{"id":17145,"date":"2026-05-22T14:54:05","date_gmt":"2026-05-22T09:24:05","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=17145"},"modified":"2026-05-22T14:54:06","modified_gmt":"2026-05-22T09:24:06","slug":"simple-temperature-probe-and-thermal-cutoff-for-charger","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/simple-temperature-probe-and-thermal-cutoff-for-charger\/","title":{"rendered":"Simple Temperature Probe and Thermal Cutoff for Charger!"},"content":{"rendered":"<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/XbZ4NOlnW3s?si=MfbTGxou4e2kf-Fs\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\n<p class=\"wp-block-paragraph\">Very simple hobby project using a temperature probe and relay cut off. The cutoff temperature can be set in the relay using the preset push buttons. I have set it in such a way that the charging circuit will be cutoff when the charger temperature reaches 40\u00b0C. This relay can also be set the other way round to start a cooling fan in a radio amplifier when the power transistor reaches a particular temperature.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Very simple hobby project using a temperature probe and relay cut off. The cutoff temperature can be set in the relay using the preset push buttons. I have set it in such a way that the charging circuit will be cutoff when the charger temperature reaches 40\u00b0C. This relay can also be set the other [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":17146,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-17145","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amateur-radio-ham-radio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Simple Temperature Probe and Thermal Cutoff for Charger! - Johnson&#039;s Techworld<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/techworld\/simple-temperature-probe-and-thermal-cutoff-for-charger\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Simple Temperature Probe and Thermal Cutoff for Charger! - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"Very simple hobby project using a temperature probe and relay cut off. The cutoff temperature can be set in the relay using the preset push buttons. I have set it in such a way that the charging circuit will be cutoff when the charger temperature reaches 40\u00b0C. 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