{"id":491,"date":"2015-02-26T03:14:59","date_gmt":"2015-02-26T03:14:59","guid":{"rendered":"http:\/\/itp.fromjia.com\/?p=491"},"modified":"2015-02-26T03:18:24","modified_gmt":"2015-02-26T03:18:24","slug":"beyond-the-led","status":"publish","type":"post","link":"http:\/\/itp.fromjia.com\/?p=491","title":{"rendered":"Beyond the LED"},"content":{"rendered":"<p>I worked with Sam to build a circuit board\u00a0with an operational amplifier! We used a LM386.<\/p>\n<div id=\"attachment_492\" style=\"width: 460px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/lm386-200.gif\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-492\" class=\"wp-image-492 size-full\" src=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/lm386-200.gif\" alt=\"This is the schematic we breadboarded from. \" width=\"450\" height=\"310\" \/><\/a><p id=\"caption-attachment-492\" class=\"wp-caption-text\">This is the schematic we breadboarded from. There are many other schematics to work from in the LM386 datasheet.<\/p><\/div>\n<div id=\"attachment_493\" style=\"width: 740px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/IMG_4804.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-493\" class=\"size-large wp-image-493\" src=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/IMG_4804-1024x768.jpg\" alt=\"wallah.\" width=\"730\" height=\"548\" srcset=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/IMG_4804-1024x768.jpg 1024w, http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/IMG_4804-300x225.jpg 300w, http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/IMG_4804-1200x900.jpg 1200w, http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/IMG_4804.jpg 2000w\" sizes=\"auto, (max-width: 730px) 100vw, 730px\" \/><\/a><p id=\"caption-attachment-493\" class=\"wp-caption-text\">Wallah<\/p><\/div>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/8RXDpYUPVRE\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<p>The sound quality is far from desirable. Michelle and Eric Rosenthal helped us modify\u00a0the circuit to smooth the signal. We&#8217;ll breadboard the new design and try out the sound quality later.<\/p>\n<div id=\"attachment_494\" style=\"width: 740px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/schematic_board.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-494\" class=\"size-large wp-image-494\" src=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/schematic_board-1024x408.jpg\" alt=\"Schematic and board design from the new design.\" width=\"730\" height=\"291\" srcset=\"http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/schematic_board-1024x408.jpg 1024w, http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/schematic_board-300x119.jpg 300w, http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/schematic_board-1200x478.jpg 1200w, http:\/\/itp.fromjia.com\/wp-content\/uploads\/2015\/02\/schematic_board.jpg 2000w\" sizes=\"auto, (max-width: 730px) 100vw, 730px\" \/><\/a><p id=\"caption-attachment-494\" class=\"wp-caption-text\">Schematic and board design.<\/p><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I worked with Sam to build a circuit board\u00a0with an operational amplifier! We used a LM386. The sound quality is far from desirable. Michelle and Eric Rosenthal helped us modify\u00a0the circuit to smooth the signal. We&#8217;ll breadboard the new design and try out the sound quality later. &nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-491","post","type-post","status-publish","format-standard","hentry","category-circuit-design-and-prototype"],"_links":{"self":[{"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=\/wp\/v2\/posts\/491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=491"}],"version-history":[{"count":3,"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=\/wp\/v2\/posts\/491\/revisions"}],"predecessor-version":[{"id":497,"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=\/wp\/v2\/posts\/491\/revisions\/497"}],"wp:attachment":[{"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=491"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/itp.fromjia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}