{"id":13876,"date":"2023-08-21T02:58:23","date_gmt":"2023-08-21T02:58:23","guid":{"rendered":"https:\/\/staging.rayzeek.com\/?p=13876"},"modified":"2023-12-26T08:41:14","modified_gmt":"2023-12-26T08:41:14","slug":"what-is-switched-mode-power-supply-smps","status":"publish","type":"post","link":"https:\/\/staging.rayzeek.com\/pt\/glossary\/what-is-switched-mode-power-supply-smps","title":{"rendered":"What is Switched-Mode Power Supply (SMPS)"},"content":{"rendered":"<h2 class=\"wp-block-heading\" id=\"h-what-is-switched-mode-power-supply-smps\">What is Switched-Mode Power Supply (SMPS)<\/h2><p>An SMPS, which stands for Switched-Mode Power Supply, is a type of power supply commonly used in the lighting industry. It is designed to efficiently convert electrical power from one form to another using switching devices like transistors or MOSFETs. Unlike traditional linear power supplies, an SMPS operates at high frequencies, allowing for greater power conversion efficiency and reducing the size and weight of the power supply.<\/p><p>The operation of an SMPS involves several stages:<\/p><div class=\"insert_portfolio_outer_wrapper\"><h3>Get Inspired by Rayzeek Motion Sensor Portfolios.<\/h3><p>Doesn't find what you want? Don't worry. There are always alternate ways to solve your problems. Maybe one of our portfolios can help.<\/p><div class = \"insert_portfolio_buttons\"><div class = \"insert_portfolio_button_wrapper\"><div><a href = \"https:\/\/www.rayzeek.com\/product-category\/motion-sensors\"><p>PIR Motion Sensors<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/motion-sensor-switches\"><p>Motion Sensor Switches<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/occupancy-vacancy-sensors\"><p>Occupancy Sensors<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/products\/rz050\"><p>Air Conditioner Motion Sensor<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/motion-sensor-light-strip\"><p>Motion Sensor Light Strips<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/dc-sensor-dimmer\"><p>Low-voltage DC Motion Sensors\/Dimmers<\/p><\/a><\/div><\/div><div class = \"insert_portfolio_button_wrapper\"><div><a href=\"https:\/\/www.rayzeek.com\/product-category\/wireless-motion-sensors\"><p>Wireless Motion Sensor Kits<\/p><\/a><\/div><\/div><\/div><\/div><ul class=\"wp-block-list\"><li>In the first stage, the incoming AC power is rectified and filtered to produce a DC signal. This is achieved using a rectifier and filtration components, converting the AC power into a usable DC form. <\/li>\n\n<li>The second stage of an SMPS involves high-frequency switching, where a high-frequency switch processes the DC signal, creating a high-frequency pulsating DC signal. This high-frequency operation enables efficient power conversion and further contributes to the compact size and weight of the power supply.<\/li>\n\n<li>The third stage of an SMPS includes a power transformer. The high-voltage DC signal is stepped down to a DC signal of the appropriate level. The transformer plays a crucial role in voltage conversion and isolation, ensuring the output voltage matches the desired level.<\/li>\n\n<li>In the fourth stage, the stepped-down DC signal is rectified and filtered to achieve a steady and constant DC output. This stage is essential for maintaining a stable output voltage, free from fluctuations or noise.<\/li>\n\n<li>The final stage of an SMPS is the control circuitry. This circuitry monitors the output voltage and adjusts the high-frequency switch dynamically to maintain a continuous output stream of the desired voltage. The control circuitry is responsible for regulating the output voltage and keeping it within the specified range.<\/li><\/ul><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\">Frequently Asked Questions<\/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-what-does-the-smps-do\">What Does the SMPS Do<\/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>Like other types of power supply, an SMPS power supply transfers power from an AC outlet to a DC device. However, what distinguishes the SMPS is its capability to regulate the output voltage. It has the ability to adjust the output voltage to ensure a consistent output, regardless of any fluctuations in the load.<\/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-does-smps-mean-in-electrical\">What Does SMPS Mean in Electrical<\/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>Switched-mode power supplies (SMPS), also known as switch mode power supplies, are widely used in electrical systems for efficient power conversion. They take an AC input from the mains voltage and convert it to a low voltage DC output.<\/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-two-types-of-smps\">What Are the Two Types of SMPS<\/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>SMPS can be categorized into two types, which are non-isolated converters and isolated converters, based on their circuit topology.<\/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-is-smps-a-ac-dc-converter\">Is SMPS a AC DC Converter<\/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>In general, an SMPS functions by converting the AC source voltage into a DC voltage through a rectifier and an input filter. Afterward, a chopper is used to &#8220;chop up&#8221; the DC voltage, resulting in a series of square-wave high-frequency pulses (ranging from 20 kHz to 10 MHz) at the input of the transformer primary winding.<\/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-is-smps-necessary\">Is SMPS Necessary<\/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>The primary purpose of a Switched Mode Power Supply (SMPS) is to convert unregulated AC or DC voltage into regulated DC voltage that is suitable for electronic devices such as computers. This conversion is necessary because computers and other electronic items require a stable and efficient power supply.<\/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-does-smps-damage\">Why Does SMPS Damage<\/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>Dirt and foreign substances, such as cigarette smoke and house dust, can cause damage to an SMPS. Additionally, overheating and ventilation failures are common reasons for SMPS failure. To prevent this, it is important to ensure that the ventilation is clear of dust and clutter. It is also advisable to avoid keeping the CPU in an enclosed desk.<\/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-how-do-i-check-my-smps-power-supply\">How Do I Check My SMPS Power Supply<\/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>While voltage measurement can be done easily with the help of an isolation transformer, a more effective method is to utilize a differential probe for high-voltage measurements. Differential probes are equipped with two inputs and are specifically designed to measure the voltage difference between these inputs.<\/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-how-is-smps-different-from-normal-power-supply\">How Is SMPS Different From Normal Power Supply<\/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>An SMPS distinguishes itself from a linear power supply by its method of converting the primary AC voltage into the output DC voltage. Instead of relying on a linear approach, the SMPS employs a power transistor to generate a high-frequency voltage that is subsequently passed through a compact transformer and filtered to eliminate any AC noise.<\/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-which-device-is-used-in-smps\">Which Device Is Used in SMPS<\/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>In SMPS, the inverter utilizes the PWM technique. The inverter&#8217;s output is then converted to dc through the use of a diode rectifier. Since the inverter operates at a high frequency, the ripples on the dc output voltage can be easily filtered out using small filter components.<\/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-which-switch-is-used-in-smps\">Which Switch Is Used in SMPS<\/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>Like other power supplies, an SMPS transfers power from a DC or AC source (often mains power), to DC loads, such as a personal computer, while converting voltage and current characteristics. It utilizes a high-frequency switching converter that converts DC to DC.<\/p><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>An SMPS, which stands for Switched-Mode Power Supply, is a type of power supply commonly used in the lighting industry. It is designed to efficiently convert electrical power from one form to another using switching devices like transistors or MOSFETs.<\/p>","protected":false},"author":4,"featured_media":12860,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"article_term":"","article_term_alternate":"","article_term_def":"","article_hook":"","auto_links":"[{\"keyword\": \"power supply\", \"idxall\": 1, \"keywordtitlesimi\": 0.8463436961174011, \"keywordslugsimi\": 0.8463436961174011, \"paratitlesimi\": 0.6850572824478149, \"paraslugsimi\": 0.6850572824478149, \"slug\": \"what-is-power-supply\", \"title\": \"What is Power Supply\", \"id\": 14202}, {\"keyword\": \"lighting industry\", \"idxall\": 0, \"keywordtitlesimi\": 0.7885549306869507, \"keywordslugsimi\": 0.7885549306869507, \"paratitlesimi\": 0.5916579633951188, \"paraslugsimi\": 0.5916579633951188, \"slug\": \"tips-for-increasing-the-efficiency-of-commercial-lighting\", \"title\": \"Tips for Increasing the Efficiency of Commercial Lighting\", \"id\": 10327}]","article_topic":"","article_fact_check":"","mt_social_share":"","mt_content_meta":"","mt_glossary_display":"","glossary_heading":"","glossary":"Switched-Mode Power Supply (SMPS)","glossary_alter":"","glossary_def":"","article_task":"","footnotes":""},"categories":[102],"tags":[99],"class_list":["post-13876","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 Switched-Mode Power Supply (SMPS) - 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:\/\/staging.rayzeek.com\/pt\/glossary\/what-is-switched-mode-power-supply-smps\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is Switched-Mode Power Supply (SMPS) - Rayzeek\" \/>\n<meta property=\"og:description\" content=\"An SMPS, which stands for Switched-Mode Power Supply, is a type of power supply commonly used in the lighting industry. 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