{"id":271,"date":"2019-12-10T15:06:17","date_gmt":"2019-12-10T15:06:17","guid":{"rendered":"http:\/\/darylwhite.net\/?p=271"},"modified":"2020-01-21T15:29:07","modified_gmt":"2020-01-21T15:29:07","slug":"thyristor-switching","status":"publish","type":"post","link":"https:\/\/darylwhite.net\/index.php\/2019\/12\/10\/thyristor-switching\/","title":{"rendered":"Thyristor switching"},"content":{"rendered":"\n<p>The original coilgun circuit used a relay which quickly suffered from contact problems due to the large current flow so I have replaced it with a thyristor.<\/p>\n\n\n\n<p>I&#8217;m using a  FS2514MH thyristor with an non-repetitive on-state current rating of 330A.<\/p>\n\n\n\n<p>Datasheet: <a href=\"https:\/\/www.fagorelectronica.com\/images\/download\/semiconductor\/fs25st.pdf\">https:\/\/www.fagorelectronica.com\/images\/download\/semiconductor\/fs25st.pdf<\/a><\/p>\n\n\n\n<p>I took the oportunity during testing to record the current waveform using a LEM PR1235 current probe.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"503\" src=\"https:\/\/darylwhite.net\/wp-content\/uploads\/2020\/01\/large_current_probe1.png\" alt=\"\" class=\"wp-image-316\" srcset=\"https:\/\/darylwhite.net\/wp-content\/uploads\/2020\/01\/large_current_probe1.png 800w, https:\/\/darylwhite.net\/wp-content\/uploads\/2020\/01\/large_current_probe1-300x189.png 300w, https:\/\/darylwhite.net\/wp-content\/uploads\/2020\/01\/large_current_probe1-768x483.png 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n\n<p>As you can see, the peak current is 216A.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The original coilgun circuit used a relay which quickly suffered from contact problems due to the large current flow so I have replaced it with a thyristor. I&#8217;m using a FS2514MH thyristor with an non-repetitive on-state current rating of 330A. Datasheet: https:\/\/www.fagorelectronica.com\/images\/download\/semiconductor\/fs25st.pdf I took the oportunity during testing to record the current waveform using a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-271","post","type-post","status-publish","format-standard","hentry","category-coil-gun"],"_links":{"self":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/271","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/comments?post=271"}],"version-history":[{"count":6,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/271\/revisions"}],"predecessor-version":[{"id":318,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/posts\/271\/revisions\/318"}],"wp:attachment":[{"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/media?parent=271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/categories?post=271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/darylwhite.net\/index.php\/wp-json\/wp\/v2\/tags?post=271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}