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Electronic circuits and components * Course Index * Introduction * About the Author * About this Course * Feedback * Course Navigation * How to use this Course * TINA * Locktronics Fundamentals * Introduction: Fundamentals * Units and Multiples * Electricity * Electronic Principles * Electrical Circuits * Alternating Current * Assessment: Fundamentals Passive Components * Introduction: Passive Components * Resistors ## Resistor Specifications ## Examples: Resistor Specifications ## Preferred Values: Resistors ## Resistor Colour Code ## Examples: Resistor Colour Code Test ## BS1852 Resistor Coding ## Examples: BS1852 Resistor Coding ## Measuring Resistance ## Resistor Symbols ## Resistor Construction ## Resistors in Series ## Worksheet: Resistors in Series ## Resistors in Parallel ## Worksheet: Resistors in Parallel ## Resistance and Temperature ## Examples: Resistance and Temperature ## Positive Temperature Coefficient ## Negative Temperature Coefficient ## Thermistors ## Light Dependent Resistors * Capacitors * Inductors * Transformers * Batteries, Fuses, Lamps and Switches * Assessment: Passive Components Semiconductors * Introduction: Semiconductors * Diodes * Transistors * Logic Gates * Assessment: Semiconductors Passive Circuits * Introduction: Passive Circuits * Series and Parallel Connections * Kirchoff's Laws * Potential and Current Dividers * Passive Time Variant Circuits * Assessment: Passive Circuits Active Circuits * Introduction: Active Circuits * Power Supply Circuits * Operational Amplifier Circuits * Transistor Amplifier Circuits * 555 Timer Circuits * Assessment: Active Circuits Parts Gallery * Introduction: Parts Gallery * Passive Component Images * Semiconductor Images * Other Images * Quizzes |
(:Summary:Contains the 'action' links (like Browse, Edit, History, etc.), placed at the top of the page, see site page actions:) (:comment This page can be somewhat complex to figure out the first time you see it. Its contents are documented at PmWiki.SitePageActions if you need help. :) * Print (:comment (:if group Site,SiteAdmin,Cookbook,Profiles,PmWiki*:) (:comment delete if and ifend to enable backlinks:) * %item rel=nofollow class=backlinks accesskey='$[ak_backlinks]'% [[{*$Name}?action=search&q=link={*$FullName} | $[Backlinks] ]] (:ifend:) :) * Login Resistor Construction<^< Resistor Symbols | Course Index | Resistors in Series >^>(:nl:) >>frame round<< The simple form of a carbon resistor consists of a tubular rod of carbon enclosed in an insulating ceramic tube. The value of resistance and the tolerance is usually marked on the surface of the component using coloured bands. Values from 10 ohm to 1 M ohm are typical. >>frame round<< The simple wirewound resistor consists of a length of resistance wire spiral wound onto a tubular ceramic former and covered with a heatproof ceramic or vitreous enamel coating. The value of resistance and the power rating is usually marked on the surface of the component. Values from 0.1 ohm to 10k ohms are typical. >>frame round<< The simple variable resistor consists of a circular carbon track fitted with a sliding metal contact driven by a rotary control shaft. With three terminals (two fixed connections at the extreme ends of the track and one connection to the slider) a component of this type is more correctly known as a potentiometer. Values from 1k ohm to 1 M ohm are typical.
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