{"id":3685,"date":"2015-06-16T14:02:21","date_gmt":"2015-06-16T14:02:21","guid":{"rendered":"http:\/\/www.swatlibraries.org\/projects\/speed\/anna\/2015\/06\/16\/back-emf-spark\/"},"modified":"2024-01-19T19:10:50","modified_gmt":"2024-01-19T19:10:50","slug":"back-emf-spark","status":"publish","type":"post","link":"https:\/\/demos.swarthmore.edu\/physics\/2015\/06\/back-emf-spark\/","title":{"rendered":"Back EMF Spark"},"content":{"rendered":"<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong><span style=\"font-size: xx-large;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"\/physics\/wp-content\/uploads\/sites\/2\/2015\/06\/back-emf-spark-2.jpg\" alt=\"Back EMF Spark Demo Picture\" width=\"422\" height=\"316\" \/><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"\/physics\/wp-content\/uploads\/sites\/2\/2015\/06\/back-emf-spark-3.jpg\" alt=\"Back EMF Spark Demo Picture 2\" width=\"422\" height=\"316\" \/><\/span><\/strong><\/p>\n<ul>\n<li><span style=\"font-size: large;\">Apply 40 volts across step-up transformer. When connection<br \/>\nis broken, back emf causes large spark.<\/span><\/li>\n<li><span style=\"font-size: large;\">See Jim for location of power supply and transformer. <\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp; &nbsp; Apply 40 volts across step-up transformer. When connection is broken, back emf causes large spark. See Jim for location of power supply and transformer. &nbsp; &nbsp; &nbsp;<\/p>\n","protected":false},"author":4,"featured_media":4531,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[44,4],"tags":[461,505],"_links":{"self":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/3685"}],"collection":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/comments?post=3685"}],"version-history":[{"count":1,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/3685\/revisions"}],"predecessor-version":[{"id":5364,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/posts\/3685\/revisions\/5364"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media\/4531"}],"wp:attachment":[{"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/media?parent=3685"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/categories?post=3685"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/demos.swarthmore.edu\/physics\/wp-json\/wp\/v2\/tags?post=3685"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}