{"id":12345,"date":"2014-01-01T00:00:00","date_gmt":"2014-01-01T08:00:00","guid":{"rendered":"https:\/\/www.hmc.edu\/clinic\/2014\/characterization-of-acoustic-noise-generated-by-capacitors-on-printed-circuit-boards\/"},"modified":"2014-01-01T00:00:00","modified_gmt":"2014-01-01T08:00:00","slug":"characterization-of-acoustic-noise-generated-by-capacitors-on-printed-circuit-boards","status":"publish","type":"post","link":"https:\/\/www.hmc.edu\/clinic\/2014\/characterization-of-acoustic-noise-generated-by-capacitors-on-printed-circuit-boards\/","title":{"rendered":"Characterization of Acoustic Noise Generated by Capacitors on Printed Circuit Boards"},"content":{"rendered":"<h2 class=\"project-sponsor-dept-year\"><span class=\"project-sponsor\">Project A Cappella<\/span> <span class=\"project-dept-year\">Engineering, 2013-14<\/span><\/h2>\n<div class=\"project-team\">\n<p><strong>Liaison(s):<\/strong> Amanda Rainer &#8217;06,  Jeff Thoma,  Shawn Arnold<br \/>\n<strong>Advisor(s):<\/strong> R. Erik Spjut<br \/>\n<strong>Students(s):<\/strong> David Derry (TL-F),  Margaret Thompson (TL-S),  Dong-hyeon Park,  Eric Kiss (F),  Sachit Sood,  Andrew Wells (S)<\/p>\n<\/div>\n<div class=\"project-abstract\">\n<p>Audible acoustic noise generated by multilayer ceramic chip (MLCC) capacitors on printed circuit boards (PCBs) creates an undesirable phenomenon in consumer electronics. When a changing voltage is applied to MLCC capacitors, the internal ceramic material expands and contracts due to piezoelectric and electrostrictive effects causing the PCB to vibrate at audible frequencies. The Project A Cappella clinic team has characterized how placement and electrical stimulus affect the magnitude of the acoustic noise to inform future PCB design choices.<\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Project A Cappella Engineering, 2013-14 Liaison(s): Amanda Rainer &#8217;06, Jeff Thoma, Shawn Arnold Advisor(s): R. Erik Spjut Students(s): David Derry [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[164],"tags":[316],"class_list":["post-12345","post","type-post","status-publish","format-standard","hentry","category-engineering","tag-project-a-cappella"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/posts\/12345","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/comments?post=12345"}],"version-history":[{"count":0,"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/posts\/12345\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/media?parent=12345"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/categories?post=12345"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.hmc.edu\/clinic\/wp-json\/wp\/v2\/tags?post=12345"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}