{"id":778,"date":"2011-06-13T18:18:34","date_gmt":"2011-06-13T23:18:34","guid":{"rendered":"http:\/\/abrammorphew.com\/notes\/?p=778"},"modified":"2017-08-31T12:20:46","modified_gmt":"2017-08-31T17:20:46","slug":"lm386-square-wave-oscillator","status":"publish","type":"post","link":"http:\/\/abrammorphew.com\/notes\/2011\/06\/13\/lm386-square-wave-oscillator\/","title":{"rendered":"LM386 Square-wave Oscillator"},"content":{"rendered":"<p><a href=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/IMAG1166.jpg\"><img decoding=\"async\" src=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/IMAG1166-300x179.jpg\" alt=\"\" title=\"IMAG1166\" width=\"100%\" class=\"alignnone size-medium wp-image-779\" srcset=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/IMAG1166-300x179.jpg 300w, http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/IMAG1166-1024x612.jpg 1024w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Here&#8217;s a small LM386-based square-wave oscillator built from the following schematic. I replaced the 30k resistor with a 50k Potentiometer from my stash of parts which then, of course, acts as a pitch controller. The following audio is some track recordings made in Ableton 8.0 with a little filter on one track and some reverb the air-raid siren sounding noise. <\/p>\n<audio class=\"wp-audio-shortcode\" id=\"audio-778-1\" preload=\"none\" style=\"width: 100%;\" controls=\"controls\"><source type=\"audio\/mpeg\" src=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/lm386_osc_demo.mp3?_=1\" \/><a href=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/lm386_osc_demo.mp3\">http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/lm386_osc_demo.mp3<\/a><\/audio>\n<p><a href=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/Picture-1.png\"><img decoding=\"async\" src=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/Picture-1-300x283.png\" alt=\"\" title=\"LM386 Square-wave Oscillator\" width=\"100%\" class=\"alignnone size-medium wp-image-782\" srcset=\"http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/Picture-1-300x283.png 300w, http:\/\/abrammorphew.com\/notes\/wp-content\/uploads\/2011\/06\/Picture-1.png 312w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here&#8217;s a small LM386-based square-wave oscillator built from the following schematic. I replaced the 30k resistor with a 50k Potentiometer from my stash of parts which then, of course, acts as a pitch controller. The following audio is some track recordings made in Ableton 8.0 with a little filter on one track and some reverb [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[25,57,20,90,91,92],"class_list":["post-778","post","type-post","status-publish","format-standard","hentry","category-notes","tag-audio","tag-electrical","tag-lm386","tag-oscillator","tag-square","tag-wave"],"_links":{"self":[{"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/posts\/778","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/comments?post=778"}],"version-history":[{"count":9,"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/posts\/778\/revisions"}],"predecessor-version":[{"id":1259,"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/posts\/778\/revisions\/1259"}],"wp:attachment":[{"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/media?parent=778"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/categories?post=778"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/abrammorphew.com\/notes\/wp-json\/wp\/v2\/tags?post=778"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}