{"id":14257,"date":"2017-01-23T10:55:36","date_gmt":"2017-01-23T09:55:36","guid":{"rendered":"https:\/\/www.brickrknowledge.de\/en\/?p=14257"},"modified":"2017-01-23T10:55:36","modified_gmt":"2017-01-23T09:55:36","slug":"resistors-part-2","status":"publish","type":"post","link":"https:\/\/brickrknowledge.eu\/en\/resistors-part-2\/","title":{"rendered":"Resistors &#8211; part 2"},"content":{"rendered":"<p>We already gave you an<a href=\"https:\/\/brickrknowledge.eu\/en\/resistor-for-dummies\/\"> introduction into the matter of resistors <\/a>last week. Today, we will tell you about the different kinds of resistors:<\/p>\n<p><a href=\"https:\/\/www.brickrknowledge.de\/content\/uploads\/2017\/01\/widerstand.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-13931\" src=\"https:\/\/www.brickrknowledge.de\/content\/uploads\/2017\/01\/widerstand-300x288.jpg\" alt=\"widerstand\" width=\"300\" height=\"288\" srcset=\"https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/widerstand-300x288.jpg 300w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/widerstand-600x577.jpg 600w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/widerstand-333x320.jpg 333w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/widerstand-343x330.jpg 343w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/widerstand.jpg 625w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>The first special resistor is the<a href=\"https:\/\/brickrknowledge.eu\/en\/bricks\/resistor\/\"> <strong>LDR<\/strong><\/a>, it\u00b4s a resistor that changes its resistance depending on the light intensity. This means that it doesn\u00b4t change mechanically, e.g. by pressing a button, but depending on another electromagnetic factor: light. LDR stands for \u201cLight Dependent Resistor\u201d. If the ambient light is getting brighter, the resistance is getting smaller and the current flow through it therefore bigger.<\/p>\n<p><a href=\"https:\/\/www.brickrknowledge.de\/content\/uploads\/2016\/06\/9_4_3.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-7263\" src=\"https:\/\/www.brickrknowledge.de\/content\/uploads\/2016\/06\/9_4_3-225x300.jpg\" alt=\"9_4_3\" width=\"225\" height=\"300\" srcset=\"https:\/\/brickrknowledge.eu\/content\/uploads\/2016\/06\/9_4_3-225x300.jpg 225w, https:\/\/brickrknowledge.eu\/content\/uploads\/2016\/06\/9_4_3-768x1024.jpg 768w, https:\/\/brickrknowledge.eu\/content\/uploads\/2016\/06\/9_4_3-600x800.jpg 600w, https:\/\/brickrknowledge.eu\/content\/uploads\/2016\/06\/9_4_3-240x320.jpg 240w, https:\/\/brickrknowledge.eu\/content\/uploads\/2016\/06\/9_4_3-248x330.jpg 248w, https:\/\/brickrknowledge.eu\/content\/uploads\/2016\/06\/9_4_3-300x400.jpg 300w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/><\/a><\/p>\n<p>Now we\u00b4re looking at a resistor that changes its resistance by manually turning it: the <a href=\"https:\/\/brickrknowledge.eu\/en\/bricks\/resistor\/\"><strong>potentiometer<\/strong><\/a>. A potentiometer has three contacts, one of them is called sliding contact. If a potentiometer e.g. has a resistance of 10k Ohm, the sliding contact \u201cslides\u201d from 0 to 10k Ohm. If you connect a LED to a potentiometer, you can adjust its brightness continuously.<a href=\"https:\/\/www.brickrknowledge.de\/content\/uploads\/2017\/01\/Aktor_Sensor.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-14251\" src=\"https:\/\/www.brickrknowledge.de\/content\/uploads\/2017\/01\/Aktor_Sensor-300x300.jpg\" alt=\"Aktor_Sensor\" width=\"300\" height=\"300\" srcset=\"https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/Aktor_Sensor-300x300.jpg 300w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/Aktor_Sensor-150x150.jpg 150w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/Aktor_Sensor.jpg 600w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/Aktor_Sensor-320x320.jpg 320w, https:\/\/brickrknowledge.eu\/content\/uploads\/2017\/01\/Aktor_Sensor-330x330.jpg 330w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>Well, there are also resistors that depend on temperature. They are called <a href=\"https:\/\/brickrknowledge.eu\/en\/bricks\/resistor\/\"><strong>PTC<\/strong> and <strong>NTC<\/strong>.<\/a> PTC stands for \u201cPositive Temperature Coefficient\u201d and NTC stands for \u201cNegative Temperature Coefficient\u201d. Why are they called like that? Positive (in PTC) means that the resistance and the temperature are proportional: Higher temperature means higher resistance. If the temperature is lower, the PTC conducts electricity better, because its resistance is smaller. A NTC works exactly contrary.<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We already gave you an introduction into the matter of resistors last week. Today, we will tell you about the different kinds of resistors: The first special resistor is the LDR, it\u00b4s a resistor that changes its resistance depending on the light intensity. This means that it doesn\u00b4t change mechanically, e.g. by pressing a button, [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":14245,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[169],"tags":[390,808,143,807,354],"class_list":["post-14257","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorised-en-2","tag-ldr","tag-ntc","tag-potentiometer","tag-ptc","tag-resistor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Resistors - part 2 - Brick&#039;R&#039;knowledge<\/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:\/\/wiki.brickrknowledge.eu\/en\/resistors-part-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Resistors - part 2 - Brick&#039;R&#039;knowledge\" \/>\n<meta property=\"og:description\" content=\"We already gave you an introduction into the matter of resistors last week. 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