{"id":11765,"date":"2024-11-09T15:07:39","date_gmt":"2024-11-09T09:37:39","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=11765"},"modified":"2024-11-13T15:32:14","modified_gmt":"2024-11-13T10:02:14","slug":"simple-variable-resistor-or-potentiometer-with-a-pencil","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/simple-variable-resistor-or-potentiometer-with-a-pencil\/","title":{"rendered":"Simple Variable Resistor or Potentiometer With a Pencil!"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/tLtAxiwmw9U?si=jyxxomAwh_tKhBjK\" 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><\/p>\n<p>Simple way of making a variable resistor with the graphite (carbon) inside a pencil. I my childhood, pencils used be called lead pencils, though I have never seen lead inside pencils, it was all graphite. Maybe it was there earlier and that was the reason for the old name. Colour pencils seem to be made of something else. I had checked continuity of some colour pencils and found it beyond the range! Not sure whether they could be used for high value potentiometers. I have not checked.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Simple way of making a variable resistor with the graphite (carbon) inside a pencil. I my childhood, pencils used be called lead pencils, though I have never seen lead inside pencils, it was all graphite. Maybe it was there earlier and that was the reason for the old name. Colour pencils seem to be made [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11766,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-11765","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 v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Simple Variable Resistor or Potentiometer With a Pencil! - 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-variable-resistor-or-potentiometer-with-a-pencil\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Simple Variable Resistor or Potentiometer With a Pencil! - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"Simple way of making a variable resistor with the graphite (carbon) inside a pencil. I my childhood, pencils used be called lead pencils, though I have never seen lead inside pencils, it was all graphite. Maybe it was there earlier and that was the reason for the old name. Colour pencils seem to be made [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/techworld\/simple-variable-resistor-or-potentiometer-with-a-pencil\/\" \/>\n<meta property=\"og:site_name\" content=\"Johnson&#039;s Techworld\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-09T09:37:39+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-13T10:02:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2024\/11\/Simple-Variable-Resistor-or-Potentiometer-With-a-Pencil.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"778\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/simple-variable-resistor-or-potentiometer-with-a-pencil\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/simple-variable-resistor-or-potentiometer-with-a-pencil\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"headline\":\"Simple Variable Resistor or Potentiometer With a Pencil!\",\"datePublished\":\"2024-11-09T09:37:39+00:00\",\"dateModified\":\"2024-11-13T10:02:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/simple-variable-resistor-or-potentiometer-with-a-pencil\\\/\"},\"wordCount\":95,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/simple-variable-resistor-or-potentiometer-with-a-pencil\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2024\\\/11\\\/Simple-Variable-Resistor-or-Potentiometer-With-a-Pencil.jpg\",\"articleSection\":[\"Amateur Radio (Ham Radio)\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/simple-variable-resistor-or-potentiometer-with-a-pencil\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/simple-variable-resistor-or-potentiometer-with-a-pencil\\\/\",\"name\":\"Simple Variable Resistor or Potentiometer With a Pencil! 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