{"id":354,"date":"2022-11-10T14:37:23","date_gmt":"2022-11-10T14:37:23","guid":{"rendered":"https:\/\/successrouter.com\/articles\/?p=354"},"modified":"2022-11-10T14:37:39","modified_gmt":"2022-11-10T14:37:39","slug":"filter-circuits","status":"publish","type":"post","link":"https:\/\/successrouter.com\/articles\/filter-circuits\/","title":{"rendered":"Filter circuits"},"content":{"rendered":"<h2 class=\"simpletoc-title\">Table of Contents<\/h2>\n<ul class=\"simpletoc-list\">\n<li><a href=\"#filter-circuits\">Filter circuits:<\/a>\n<ul><li>\n<a href=\"#1-series-inductor-filter\">1. Series inductor filter:<\/a><\/li>\n<li><a href=\"#2-shunt-capacitor-filter\">2. Shunt capacitor filter:<\/a><\/li>\n<\/ul>\n<\/li><\/ul>\n\n<h3 class=\"wp-block-heading\" id=\"filter-circuits\">Filter circuits:<\/h3>\n\n\n<p>The output obtained from a junction diode rectifier is unidirectional but pulsating. Such a signal can be considered as the sum of a d.c. signal superimposed with many a.c. signals of different harmonic frequencies. We can obtain d.c. voltage by filtering out the a.c. components. We describe here two simplest filter circuits.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"1-series-inductor-filter\">1. Series inductor filter:<\/h4>\n\n\n<p>Figure shows the circuit of a full wave rectifier with an inductor of inductance L connected in series with its load resistance R<sub>L<\/sub>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"358\" height=\"189\" src=\"https:\/\/successrouter.com\/articles\/wp-content\/uploads\/2022\/11\/image-15.png\" alt=\"\" class=\"wp-image-355\" srcset=\"https:\/\/successrouter.com\/articles\/wp-content\/uploads\/2022\/11\/image-15.png 358w, https:\/\/successrouter.com\/articles\/wp-content\/uploads\/2022\/11\/image-15-300x158.png 300w\" sizes=\"(max-width: 358px) 100vw, 358px\" \/><figcaption>Fig. Full wave rectifier with series inductor filter.<\/figcaption><\/figure><\/div>\n\n\n<p>The inductance L offers a reactance X<sub>L<\/sub> =2\u03c0fL to the flow of current through it. Clearly, it blocks high frequency a.c. component and allows low frequency d.c. component to pass through it. A smooth d.c. voltage appears across the load resistance.<\/p>\n\n\n<h4 class=\"wp-block-heading\" id=\"2-shunt-capacitor-filter\">2. Shunt capacitor filter:<\/h4>\n\n\n<p>Figure shows the circuit of a full wave rectifier with a capacitor of capacitance C connected in parallel with its load resistance R<sub>L<\/sub>.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"417\" height=\"202\" src=\"https:\/\/successrouter.com\/articles\/wp-content\/uploads\/2022\/11\/image-16.png\" alt=\"\" class=\"wp-image-356\" srcset=\"https:\/\/successrouter.com\/articles\/wp-content\/uploads\/2022\/11\/image-16.png 417w, https:\/\/successrouter.com\/articles\/wp-content\/uploads\/2022\/11\/image-16-300x145.png 300w\" sizes=\"(max-width: 417px) 100vw, 417px\" \/><figcaption>Fig. Full wave rectifier with shunt capacitor filter.<\/figcaption><\/figure><\/div>\n\n\n<p>The capacitor has a reactance of high capacitance C offers a low impedance path to high frequency a.c. component but high, almost infinite, impedance to low frequency d.c. component. Hence the a.c. component is bypassed through C or filtered. A smooth d.c. voltage appears at the load resistance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Filter circuits: The output obtained from a junction diode rectifier is unidirectional but pulsating. Such a signal can be considered as the sum of a d.c. signal superimposed with many a.c. signals of different harmonic frequencies. We can obtain d.c. voltage by filtering out the a.c. components. We describe here two simplest filter circuits. 1. &#8230; <a title=\"Filter circuits\" class=\"read-more\" href=\"https:\/\/successrouter.com\/articles\/filter-circuits\/\" aria-label=\"More on Filter circuits\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[84,85,86],"_links":{"self":[{"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/posts\/354"}],"collection":[{"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/comments?post=354"}],"version-history":[{"count":3,"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/posts\/354\/revisions"}],"predecessor-version":[{"id":359,"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/posts\/354\/revisions\/359"}],"wp:attachment":[{"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/media?parent=354"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/categories?post=354"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/successrouter.com\/articles\/wp-json\/wp\/v2\/tags?post=354"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}