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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 * 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 ## Resistors ## Capacitors ## Inductors ## Switches ## Indicators and Transducers * 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 Capacitors<^< Resistors | Course Index | Inductors >^>(:nl:) >>frame round<< Polystyrene dielectric capacitors are available in a wide range of values, from 10pF to 10nF, and with voltage ratings from 50V to 630V. Polystyrene capacitors have good electrical characteristics and are ideal for timing and general purpose applications. >>frame round<< Polyester capacitors are available in values from 1nF to 10µF and with voltage ratings from 63V to 400V. Polyester capacitors are generally inferior when compared with polystyrene types and they are usually used for less critical applications, such as decoupling. >>frame round<< Polycarbonate capacitors generally operate over a wider temperature range than their polystyrene counterparts and are available in values ranging from 10nF to 10µF. Polycarbonate capacitors are often used in applications where a more rugged component is required - such as a supply filter. >>frame round<< Ceramic disk capacitors are available in values from 2.2pF to 100nF and with voltage ratings which extend from 50V to over 1kV. Ceramic capacitors are not as electrically stable as other types and this makes them generally unsuitable for use in timing and other critical applications. Instead, this type of capacitor is normally used for decoupling where its low cost and small size make it ideal. >>frame round<< Electrolytic capacitors are available in either radial or axial lead packages (this picture shows a radial lead capacitor designed for printed circuit mounting) and with values that range from 100nF to over 47,000µF. Electrolytic capacitors have a wide tolerance range (typically -10% to +50%) and this makes them generally unsuitable for timing and other critical applications. In addition, the electrolytic action requires a d.c. polarizing voltage which MUST be applied with correct polarity. Electrolytic capacitors are used extensively for decoupling, smoothing and as reservoir capacitors in power supplies. >>frame round<< This preset solid-dielectric capacitor has a capacitance which is variable from about 12pF to 65pF. This makes it ideal for "trimming" radio frequency tuned circuits where it provides precise tuning adjustment of resonant frequency. >>frame round<< Variable capacitors like this are used for tuning simple radio receivers where only a single L-C tuned circuit is used. This particular component provides a capacitance which varies from 20pF to 500pF. >>frame round<< This "dual-gang" capacitor comprises two variable capacitors adjustable by means of a single control shaft. Each section of the capacitor provides a value which varies from 12pF to 208pF. This type of component is used for simultaneously tuning the aerial [or antenna] and local oscillator tuned circuits in a superhet radio receiver.
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Page last modified on July 26, 2011, at 08:45 AM
