Meta tags:

Headings (most frequently used words):

in, current, voltage, characteristic, contents, electronics, electrophysiology, see, also, references, types, of, curves,

Text of the page (most frequently used words):
the (117), #voltage (36), #current (35), and (30), curve (20), resistance (19), with (17), from (14), are (14), device (12), this (11), negative (11), curves (11), through (11), which (11), positive (10), edit (9), line (9), relationship (9), electric (9), characteristic (8), that (8), for (8), linear (8), devices (8), wikipedia (7), ion (7), slope (7), represents (7), membrane (6), have (6), page (5), electrical (5), power (5), has (5), currents (5), such (5), potential (5), inside (5), outside (5), charged (5), components (5), hysteresis (5), between (5), applied (5), examples (5), energy (5), contents (4), search (4), use (4), commons (4), references (4), electronic (4), operating (4), characteristics (4), also (4), right (4), shows (4), more (4), biological (4), potassium (4), sodium (4), cell (4), across (4), crossing (4), while (4), field (4), these (4), diode (4), regions (4), can (4), origin (4), nonlinear (4), resistor (4), its (4), circuit (4), terminal (4), sources (4), electronics (4), article (4), hide (4), move (4), sidebar (4), toggle (3), view (3), about (3), additional (3), may (3), wikimedia (3), categories (3), wikidata (3), articles (3), channel (3), types (3), measured (3), corresponding (3), ions (3), electrophysiology (3), called (3), differential (3), history (3), diodes (3), straight (3), quadrants (3), other (3), active (3), third (3), passive (3), drain (3), terminals (3), material (3), tools (3), main (3), languages (2), table (2), contact (2), privacy (2), policy (2), terms (2), was (2), link (2), all (2), needing (2), august (2), 2008 (2), short (2), description (2), 1919 (2), engineers (2), related (2), see (2), membranes (2), indicating (2), dependent (2), not (2), case (2), known (2), positively (2), negatively (2), value (2), find (2), wide (2), flow (2), channels (2), showing (2), gunn (2), tunnel (2), each (2), direction (2), represented (2), tubes (2), inductors (2), represent (2), element (2), curved (2), example (2), resistors (2), ohmic (2), type (2), proportional (2), equal (2), reciprocal (2), ohm (2), law (2), transistors (2), second (2), fourth (2), when (2), some (2), form (2), into (2), charges (2), plane (2), passing (2), component (2), different (2), parameters (2), function (2), mosfet (2), one (2), graph (2), four (2), axis (2), learn (2), help (2), citations (2), appearance (2), upload (2), file (2), changes (2), links (2), read (2), log (2), create (2), account (2), donate (2), menu (2), add, topic, mobile, cookie, statement, statistics, developers, code, conduct, legal, safety, contacts, disclaimers, text, available, under, apply, using, site, you, agree, registered, trademark, non, profit, organization, foundation, inc, creative, attribution, sharealike, license, rendered, parsoid, last, edited, june, 2025, utc, hidden, category, matches, mosfets, engineering, conductance, retrieved, https, org, index, php, title, voltage_characteristic, oldid, 1293651960, van, der, bijl, institute, radio, 126, 1109, jrproc, 217425, doi, proceedings, ire, theory, themionic, amplifier, voltammetry, maximum, point, tracking, media, figure, relevant, excitable, neuronal, blue, gating, yellow, green, indicates, derived, summing, approximates, actual, containing, both, axon, ionic, outward, similarly, referred, inward, applicable, any, system, they, electricity, particularly, sub, refers, determined, conductances, approximation, whole, neuron, notice, arrows, pinched, memristor, breakover, diac, similar, shaded, region, relation, depends, only, present, input, but, past, inputs, consisting, families, closed, loops, branch, loop, marked, arrow, include, iron, core, neon, lights, gas, discharge, diacs, scrs, thyristors, transformers, single, valued, increasing, throughout, having, peaks, valleys, declining, where, used, make, oscillators, amplifiers, nonmonotonic, capacitors, most, common, encountered, circuits, obeys, over, range, constant, varies, contrast, pass, produce, quadrant, forced, against, opposing, force, gaining, thus, converting, generators, batteries, limited, first, loads, consume, always, flows, lose, converted, heat, conventional, motors, light, bulbs, red, shape, reveals, much, properties, grouped, instrument, traditionally, transistor, early, transconductance, tracer, simplest, according, exhibits, resulting, diagram, family, overvoltage, parameter, than, two, pair, depend, usually, displayed, complex, multiple, representing, vacuum, charts, determine, basic, model, behavior, referring, standard, symbols, direct, source, several, values, boundary, modes, indicated, upward, curving, parabola, saturation, displaystyle, overdrive, typically, difference, chart, large, small, junction, nonzero, internal, horizontal, vertical, plots, sign, convention, drop, battery, how, remove, message, please, unsourced, challenged, jstor, scholar, books, newspapers, news, removed, adding, reliable, improve, needs, output, redirected, free, encyclopedia, item, projects, printable, version, download, pdf, print, export, switch, legacy, parser, get, shortened, url, cite, information, permanent, what, here, general, actions, english, talk, tiếng, việt, oʻzbekcha, ўзбекча, українська, русский, português, latviešu, кыргызча, 한국어, қазақша, 日本語, हिन्दी, français, فارسی, eesti, español, deutsch, чӑвашла, čeština, català, български, العربية, subsection, top, personal, special, pages, recent, community, portal, contribute, random, events, navigation, jump, content,

Text of the page (random words):
current voltage characteristic wikipedia jump to content main menu main menu move to sidebar hide navigation main page contents current events random article about wikipedia contact us contribute help learn to edit community portal recent changes upload file special pages search search appearance donate create account log in personal tools donate create account log in contents move to sidebar hide top 1 in electronics toggle in electronics subsection 1 1 types of i v curves 2 in electrophysiology 3 see also 4 references toggle the table of contents current voltage characteristic 22 languages العربية български català čeština чӑвашла deutsch español eesti فارسی français हिन्दी 日本語 қазақша 한국어 кыргызча latviešu português русский українська oʻzbekcha ўзбекча tiếng việt 中文 edit links article talk english read edit view history tools tools move to sidebar hide actions read edit view history general what links here related changes upload file permanent link page information cite this page get shortened url switch to legacy parser print export download as pdf printable version in other projects wikimedia commons wikidata item appearance move to sidebar hide from wikipedia the free encyclopedia redirected from i v curve current output as a function of applied voltage for a material or device this article needs more citations please help improve this article by adding citations to reliable sources unsourced material may be challenged and removed find sources current voltage characteristic news newspapers books scholar jstor august 2008 learn how and when to remove this message the current voltage characteristics of four devices a resistor with large resistance a resistor with small resistance a p n junction diode and a battery with nonzero internal resistance the horizontal axis represents the voltage drop the vertical axis the current all four plots use the passive sign convention a current voltage characteristic or i v curve current voltage curve is a relationship typically represented as a chart or graph between the electric current through a circuit device or material and the corresponding voltage or potential difference across it in electronics edit mosfet drain current vs drain to source voltage for several values of the overdrive voltage v g s v t h displaystyle v_ gs v_ th the boundary between linear ohmic and saturation active modes is indicated by the upward curving parabola in electronics the relationship between the direct current dc through an electronic device and the dc voltage across its terminals is called a current voltage characteristic of the device electronic engineers use these charts to determine basic parameters of a device and to model its behavior in an electrical circuit these characteristics are also known as i v curves referring to the standard symbols for current and voltage in electronic components with more than two terminals such as vacuum tubes and transistors the current voltage relationship at one pair of terminals may depend on the current or voltage on a third terminal this is usually displayed on a more complex current voltage graph with multiple curves each one representing the current voltage relationship at a different value of current or voltage on the third terminal 1 for example the diagram at right shows a family of i v curves for a mosfet as a function of drain voltage with overvoltage v gs v th as a parameter the simplest i v curve is that of a resistor which according to ohm s law exhibits a linear relationship between the applied voltage and the resulting electric current the current is proportional to the voltage so the i v curve is a straight line through the origin with positive slope the reciprocal of the slope is equal to the resistance the i v curve of an electrical component can be measured with an instrument called a curve tracer the transconductance and early voltage of a transistor are examples of parameters traditionally measured from the device s i v curve types of i v curves edit the shape of an electrical component s characteristic curve reveals much about its operating properties i v curves of different devices can be grouped into categories the quadrants of the i v plane power sources have curves passing through the red regions active vs passive devices which have i v curves which are limited to the first and third quadrants of the i v plane passing through the origin are passive components loads that consume electric power from the circuit examples are resistors light bulbs and electric motors conventional current always flows through these devices in the direction of the electric field from the positive voltage terminal to the negative so the charges lose potential energy in the device which is converted to heat or some other form of energy in contrast devices with i v curves which pass through the second or fourth quadrants are active components power sources which can produce electric power examples are batteries and generators when it is operating in the second or fourth quadrant current is forced to flow through the device from the negative to the positive voltage terminal against the opposing force of the electric field so the electric charges are gaining potential energy thus the device is converting some other form of energy into electric energy linear vs nonlinear a straight line through the origin represents a linear circuit element while a curved line represents a nonlinear element for example resistors capacitors and inductors are linear while diodes and transistors are nonlinear an i v curve which is a straight line through the origin with positive slope represents a linear or ohmic resistor the most common type of resistance encountered in circuits it obeys ohm s law the current is proportional to the applied voltage over a wide range its resistance equal to the reciprocal of the slope of the line is constant a curved i v line represents a nonlinear resistance such as a diode in this type the resistance varies with the applied voltage or current negative resistance vs positive resistance if the i v curve has a positive slope increasing to the right throughout it represents a positive resistance an i v curve that is nonmonotonic having peaks and valleys represents a device which has negative resistance regions of the curve which have a negative slope declining to the right represent operating regions where the device has negative differential resistance while regions of positive slope represent positive differential resistance negative resistance devices can be used to make amplifiers and oscillators tunnel diodes and gunn diodes are examples of components that have negative resistance hysteresis vs single valued devices which have hysteresis that is in which the current voltage relation depends not only on the present applied input but also on the past history of inputs have i v curves consisting of families of closed loops each branch of the loop is marked with a direction represented by an arrow examples of devices with hysteresis include iron core inductors and transformers thyristors such as scrs and diacs and gas discharge tubes such as neon lights i v curve similar to a tunnel diode characteristic curve it has negative resistance in the shaded voltage region between v 1 and v 2 diac i v curve v bo is the breakover voltage memristor i v curve showing a pinched hysteresis gunn diode i v curve showing negative differential resistance with hysteresis notice arrows in electrophysiology edit an approximation of the potassium and sodium ion components of a so called whole cell i v curve of a neuron while i v curves are applicable to any electrical system they find wide use in the field of biological electricity particularly in the sub field of electrophysiology in this case the voltage refers to the voltage across a biological membrane a membrane potential and the current is the flow of charged ions through channels in this membrane the current is determined by the conductances of these channels in the case of ionic current across biological membranes currents are measured from inside to outside that is positive currents known as outward current corresponding to positively charged ions crossing a cell membrane from the inside to the outside or a negatively charged ion crossing from the outside to the inside similarly currents with a negative value are referred to as inward current corresponding to positively charged ions crossing a cell membrane from the outside to the inside or a negatively charged ion crossing from inside to outside the figure to the right shows an i v curve that is more relevant to the currents in excitable biological membranes such as a neuronal axon the blue line shows the i v relationship for the potassium ion it is linear indicating no voltage dependent gating of the potassium ion channel the yellow line shows the i v relationship for the sodium ion it is not linear indicating that the sodium ion channel is voltage dependent the green line indicates the i v relationship derived from summing the sodium and potassium currents this approximates the actual membrane potential and current relationship of a cell containing both types of channel see also edit wikimedia commons has media related to device current voltage characteristics maximum power point tracking voltammetry references edit h j van der bijl 1919 theory and operating characteristics of the themionic amplifier proceedings of the ire 7 2 institute of radio engineers 97 126 doi 10 1109 jrproc 1919 217425 retrieved from https en wikipedia org w index php title current voltage_characteristic oldid 1293651960 categories electrical resistance and conductance electronic engineering mosfets hidden categories articles with short description short description matches wikidata articles needing additional references from august 2008 all articles needing additional references commons category link is on wikidata this page was last edited on 2 june 2025 at 23 43 utc page was rendered with parsoid text is available under the creative commons attribution sharealike 4 0 license additional terms may apply by using this site you agree to the terms of use and privacy policy wikipedia is a registered trademark of the wikimedia foundation inc a non profit organization privacy policy about wikipedia disclaimers contact wikipedia legal safety contacts code of conduct developers statistics cookie statement mobile view search search toggle the table of contents current voltage characteristic 22 languages add topic