{"id":1844,"date":"2024-06-01T03:39:59","date_gmt":"2024-05-31T20:39:59","guid":{"rendered":"https:\/\/www.tneutron.net\/mikro\/?p=1844"},"modified":"2024-05-27T14:07:26","modified_gmt":"2024-05-27T07:07:26","slug":"photo-transistor-as-a-light-sensor","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/","title":{"rendered":"Photo Transistor As A Light Sensor"},"content":{"rendered":"<p><span class=\"notranslate\">The basic circuit that can be used to use Photo Transistors As Light Sensors can use the following simple circuit.<\/span><br \/>\n<span class=\"notranslate\"> <b>1.<\/b> <b>Basic Circuit With HIGH Logic When Detecting Light<\/b><\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002-2.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"clip_image002\" src=\"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002_thumb-2.jpg\" alt=\"clip_image002\" width=\"292\" height=\"213\" border=\"0\" \/><\/a><\/p>\n<p><span class=\"notranslate\"> With the configuration in the first image above the photo transistor is able to provide HIGH logic when receiving light emission.<\/span> <span class=\"notranslate\"> At the receiving light, the collector-emitter foot conductivity value will rise so that Vout gets a voltage source from Vcc through the photo emitter&#8217;s emitter legs so that Vout is HIGH logic and vice versa when not receiving light then the photo transistors OFF and Vout are connected to ground through RL so that LOW .<\/span><\/p>\n<p><span class=\"notranslate\"> Then for the second configuration of figure 1 above.<\/span> <span class=\"notranslate\"> When the photo transistor receives light then the photo transistor conducts so TR1 does not get the base bias so TR1 OFF and Vout HIGH logic.<\/span> <span class=\"notranslate\"> Then when the photo transistor does not receive the light fed photo transistor OFF and base transistor TR1 gets forward biased so TR1 ON and Vout are connected to ground through TR1 so Vout LOGIK logic LOW.<\/span><\/p>\n<p><span class=\"notranslate\"> <b>2.<\/b> <b>Basic Circuits With LOW Logic When Detecting Light<\/b><\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image010-2.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"clip_image010\" src=\"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image010_thumb-2.jpg\" alt=\"clip_image010\" width=\"293\" height=\"211\" border=\"0\" \/><\/a><\/p>\n<p><span class=\"notranslate\"> From the first set of images above when the photo transistors receive the light then the photo transistor ON so that Vout is connected to the ground through the photo transistor so that Vout LOW logic and vice versa when not receive light then the photo transistor OFF and Vout connected to Vcc through RL so HIGH logic.<\/span> <span class=\"notranslate\"> Then for the second configuration of picture 2 above when photo transistor receive light then photo transistor conducts so TR1 gets base bias so TR1 ON and Vout are connected to ground by TR1 so that Vout is logged LOW.<\/span><\/p>\n<p><span class=\"notranslate\"> Then when the photo transistor does not receive the light fed photo transistor OFF and base transistor TR1 does not get forward bias so TR1 OFF and Vout are connected to Vcc through RL so Vout is HIGH logic.<\/span> <span class=\"notranslate\"> If there is time and components can be tried Light Switch With Photo Transistor <b>.<\/b><\/span> <span class=\"notranslate\"> Light switches can be made from several kinds of light sensors.<\/span> <span class=\"notranslate\"> The following series of light switches are made using a light sensor in the form of photo transistors.<\/span><\/p>\n<p><span class=\"notranslate\"> This series of light switches or light-controlled switches is very simple, because it is made with 1 transistor, 1 photo transistor, 1 relay, 1 variable of resistor and diode.<\/span> <span class=\"notranslate\"> This series of light switches can work on voltages 6 &#8211; 12 VDC or DC voltage that match according to the relay used.<\/span> <span class=\"notranslate\"> To set the light reception sensitivity is adjusted with VR1.<\/span> <span class=\"notranslate\"> Circuit Light Switch With Photo Transistor can be used to control multiple lamps in parallel with power depending on the ability of the relay used<\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image013-2.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"clip_image013\" src=\"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image013_thumb-2.jpg\" alt=\"clip_image013\" width=\"244\" height=\"215\" border=\"0\" \/><\/a><\/p>\n<p><span class=\"notranslate\"> Light Switch Series With Photo Transistor above can be used to control the garden lights, street lights, or lights that want to be turned on at night only automatically.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The basic circuit that can be used to use Photo Transistors As Light Sensors can use the following simple circuit. 1. Basic Circuit With HIGH Logic When Detecting Light With the configuration in the first image above the photo transistor is able to provide HIGH logic when receiving light emission. At the receiving light, the &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1238],"tags":[2321,2322,2323,2324,2325,2326,2327,2328,2329,2330,2331,2332,1619,2333,2334,2257,2335,2336],"class_list":["post-1844","post","type-post","status-publish","format-standard","hentry","category-english","tag-ambient-light-phototransistor","tag-ambient-light-phototransistor-circuit","tag-blue-light-phototransistor","tag-light-detector-using-phototransistor","tag-light-phototransistor","tag-light-sensitive-phototransistor","tag-light-sensor-using-phototransistor","tag-light-sensor-using-phototransistor-buildcircuit-com","tag-light-sensor-with-phototransistor","tag-low-light-phototransistor","tag-multisim-phototransistor-light-channel","tag-phototransistor-ambient-light-filter","tag-phototransistor-ambient-light-sensor","tag-phototransistor-for-red-light","tag-phototransistor-for-visible-light","tag-phototransistor-green-light","tag-phototransistor-light","tag-phototransistor-light-current"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Photo Transistor As A Light Sensor - TN Mikro<\/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:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Photo Transistor As A Light Sensor - TN Mikro\" \/>\n<meta name=\"twitter:description\" content=\"The basic circuit that can be used to use Photo Transistors As Light Sensors can use the following simple circuit. 1. Basic Circuit With HIGH Logic When Detecting Light With the configuration in the first image above the photo transistor is able to provide HIGH logic when receiving light emission. At the receiving light, the ...\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002_thumb-2.jpg\" \/>\n<meta name=\"twitter:creator\" content=\"@t_neutron\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Taufiqullah\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/\"},\"author\":{\"name\":\"Taufiqullah\",\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/#\\\/schema\\\/person\\\/b57f791b694136047454bb6ac5cbe375\"},\"headline\":\"Photo Transistor As A Light Sensor\",\"datePublished\":\"2024-05-31T20:39:59+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/\"},\"wordCount\":478,\"image\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2017\\\/09\\\/clip_image002_thumb-2.jpg\",\"keywords\":[\"ambient light phototransistor\",\"ambient light phototransistor circuit\",\"blue light phototransistor\",\"light detector using phototransistor\",\"light phototransistor\",\"light sensitive phototransistor\",\"light sensor using phototransistor\",\"light sensor using phototransistor- buildcircuit.com\",\"light sensor with phototransistor\",\"low light phototransistor\",\"multisim phototransistor light channel\",\"phototransistor ambient light filter\",\"phototransistor ambient light sensor\",\"phototransistor for red light\",\"phototransistor for visible light\",\"phototransistor green light\",\"phototransistor light\",\"phototransistor light current\"],\"articleSection\":[\"English\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/\",\"url\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/\",\"name\":\"Photo Transistor As A Light Sensor - TN Mikro\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2017\\\/09\\\/clip_image002_thumb-2.jpg\",\"datePublished\":\"2024-05-31T20:39:59+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/#\\\/schema\\\/person\\\/b57f791b694136047454bb6ac5cbe375\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2017\\\/09\\\/clip_image002_thumb-2.jpg\",\"contentUrl\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/wp-content\\\/uploads\\\/sites\\\/5\\\/2017\\\/09\\\/clip_image002_thumb-2.jpg\",\"width\":292,\"height\":213},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/photo-transistor-as-a-light-sensor\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Photo Transistor As A Light Sensor\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/#website\",\"url\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/\",\"name\":\"TN Mikro\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.tneutron.net\\\/mikro\\\/#\\\/schema\\\/person\\\/b57f791b694136047454bb6ac5cbe375\",\"name\":\"Taufiqullah\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/dcdf36434717ce57bea7f17eb3c140a2ff8def45941b720aa8fc1cccd6cdd505?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/dcdf36434717ce57bea7f17eb3c140a2ff8def45941b720aa8fc1cccd6cdd505?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/dcdf36434717ce57bea7f17eb3c140a2ff8def45941b720aa8fc1cccd6cdd505?s=96&d=mm&r=g\",\"caption\":\"Taufiqullah\"},\"description\":\"Taufiqullah\",\"sameAs\":[\"http:\\\/\\\/www.tneutron.net\",\"https:\\\/\\\/x.com\\\/t_neutron\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Photo Transistor As A Light Sensor - TN Mikro","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/","twitter_card":"summary_large_image","twitter_title":"Photo Transistor As A Light Sensor - TN Mikro","twitter_description":"The basic circuit that can be used to use Photo Transistors As Light Sensors can use the following simple circuit. 1. Basic Circuit With HIGH Logic When Detecting Light With the configuration in the first image above the photo transistor is able to provide HIGH logic when receiving light emission. At the receiving light, the ...","twitter_image":"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002_thumb-2.jpg","twitter_creator":"@t_neutron","twitter_misc":{"Written by":"Taufiqullah","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/#article","isPartOf":{"@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/"},"author":{"name":"Taufiqullah","@id":"https:\/\/www.tneutron.net\/mikro\/#\/schema\/person\/b57f791b694136047454bb6ac5cbe375"},"headline":"Photo Transistor As A Light Sensor","datePublished":"2024-05-31T20:39:59+00:00","mainEntityOfPage":{"@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/"},"wordCount":478,"image":{"@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/#primaryimage"},"thumbnailUrl":"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002_thumb-2.jpg","keywords":["ambient light phototransistor","ambient light phototransistor circuit","blue light phototransistor","light detector using phototransistor","light phototransistor","light sensitive phototransistor","light sensor using phototransistor","light sensor using phototransistor- buildcircuit.com","light sensor with phototransistor","low light phototransistor","multisim phototransistor light channel","phototransistor ambient light filter","phototransistor ambient light sensor","phototransistor for red light","phototransistor for visible light","phototransistor green light","phototransistor light","phototransistor light current"],"articleSection":["English"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/","url":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/","name":"Photo Transistor As A Light Sensor - TN Mikro","isPartOf":{"@id":"https:\/\/www.tneutron.net\/mikro\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/#primaryimage"},"image":{"@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/#primaryimage"},"thumbnailUrl":"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002_thumb-2.jpg","datePublished":"2024-05-31T20:39:59+00:00","author":{"@id":"https:\/\/www.tneutron.net\/mikro\/#\/schema\/person\/b57f791b694136047454bb6ac5cbe375"},"breadcrumb":{"@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/#primaryimage","url":"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002_thumb-2.jpg","contentUrl":"https:\/\/www.tneutron.net\/mikro\/wp-content\/uploads\/sites\/5\/2017\/09\/clip_image002_thumb-2.jpg","width":292,"height":213},{"@type":"BreadcrumbList","@id":"https:\/\/www.tneutron.net\/mikro\/photo-transistor-as-a-light-sensor\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.tneutron.net\/mikro\/"},{"@type":"ListItem","position":2,"name":"Photo Transistor As A Light Sensor"}]},{"@type":"WebSite","@id":"https:\/\/www.tneutron.net\/mikro\/#website","url":"https:\/\/www.tneutron.net\/mikro\/","name":"TN Mikro","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.tneutron.net\/mikro\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.tneutron.net\/mikro\/#\/schema\/person\/b57f791b694136047454bb6ac5cbe375","name":"Taufiqullah","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/dcdf36434717ce57bea7f17eb3c140a2ff8def45941b720aa8fc1cccd6cdd505?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/dcdf36434717ce57bea7f17eb3c140a2ff8def45941b720aa8fc1cccd6cdd505?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/dcdf36434717ce57bea7f17eb3c140a2ff8def45941b720aa8fc1cccd6cdd505?s=96&d=mm&r=g","caption":"Taufiqullah"},"description":"Taufiqullah","sameAs":["http:\/\/www.tneutron.net","https:\/\/x.com\/t_neutron"]}]}},"_links":{"self":[{"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/posts\/1844","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/comments?post=1844"}],"version-history":[{"count":1,"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/posts\/1844\/revisions"}],"predecessor-version":[{"id":3006,"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/posts\/1844\/revisions\/3006"}],"wp:attachment":[{"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/media?parent=1844"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/categories?post=1844"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tneutron.net\/mikro\/wp-json\/wp\/v2\/tags?post=1844"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}