltage delivery and is commonly used in electronic devices, which often rely on DC power sources like batteries. It can also be created from AC power using a rectifier. However, not all electrical devices use DC power, as many household appliances operate on AC power supplied directly from the power grid.","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-13321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossary","tag-glossary"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What is Direct Current (DC) - Rayzeek<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rayzeek.com\/zh_hk\/\u672f\u8bed\u8868\/\u4ec0\u4e48\u662f\u76f4\u6d41\u7535\" \/>\n<meta property=\"og:locale\" content=\"zh_HK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Direct Current (DC) - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"Direct Current (DC) is a type of electrical current that flows in a single direction without changing polarity. 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