{"id":2238,"date":"2023-02-16T20:20:28","date_gmt":"2023-02-16T19:20:28","guid":{"rendered":"https:\/\/helpmyphysics.co.uk\/wordpress\/?p=2238"},"modified":"2023-02-16T20:20:28","modified_gmt":"2023-02-16T19:20:28","slug":"cool-down-with-a-thermistor","status":"publish","type":"post","link":"https:\/\/helpmyphysics.co.uk\/wordpress\/?p=2238","title":{"rendered":"Cool down with a thermistor!"},"content":{"rendered":"<p><a href=\"http:\/\/www.helpmyphysics.co.uk\/html5animations\/ThermistorStuff\/ThermistorCircuit.html\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/helpmyphysics.co.uk\/wordpress\/wp-content\/uploads\/2023\/02\/thermistorpic-300x212.jpg\" alt=\"\" width=\"300\" height=\"212\" class=\"aligncenter size-medium wp-image-2239\" srcset=\"https:\/\/helpmyphysics.co.uk\/wordpress\/wp-content\/uploads\/2023\/02\/thermistorpic-300x212.jpg 300w, https:\/\/helpmyphysics.co.uk\/wordpress\/wp-content\/uploads\/2023\/02\/thermistorpic.jpg 678w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>A thermistor is a resistor whose resistance changes with temperature.<br \/>\nWhen it becomes cold its resistance gets bigger. When it becomes hot its resistance becomes smaller.<\/p>\n<p>Check the voltages across the voltage divider.<br \/>\nThe mosfet acts like a switch. When the voltage at its gate becomes bigger than 2 volts it will switch on the relay which in turn switches the fan on.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A thermistor is a resistor whose resistance changes with temperature. When it becomes cold its resistance gets bigger. When it becomes hot its resistance becomes smaller. Check the voltages across the voltage divider. The mosfet acts like a switch. When the voltage at its gate becomes bigger than 2 volts it will switch on the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16,36,15],"tags":[],"class_list":["post-2238","post","type-post","status-publish","format-standard","hentry","category-physicsnational4","category-physicsnational5","category-standard-grade-physics"],"_links":{"self":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2238","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2238"}],"version-history":[{"count":2,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2238\/revisions"}],"predecessor-version":[{"id":2241,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2238\/revisions\/2241"}],"wp:attachment":[{"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2238"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2238"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/helpmyphysics.co.uk\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2238"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}