{"id":2897,"date":"2012-05-24T07:28:45","date_gmt":"2012-05-24T14:28:45","guid":{"rendered":"http:\/\/rustybolt.info\/wordpress\/?p=2897"},"modified":"2013-08-17T10:17:51","modified_gmt":"2013-08-17T17:17:51","slug":"2012-05-24","status":"publish","type":"post","link":"https:\/\/rustybolt.info\/wordpress\/?p=2897","title":{"rendered":"2012-05-24 Pic of Supercharged Joule Thief From 2009 watsonseblog"},"content":{"rendered":"

\"\"<\/a>Here’s 2 pictures I posted to my watsonseblog in 2009.\u00a0 They’re a picture of a conventional Joule Thief, and one of my Supercharged Joule Thiefs that I built to make sure that the first one or two were not just accidentally ‘too good to be true’.\u00a0 The Supercharged Joule Thiefs worked so well that at first I thought it was just a fluke.\u00a0 But they all performed much, much better than the conventional JT. You can see the schematic and data here<\/strong><\/a>.<\/p>\n

SJT Circuit Description<\/h3>\n

The circuit is not complicated, almost as simple as the conventional JT.\u00a0 The resistor is a 3.3k, but most of my SJTs use a 1.5k resistor, which gives about the same amount of light as a conventional JT.\u00a0 This resistor depends on the gain of the transistor and how much light you want from the LED.<\/p>\n

The transistor is a BC337-25, which has its printed face towards you.\u00a0 For the PN2222A, 2N4401, etc., the face would be away from you.\u00a0 The diode is an old germanium type, which works okay.\u00a0 Just about any diode will work: 1N4148, 1N914, 1N5817 Schottky diode, or even the base to collector junction of a transistor.\u00a0 The cathode or banded end is on the right.<\/p>\n

The capacitor shown is a “561” or 560 picofarad ceramic disk capacitor.\u00a0 A 680, 820, or 1000 pF capacitor will also work, with 680 probably the best choice.\u00a0 Any type should work, plastic, ceramic or whatever.<\/p>\n

Conventional JT<\/h3>\n

\"\"<\/a>I may have posted these pics earlier.\u00a0 I hope not.\u00a0 So many blogs, not enough time to index them in a list.\u00a0 I did that with my watsonseblog, then it was removed and all that work was gone and wasted.<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Here’s 2 pictures I posted to my watsonseblog in 2009.\u00a0 They’re a picture of a conventional Joule Thief, and one of my Supercharged Joule Thiefs that I built to make sure that the first one or two were not just accidentally ‘too good to be true’.\u00a0 The Supercharged Joule Thiefs worked so well that at <\/p>\n

(Read More…)<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-2897","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\/2897","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=2897"}],"version-history":[{"count":20,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2897\/revisions"}],"predecessor-version":[{"id":3054,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2897\/revisions\/3054"}],"wp:attachment":[{"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rustybolt.info\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}