{"id":6684,"date":"2025-08-25T03:30:40","date_gmt":"2025-08-25T10:30:40","guid":{"rendered":"https:\/\/universaldatasystems.org\/shop\/?post_type=product&#038;p=6684"},"modified":"2025-08-25T13:58:50","modified_gmt":"2025-08-25T20:58:50","slug":"powerlab-lgps450a-hpc1103-450-450-watts-450w-atx12v-switching-desktop-power-supply","status":"publish","type":"product","link":"https:\/\/universaldatasystems.org\/shop\/product\/powerlab-lgps450a-hpc1103-450-450-watts-450w-atx12v-switching-desktop-power-supply\/","title":{"rendered":"PowerLab LGPS450A HPC1103-450 450 Watts 450W ATX12V Switching Desktop Power Supply"},"content":{"rendered":"<p><span style=\"color: #008000;\"><strong>This is a used PowerLab LGPS450A 450 Watt Power Supply in good working condition (Un-Tested!).<\/strong><\/span><\/p>\n<p><em><strong>This Power Supply cannot be found anywhere on the Internet. It was developed by PowerLab in 2003\/2004, but the company no longer exists.<\/strong><\/em><\/p>\n<div>\n<h3><strong>PowerLab LGPS450A &#8211; Specifications:<\/strong><\/h3>\n<ul>\n<li>Brand: PowerLab<\/li>\n<li>Model: LGPS450A<\/li>\n<li>Part Number: HPC1103-450<\/li>\n<li>DC Output: 450W<\/li>\n<li>Form Factor: ATX<\/li>\n<\/ul>\n<h3><strong>PowerLab LGPS450A &#8211; Connections:<\/strong><\/h3>\n<ul>\n<li>1x 20 + 4-Pin<\/li>\n<li>1x 4-Pin 12V<\/li>\n<li>4x IDE (molex)<\/li>\n<li>1x Floppy<\/li>\n<\/ul>\n<\/div>\n<hr \/>\n<div>\n<h4>There are two main designs for power supplies: a linear power supply and a switching power supply.<\/h4>\n<ul>\n<li><strong>Linear:<\/strong> A linear power supply designs use a transformer to step down the input voltage. Firstly, it rectifies the voltage then turns it into a direct current voltage. Secondly, it filters it again to improve the waveform quality. Also, linear power supplies use linear regulators to maintain a constant voltage at the output. These linear regulators dissipate any extra energy in the form of heat.<\/li>\n<li><strong>Switching:<\/strong> On the other hand, a switching power supply design is a newer methodology developed to solve many of the problems associated with linear power supply design, including transformer size and voltage regulation. Consequently, in switching power supply designs, the input voltage is no longer reduced; instead, it\u2019s rectified and filtered at the input. Then the voltage goes through a chopper, which converts it into a high-frequency pulse train. Once again, filtering and rectifying occurs before the voltage reaches the output.<\/li>\n<\/ul>\n<h3>How Does a Switching Power Supply Work?<\/h3>\n<p style=\"text-align: left;\">As a matter of fact, for many years, linear AC\/DC power supplies have been transforming AC power from the utility grid into DC voltage for running home appliances or lighting. The need for smaller supplies for high-power applications means linear power supplies have become relegated to specific industrial and medical uses, where they are still needed because of their low noise. But switching power supplies have taken over because they are smaller, more efficient, and are capable of handling high power. <strong>Figure 1<\/strong>\u00a0illustrates the general transformation from alternating current (AC) to direct current (DC) in a switching power supply.<\/p>\n<p>&nbsp;<\/p>\n<figure id=\"attachment_5557\" aria-describedby=\"caption-attachment-5557\" style=\"width: 969px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-5557 size-full\" title=\"Isolated Switched Mode ac\/dc Power Supply\" src=\"https:\/\/universaldatasystems.org\/shop\/wp-content\/uploads\/2021\/09\/Isolated-Switched-Mode-ac-dc-Power-Supply-1.png\" alt=\"PowerLab LGPS450A Isolated Switched Mode ac\/dc Power Supply\" width=\"969\" height=\"122\" srcset=\"https:\/\/universaldatasystems.org\/shop\/wp-content\/uploads\/2021\/09\/Isolated-Switched-Mode-ac-dc-Power-Supply-1.png 969w, https:\/\/universaldatasystems.org\/shop\/wp-content\/uploads\/2021\/09\/Isolated-Switched-Mode-ac-dc-Power-Supply-1-600x76.png 600w, https:\/\/universaldatasystems.org\/shop\/wp-content\/uploads\/2021\/09\/Isolated-Switched-Mode-ac-dc-Power-Supply-1-100x13.png 100w, https:\/\/universaldatasystems.org\/shop\/wp-content\/uploads\/2021\/09\/Isolated-Switched-Mode-ac-dc-Power-Supply-1-768x97.png 768w\" sizes=\"auto, (max-width: 969px) 100vw, 969px\" \/><figcaption id=\"caption-attachment-5557\" class=\"wp-caption-text\">Figure 1 &#8211; Isolated Switched Mode ac\/dc Power Supply<\/figcaption><\/figure>\n<\/div>\n<div style=\"text-align: center;\"><\/div>\n<hr \/>\n<div style=\"text-align: center;\"><div class=\"su-button-center\"><a href=\"https:\/\/universaldatasystems.org\/shop\/product-category\/components\/power\/\" class=\"su-button su-button-style-glass\" style=\"color:#FFFFFF;background-color:#2D89EF;border-color:#246ec0;border-radius:5px\" target=\"_self\" title=\"Universal Data Systems Power Supplies\"><span style=\"color:#FFFFFF;padding:6px 16px;font-size:13px;line-height:20px;border-color:#6cadf4;border-radius:5px;text-shadow:0px 0px 8px #000000\"><i class=\"sui sui-superpowers\" style=\"font-size:13px;color:#FFFFFF\"><\/i> UDS Power Supplies<small style=\"padding-bottom:6px;color:#FFFFFF\">Universal Data Systems Power Supplies<\/small><\/span><\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>PowerLab LGPS450A 450 Watts 450W ATX12V Switching Desktop Power Supply<\/p>\n","protected":false},"featured_media":6686,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[37,208],"product_tag":[],"class_list":{"0":"post-6684","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-components","7":"product_cat-power","8":"pa_condition-used","9":"pa_latest-yes","10":"post","12":"first","13":"instock","14":"sale","15":"shipping-taxable","16":"purchasable","17":"product-type-simple","18":"add-to-wishlist-before_image","19":"berocket_lgv_grid","20":"berocket_lgv_list_grid"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>PowerLab LGPS450A 450W 12V Desktop Power Supply - UDS Store<\/title>\n<meta name=\"description\" content=\"PowerLab LGPS450A 450 Watts 450W ATX12V Switching Desktop Power Supply. 1x 20 + 4-Pin; 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