Difference between revisions of "Passives"

From OpenCircuits
Jump to navigation Jump to search
(revert spam)
Line 1: Line 1:
[http://jeanetterussel.ifrance.com/styles/rain-coats-ponchos.html rain coats ponchos] [http://tianaladson.pastels.jp/library/olde-harbor-inn.html olde harbor inn akron oh] [http://tiannarosenstei.free-site-host.com/mermaid-pictures.html mermaid pictures] [http://olimpiaridenhou.ifrance.com/pages/levi-jeans-international.html levi jeans international countries] [http://laciestonebrake.250mb.info/pages/mungo-jerry.html mungo jerry] [http://gladyliller.ifrance.com/periodontist-new.html periodontist new jersey] [http://billietartaglia.free-site-host.com/comments/free-hardcore-thumbnail.html free hardcore thumbnail galleries] [http://sonajoy.freehostplace.com/scottsdale-houses.html scottsdale houses for sale] [http://blakethames.ifrance.com/directory/organogel-canada.html organogel canada] [http://barly.vippers.jp/library/2001-body-focus.html 2001 body focus ford kit] [http://loraratliff.profil.bz/new/boston-market.html boston market] [http://sonajoy.freehostplace.com/compact-flash-card.html compact flash card reader] [http://sagemulvey.free-site-host.com/web/nlng-in-nigeria.html nlng in nigeria] [http://florenciarupp.powerblogger.jp/article/auction-ohio-station.html auction ohio station westerville] [http://rosariomundo.freekong.cn/q/easygals-porn.html easygals porn] [http://sukalexander.pop3.ru/resources/cherokee-north.html carolina cherokee hotel north] [http://chungmaupin.freehostplace.com/description/video-conferencing.html web video conferencing] [http://gladyliller.ifrance.com/major-brand-hearing.html major brand hearing aids] [http://tiannarosenstei.free-site-host.com/banquet-folding.html banquet folding tables] [http://nettikyzarc.interfree.it/work-clothes.html work clothes] [http://kamilahsaulsber.250mb.info/projector-lamp.html projector lamp] [http://georgehobart.mycv.tv/q/waterloo-mall.html crossroads mall waterloo iowa] [http://billietartaglia.free-site-host.com/comments/kixscripts-editor.html kixscripts editor download] [http://lashandraconcep.pop3.ru/text/100-permanent.html 100 permanent hair removal] [http://yenshellenberge.ifrance.com/bar-blender.html bar blender] [http://laciesouthwood.xixu.cc/blog/backache.html backache] [http://shiragerhardt.freehostplace.com/blog/california-map.html map of city in california] [http://merrishugart.powerblogger.jp/granite-tile.html granite tile countertop] [http://janeancotta.250mb.info/description/retro-clip-art.html retro clip art] [http://juliannewishart.ifrance.com/diaper-lover-girls.html diaper lover girls] [http://arceliakerfoot.ecv.vg/content/tilas-hot-spot.html tilas hot spot] [http://sonajoy.freehostplace.com/big-anime-breasts.html anime big breast] [http://willenatesta.interfree.it/chris-moyles.html bbc radio 1 chris moyles] [http://kamilahsaulsber.250mb.info/aluminum-tubing.html aluminum tubing] [http://sagemulvey.free-site-host.com/web/sports-auction-templates.html sports auction templates] [http://maiprivett.free-site-host.com/small/peso-vs-us-dollar.html peso vs us dollar] [http://mitglied.lycos.de/obwinsto/hole-music.html hole music] [http://maiprivett.free-site-host.com/small/carburetor-part.html zenith carburetor part] [http://juliannewishart.ifrance.com/033-j-std.html 033 j std] [http://margymeece.pop3.ru/angel-red-trumpet.html angel red trumpet] [http://mitglied.lycos.de/duphilli/topic/design-studio.html design studio] [http://gailschippers.freekong.cn/text/wwwepsoncom.html www.epson.com] [http://nettikyzarc.interfree.it/aquatic-park.html aquatic park] [http://aleciacalkins.xixu.cc/comments/ursuline-academy.html ursuline academy cincinnati] [http://laciestonebrake.250mb.info/pages/husqvarna-lawn-mower.html husqvarna riding lawn mower] [http://luebrashears.ifrance.com/semi-professions.html semi professions] [http://alvonina.interfree.it/lumber-liquidators.html lumber liquidators phoenix arizona] [http://laciestonebrake.250mb.info/pages/minnesota-vikings.html minnesota vikings tickets] [http://ohnosweeney.profil.bz/content/control-machete.html control machete] [http://yeebrinn.ifrance.com/comments/zone-alarm-trial.html zone alarm trial download] [http://ashleaengelke.ecv.vg/web/maxwell-house.html maxwell house commercials] [http://lashandraconcep.pop3.ru/text/index-tab.html index tab template] [http://nettikyzarc.interfree.it/baseball-field.html baseball field equipment] [http://staceecamper.pop3.ru/small/watch-a-women.html watch a women masturbating] [http://lashawndajarboe.freekong.cn/tatouage-au-henne.html tatouage au henne] [http://chungmaupin.freehostplace.com/description/coupon-codes.html coupon codes] [http://robertstrub.ecv.vg/html/ouch.html ouch toe] [http://furrysoap.interfree.it/northern-california.html northern california tea room] [http://madalenetarter.xixu.cc/atlanta-georgia.html atlanta georgia in mall shopping] [http://maiprivett.free-site-host.com/small/pictures-of-hot.html picture of hot sexy model] [http://rossananocera.free-site-host.com/small/hawaiian-arm-tattoos.html hawaiian arm tattoos] [http://eloiseoakman.wan.io/topic/nike-shoes-turf.html nike shoes turf] [http://tulabriley.ifrance.com/resources/jcrew.html catalog crew j] [http://chungmaupin.freehostplace.com/description/tom-cruise-and.html cruise holmes katie pic tom wedding] [http://lesliehastings.ifrance.com/diaper-position.html diaper position spanking] [http://jeanetterussel.ifrance.com/styles/lyrics-to-here.html lyrics to here i am bryan adams] [http://mitglied.lycos.de/duphilli/topic/anthrocon-2004.html anthrocon 2004 photos] [http://lanrenda.ifrance.com/dickens.html dickens village] [http://ohnosweeney.profil.bz/content/gaia-avatar-creator.html avatar creator dream gaia] [http://cameronmccardle.powerblogger.jp/blog/landscape-retaining.html landscape retaining walls] [http://fionawilfong.xixu.cc/wiki/tediz.html tediz] [http://arceliakerfoot.ecv.vg/content/maurice-noel-reels.html maurice noel reels] [http://hollieeaker.ifrance.com/web/michael-jackson.html michael jackson pyt] [http://barabaramuldown.ecv.vg/q/skin-tight-shirts.html skin tight shirt] [http://ferminamartello.profil.bz/article/kat-slater.html kat slater] [http://ferminamartello.profil.bz/article/vibrators.html vibrator orgasm] [http://shiragerhardt.freehostplace.com/blog/investing-resort.html investing resort real estate] [http://florenciarupp.powerblogger.jp/article/logs-into-lumber.html logs into lumber] [http://joyeledger.freekong.cn/styles/good-charlotte.html good charlotte wallpaper] [http://rossananocera.free-site-host.com/small/increase-fuel.html increase fuel economy] [http://ngocgossage.profil.bz/directory/oval-office.html oval office] [http://lashawndajarboe.freekong.cn/xinstall.html xinstall] [http://olimpiaridenhou.ifrance.com/pages/san-dominico-palace.html san dominico palace hotel] [http://juliannewishart.ifrance.com/evolution.html development evolution new old practical thing throughout window] [http://maiprivett.free-site-host.com/small/all-my-children.html all my children] [http://nettikyzarc.interfree.it/donation-letter.html donation letter] [http://tiannarosenstei.free-site-host.com/riverside-car.html riverside car sales] [http://tiannarosenstei.free-site-host.com/recetas-de-cocina.html recetas de cocina vegetariana] [http://kamilahsaulsber.250mb.info/wbls.html wbls .com] [http://retamalmberg.pop3.ru/the-crips-and.html the crips and the bloods] [http://kalirecio.pop3.ru/nutrients-in.html vegetable and fruit nutrients] [http://blakethames.ifrance.com/directory/network-monitor.html network monitor windows 2003] [http://arnitamcmurtry.ifrance.com/articles/free-couples-fucking.html free couples fucking galleries] [http://rossananocera.free-site-host.com/small/leona.html leona] [http://melyndastreiche.ifrance.com/photographers.html photographers] [http://sagemulvey.free-site-host.com/web/spiral-handrail.html spiral handrail] [http://margymeece.pop3.ru/online-camel.html online camel cash catalog] [http://lashawnkissinge.250mb.info/view/arizona-state.html arizona state] [http://chungmaupin.freehostplace.com/description/elixir.html elixir] [http://mitglied.lycos.de/huwelshia/kraftstationen.html kraftstationen] [http://melyndastreiche.ifrance.com/trans-am-diecast.html trans am diecast] [http://aleciacalkins.xixu.cc/comments/active-window-product.html active window product] [http://billietartaglia.free-site-host.com/comments/from-first-to-last.html from first to last emily] [http://americamartins.ecv.vg/what-is-the-size.html what is the size of earths moon] [http://laciesouthwood.xixu.cc/blog/maroon-5-and-kanye.html maroon 5 and kanye west] [http://christidrakes.freekong.cn/html/free-card-game.html free card game download] [http://shiragerhardt.freehostplace.com/blog/long-skirts.html long skirt] [http://ferminamartello.profil.bz/article/jean-louisa-kelly.html jean louisa kelly] [http://maiprivett.free-site-host.com/small/bammargera.html bammargera] [http://cameronmccardle.powerblogger.jp/blog/memorial-portraits.html memorial portraits] [http://patriamoxley.profil.bz/description/cat-diseases.html cat diseases] [http://hillarybriceno.ifrance.com/tin-khoa-hoc.html tin khoa hoc] [http://kamilahsaulsber.250mb.info/white-jeans.html white jeans] [http://patriamoxley.profil.bz/description/what-is-cancer.html cancer] [http://aleciacalkins.xixu.cc/comments/play-ground.html play ground] [http://furrysoap.interfree.it/striptease-clubs.html striptease clubs] [http://chungmaupin.freehostplace.com/description/mushroom-hunting.html mushroom hunting] [http://juliannewishart.ifrance.com/fixed-gear.html fixed gear] [http://kalirecio.pop3.ru/machine-protectors.html machine protectors] [http://nicolabernardin.pastels.jp/jazz-forum.html forum jazz utah] [http://tiannarosenstei.free-site-host.com/low-investment-opportunities.html low investment opportunities] [http://chungmaupin.freehostplace.com/description/peeping-tom.html peeping tom] [http://hillarybriceno.ifrance.com/washington-skate.html washington skate parks] [http://sukalexander.pop3.ru/resources/anagnostopoulou.html anagnostopoulou] [http://tulabriley.ifrance.com/resources/texas-chevy.html texas chevy dealer] [http://patriamoxley.profil.bz/description/gothic-girls.html gothic girls] [http://kamilahsaulsber.250mb.info/amber-rain.html amber anal rain] [http://arnitamcmurtry.ifrance.com/articles/martin-roque.html martin roque] [http://retamalmberg.pop3.ru/people-having-sex.html people having sex in public places] [http://cordiesilber.freehostplace.com/comments/secure.html secure] [http://staceecamper.pop3.ru/small/optimus-primal.html optimus primal transformer] [http://georgiannacross.powerblogger.jp/spaghetti.html spaghetti] [http://laciestonebrake.250mb.info/pages/dte-energy.html dte energy] [http://helenolguin.freehostplace.com/melody-ohair.html melody ohair] [http://helenolguin.freehostplace.com/real-lightsaber.html lightsaber not real toy] [http://willenatesta.interfree.it/e-eazy-layout.html e eazy layout] [http://tianaladson.pastels.jp/library/garmin-gps-iii.html garmin gps iii] [http://billietartaglia.free-site-host.com/comments/vacation-south.html vacation south pacific package] [http://furrysoap.interfree.it/ghost-videos.html ghost videos] [http://aleciacalkins.xixu.cc/comments/bruckner.html bruckner symphony] [http://billietartaglia.free-site-host.com/comments/strange-object.html strange object insertion] [http://rossananocera.free-site-host.com/small/wahoo-rescue-board.html wahoo rescue board] [http://billietartaglia.free-site-host.com/comments/nekromantix.html lyric nekromantix] [http://kamilahsaulsber.250mb.info/spanish-civil-war.html civil memoir moment spanish war war] [http://micheleremick.mycv.tv/resources/wimbledon-hospitality.html wimbledon hospitality] [http://cordiesilber.freehostplace.com/comments/bad-jokes.html bad day joke] [http://yenshellenberge.ifrance.com/meltric-plug.html meltric plug] [http://mitglied.lycos.de/coshopta/new/oversize-com.html oversize com] [http://mitglied.lycos.de/obwinsto/super-buffet.html super buffet saratoga] [http://samuelmccaw.ifrance.com/caribbean-honeymoon.html caribbean honeymoon] {{stub}}
+
{{stub}}
 
== Capacitors ==
 
== Capacitors ==
 
=== Basics ===
 
=== Basics ===

Revision as of 18:37, 30 January 2008

Capacitors

Basics

You can think of a capacitor as sort of a rechargeable battery, connect it to a voltage and a current will flow into it charging it up, later it will have a voltage of its own that can push the current back out. The key equation for a capacitor is:

c=q/v

Where:

  • C = capacitance ( units: farad = volts /coulomb )
  • V = voltage ( unit: volts )
  • Q = charge in the capacitor ( unit: coulomb )

A simple application of the formula above occurs when a constant or near constant current flow into a capacitor: then the voltage across it increases at a constant rate, the graph of the voltage against time will be a line rising ( or falling for a negative current ) from the left to the right. If the current is constant the line is straight.

Another way of thinking of a capacitor ( which is only partly correct ) is that it is a resistor with infinite resistance for DC and lower and lower resistance as the frequency goes up. This is a fair model for sinusoidal voltages and currents, but is less useful for signals such as square waves.


Uses:

  • ac coupling –- blocking -- isolation
  • timing
  • Time for a capacitor to charge or discharge is very roughly RC where R is the resistor in series with the capacitor.
  • Filter ( often power supply filter )
  • decoupling
  • tuned circuits

All capacitors are formed by having 2 conductors ( or plates ) connected to the two terminals of the capacitor. The conductors are separated from each other by insulator, typically very thin. Adding charge to one side forces like charge off the opposite plate because like charges repel. The larger the plates and the closer together they are the less voltage it takes to force in the charge. If the insulator ( called the dielectric ) is too thin it will be pierced by the charge and the capacitors becomes a conductor. Typically the basic specifications for a capacitors are its capacitance and the maximum voltage that can be used without causing the dialectic to break down.
There are many diferent technologies for manufacturing capacitor each with its own advantages and disadvantages.

External Links

  1. Capacitor From Wikipedia, the free encyclopedia
  2. RC circuit From Wikipedia, the free encyclopedia
  3. RC Timers and Timing Circuits
  4. Decoupling capacitor From Wikipedia, the free encyclopedia
  5. Components: Capacitors

Electrolytic

In electrolytic capacitors the insulating layer is formed by electro chemical action between the plates and other chemicals in the capacitor. This forms a very thin layer which allows large capacitance in a small package. Typically this works for one polarity and not another so electrolytic capacitors are marked with their polarity. There are some non-polarized electrolytics, but they are not common.

Some electrolytic capacitors manufactured between 1999 until today are made with bad electrolyte. Avoid these, see capacitor plague for more info.

Aluminum

Tantalum

Ceramic

Film

Polyester (Mylar)

Polystyrene

Polycarbonate

Polypropylene

Teflon

Exotics

Mica

Glass

Oil

Vacuum

Inductors

"Ferrites? I don't know much about 'em, I only use ferrites in switching regulators." --National Semiconductor's Bob Pease

Can be replaced in many circumstances with an impedance inverter using only an opamp, a capacitor, and a few resistors.

Resistors

List of standard 1% resistors. If you want 1% resistors, you must pick from this list or you will pay a fortune for the resistor, assuming you can ever get it. Interpret these numbers as the "mantissa" of the value. You can multiply the value by anything from 0.01 to about 100,000.

100 102 105 107 110 113 115 118 121 124 127 130 133 137 140 143 147 150 154 158 162 165 169 174 178 182 187 191 196 200 205 210 215 221 226 232 237 243 249 255 261 267 274 280 287 294 301 309 316 324 332 340 348 357 365 374 383 392 402 412 422 432 442 453 464 475 487 499 511 523 536 549 562 576 590 604 619 634 649 665 681 698 715 732 750 768 787 806 825 845 866 887 909 931 953 976

External Links:

  1. Components: Resistors

Carbon

Metal Film

Wire-Wound

Precision

Potentiometers

Digital_Potentiometers