{"id":5210,"date":"2012-12-04T13:14:04","date_gmt":"2012-12-04T21:14:04","guid":{"rendered":"http:\/\/rustybolt.info\/wordpress\/?p=5210"},"modified":"2013-11-11T15:46:16","modified_gmt":"2013-11-11T23:46:16","slug":"2012-12-04-tbd","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=5210","title":{"rendered":"2012-12-04 Solderless Joule Thief Uses Air Core Coil"},"content":{"rendered":"<p><a href=\"http:\/\/rustybolt.info\/wordpress\/?attachment_id=6027\" rel=\"attachment wp-att-6027\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-6027\" title=\"DSC_0265S5\" alt=\"\" src=\"http:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/12\/DSC_0265S5-300x199.jpg\" width=\"300\" height=\"199\" srcset=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/12\/DSC_0265S5-300x199.jpg 300w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/12\/DSC_0265S5.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>I took this photo just before Halloween back in 2010, after I made this Joule Thief without solder and without a toroid.\u00a0 It shows that you don&#8217;t have to know how to solder and you don&#8217;t have to have a toroid to make a working Joule Thief &#8211; all you need is a screwdriver.\u00a0 So do your thing and experiment a bit, and see what you can come up with.<\/p>\n<p>Each screw (except for one) has two washers to hold the wires.\u00a0 Putting two or more wires under the screw head without the washers will be difficult and the wires will try to come loose.\u00a0 Two or three washers makes it easier and the wires are held much firmer.\u00a0 The wood block is a piece of solid oak that is about a half inch (12mm) thick.\u00a0 The oak is very hard and the screw holes have to be drilled out before the screws are put in.\u00a0 This also makes it possible to use small screws with a flat end which were used for holding plastic parts together.\u00a0 The screw size is about #3 by 3\/8 inch long, with coarse threads like a sheet metal screw.<\/p>\n<p>The LED is not very bright because it&#8217;s a cheap 3 mm white LED I got from an eBay seller, and it has been used a bit so it has dimmed.\u00a0 Use a decent LED and this circuit will be as bright as a toroid JT.<\/p>\n<p><a href=\"http:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/12\/DSCN1224S3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-medium wp-image-8793\" alt=\"DSCN1224S3\" src=\"http:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/12\/DSCN1224S3-300x225.jpg\" width=\"300\" height=\"225\" srcset=\"https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/12\/DSCN1224S3-300x225.jpg 300w, https:\/\/rustybolt.info\/wordpress\/wp-content\/uploads\/2012\/12\/DSCN1224S3.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>Another Joule Thief I put together is shown in the second photo.\u00a0 This uses the bare wires to wrap around the joints in place of solder.\u00a0 The joints are not as mechanically strong as solder but for a quick experiment they should work okay.\u00a0 If the JT is going to be used, the wire joints may become intermittent or loose.\u00a0 The solder joints are a much better connection.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I took this photo just before Halloween back in 2010, after I made this Joule Thief without solder and without a toroid.\u00a0 It shows that you don&#8217;t have to know how to solder and you don&#8217;t have to have a toroid to make a working Joule Thief &#8211; all you need is a screwdriver.\u00a0 So<a href=\"https:\/\/rustybolt.info\/wordpress\/?p=5210\"> <\/p>\n<p> (Read More&#8230;)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-5210","post","type-post","status-publish","format-standard","hentry","category-joule-thief-smps-dc-dc"],"_links":{"self":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5210","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=5210"}],"version-history":[{"count":16,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5210\/revisions"}],"predecessor-version":[{"id":8800,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/5210\/revisions\/8800"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5210"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5210"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}