{"id":4184,"date":"2012-09-15T09:17:47","date_gmt":"2012-09-15T16:17:47","guid":{"rendered":"http:\/\/rustybolt.info\/wordpress\/?p=4184"},"modified":"2012-10-21T18:06:47","modified_gmt":"2012-10-22T01:06:47","slug":"2012-09-15","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=4184","title":{"rendered":"2012-09-15 Flashlight Made Of ABS Plastic Pipe"},"content":{"rendered":"<p><a href=\"http:\/\/rustybolt.info\/wordpress\/?attachment_id=4642\" rel=\"attachment wp-att-4642\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-4642\" title=\"DSC_0238S2\" src=\"http:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/09\/DSC_0238S2-300x172.jpg\" alt=\"\" width=\"300\" height=\"172\" srcset=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/09\/DSC_0238S2-300x172.jpg 300w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/09\/DSC_0238S2.jpg 834w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>I did this a few years ago and blogged it in my watsonseblog, now gone for more than a year.\u00a0 I guess it&#8217;s about time I did it again.\u00a0 The circuit is the two transistor circuit with a 2SD639 high current transistor for the output &#8211; it&#8217;s the same circuit I used in the <a href=\"http:\/\/rustybolt.info\/wordpress\/?p=1359\">flashlight in this blog<\/a>.\u00a0 It can push a lot of current through the two LEDs connected in series.<a href=\"http:\/\/rustybolt.info\/wordpress\/?attachment_id=4662\" rel=\"attachment wp-att-4662\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-4662\" title=\"DSC_02401S1\" src=\"http:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/09\/DSC_02401S1-300x174.jpg\" alt=\"\" width=\"300\" height=\"174\" srcset=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/09\/DSC_02401S1-300x174.jpg 300w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/09\/DSC_02401S1.jpg 798w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>I don&#8217;t remember where I got the schematic, but it is not the typical two transistor circuit.\u00a0 It does not use a coupling capacitor between the output and input.\u00a0 The resistance values are unusual, too.\u00a0 But it works.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I did this a few years ago and blogged it in my watsonseblog, now gone for more than a year.\u00a0 I guess it&#8217;s about time I did it again.\u00a0 The circuit is the two transistor circuit with a 2SD639 high current transistor for the output &#8211; it&#8217;s the same circuit I used in the flashlight<a href=\"https:\/\/rustybolt.info\/wordpress\/?p=4184\"> <\/p>\n<p> (Read More&#8230;)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,4],"tags":[],"class_list":["post-4184","post","type-post","status-publish","format-standard","hentry","category-flashlight","category-joule-thief-smps-dc-dc"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4184","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4184"}],"version-history":[{"count":11,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4184\/revisions"}],"predecessor-version":[{"id":4746,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/4184\/revisions\/4746"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4184"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4184"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4184"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}