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6,000 | Dusk occurs at the darkest stage of twilight, or at the very end of astronomical twilight after sunset and just before nightfall. At predusk, during early to intermediate stages of twilight, enough light in the sky under clear conditions may occur to read outdoors without artificial illumination; however, at the end of civil twilight (when Earth rotates to a point at which the center of the Sun's disk is 6° below the local horizon), such lighting is required to read outside. The term dusk usually refers to astronomical dusk, or the darkest part of twilight before night begins | Dusk |
6,001 | The Lampyridae are a family of elateroid beetles with more than 2,000 described species, many of which are light-emitting. They are soft-bodied beetles commonly called fireflies, lightning bugs, or glowworms for their conspicuous production of light, mainly during twilight, to attract mates. Light production in the Lampyridae is thought to have originated as an honest warning signal that the larvae were distasteful; this was co-opted in evolution as a mating signal in the adults | Firefly |
6,002 | A nightlight is a small light fixture, usually electrical, placed for comfort or convenience in dark areas or areas that may become dark at certain times, such as at night or during an emergency. Small long-burning candles serving a similar function are referred to as "tealights".
Uses and cultures
People usually use nightlights for the sense of security which having a light on provides, or to relieve fear of the dark, especially in young children | Nightlight |
6,003 | The miasma theory (also called the miasmatic theory) is an abandoned medical theory that held that diseases—such as cholera, chlamydia, or the Black Death—were caused by a miasma (μίασμα, Ancient Greek for 'pollution'), a noxious form of "bad air", also known as night air. The theory held that epidemics were caused by miasma, emanating from rotting organic matter. Though miasma theory is typically associated with the spread of contagious diseases, some academics in the early nineteenth century suggested that the theory extended to other conditions as well, e | Miasma theory |
6,004 | Midnight is the transition time from one day to the next – the moment when the date changes, on the local official clock time for any particular jurisdiction. By clock time, midnight is the opposite of noon, differing from it by 12 hours.
Solar midnight is the time opposite to solar noon, when the Sun is closest to the nadir, and the night is equidistant from dusk and dawn | Midnight |
6,005 | Night combat is combat that occurs during the hours of darkness. It is distinguished from daytime combat by lower visibility and its reversed relation to the circadian cycle. Typically, night combat is favorable to the attacker, with offensive tactics being focused on exploiting the advantages to maximum effect | Night combat |
6,006 | Night diving is underwater diving done during the hours of darkness. It frequently refers specifically to recreational diving which takes place in darkness. The diver can experience a different underwater environment at night, because many marine animals are nocturnal | Night diving |
6,007 | A night owl, evening person or simply owl, is a person who tends to stay up until late at night, or to the very early hours of the morning. Night owls who are involuntarily unable to fall asleep for several hours after a normal time may have delayed sleep phase disorder.
The opposite of a night owl is an early bird – a lark as opposed to an owl – which is someone who tends to begin sleeping at a time that is considered early and also wakes early | Night owl |
6,008 | A night school is an adult learning school that holds classes in the evening or at night to accommodate people who work during the day. A community college or university may hold night school classes that admit undergraduates.
Italy
The Scuola serale (evening school) is a structured institution for the education and training of professional adults in Italy | Night school |
6,009 | Night Work Conventions are International Labour Organization Convention conventions regulating the rights of night workers. They were specifically aimed at young persons, women or people in specific types of employment (industrial, non-industrial or bakeries) and conceived between 1919 and 1948. A more general instrument (not addressing young people however) was signed in 1990 | Night Work Conventions |
6,010 | The nocturnal bottleneck hypothesis is a hypothesis to explain several mammalian traits. In 1942, Gordon Lynn Walls described this concept which states that placental mammals were mainly or even exclusively nocturnal through most of their evolutionary history, starting with their origin 225 million years ago, and only ending with the demise of the non-avian dinosaurs 66 million years ago. While some mammal groups have later evolved to fill diurnal niches, the approximately 160 million years spent as nocturnal animals has left a lasting legacy on basal anatomy and physiology, and most mammals are still nocturnal | Nocturnal bottleneck |
6,011 | Photuris bethaniensis is a species of firefly in the genus Photuris. Photuris bethaniensis, also known as the Bethany Beach firefly, is found in interdunal swale habitats along a 25 kilometre stretch of shoreline in Sussex County, Delaware. It is extremely rare and in decline | Photuris bethaniensis |
6,012 | Polar night is a phenomenon in the northernmost and southernmost regions of Earth where night lasts for more than 24 hours. This occurs only inside the polar circles. The opposite phenomenon, polar day, or midnight sun, occurs when the Sun remains above the horizon for more than 24 hours | Polar night |
6,013 | In commercial aviation, a red-eye flight refers to a flight that departs at night and arrives the next morning, especially when the total flight time is insufficient for passengers to get a full night's sleep.
The term derives from red eyes as a symptom of fatigue.
Causes and utilities
For the airline, overnight flights will enable more use of aircraft that would otherwise be idle at night | Red-eye flight |
6,014 | Night skiing is the sport of skiing or snowboarding after sundown, offered at many ski resorts and mountains. There are usually floodlights – including LED lamps – along the piste which allow for better visibility. It typically begins after a resort's skiing-day ends (sunset), and ends between 8:00 PM and 10:30 PM | Night skiing |
6,015 | The night sky is the nighttime appearance of celestial objects like stars, planets, and the Moon, which are visible in a clear sky between sunset and sunrise, when the Sun is below the horizon.
Natural light sources in a night sky include moonlight, starlight, and airglow, depending on location and timing. Aurorae light up the skies above the polar circles | Night sky |
6,016 | Skyglow (or sky glow) is the diffuse luminance of the night sky, apart from discrete light sources such as the Moon and visible individual stars. It is a commonly noticed aspect of light pollution. While usually referring to luminance arising from artificial lighting, skyglow may also involve any scattered light seen at night, including natural ones like starlight, zodiacal light, and airglow | Skyglow |
6,017 | Twilight is light produced by sunlight scattering in the upper atmosphere, when the Sun is below the horizon, which illuminates the lower atmosphere and the Earth's surface. The word twilight can also refer to the periods of time when this illumination occurs. The lower the Sun is beneath the horizon, the dimmer the twilight (other factors such as atmospheric conditions being equal) | Twilight |
6,018 | Wilde Sau (Lit. wild sow; generally known in English as "Wild Boar") was the term given by the Luftwaffe to the tactic used from 1943 to 1944 during World War II by which British night bombers were engaged by single-seat day-fighter aircraft flying in the Defence of the Reich.
It was adopted when the Allies had the advantage over German radar controlled interception | Wilde Sau |
6,019 | A capacitor is a device that stores electrical energy in an electric field by accumulating electric charges on two closely spaced surfaces that are insulated from each other. It is a passive electronic component with two terminals.
The effect of a capacitor is known as capacitance | Capacitor |
6,020 | Capacitors are manufactured in many styles, forms, dimensions, and from a large variety of materials. They all contain at least two electrical conductors, called plates, separated by an insulating layer (dielectric). Capacitors are widely used as parts of electrical circuits in many common electrical devices | Capacitor types |
6,021 | An action potential occurs when the membrane potential of a specific cell rapidly rises and falls. This depolarization then causes adjacent locations to similarly depolarize. Action potentials occur in several types of animal cells, called excitable cells, which include neurons, muscle cells, and in some plant cells | Action potential |
6,022 | An action potential pulse is a mathematically and experimentally correct Synchronized Oscillating Lipid Pulse coupled with an Action Potential. This is a continuation of Hodgkin Huxley's work in 1952 with the inclusion of accurately modelling ion channel proteins, including their dynamics and speed of activation.
The action potential pulse is a model of the speed an action potential that is dynamically dependent upon the position and number of ion channels, and the shape and make up of the axon | Action potential pulse |
6,023 | Aluminum electrolytic capacitors are polarized electrolytic capacitors whose anode electrode (+) is made of a pure aluminum foil with an etched surface. The aluminum forms a very thin insulating layer of aluminum oxide by anodization that acts as the dielectric of the capacitor. A non-solid electrolyte covers the rough surface of the oxide layer, serving in principle as the second electrode (cathode) (-) of the capacitor | Aluminum electrolytic capacitor |
6,024 | Capacitors have many uses in electronic and electrical systems. They are so ubiquitous that it is rare that an electrical product does not include at least one for some purpose. Capacitors allow only AC signals to pass when they are charged blocking DC signals | Applications of capacitors |
6,025 | A back-to-back connection is the direct connection of the output of one device to the input of a similar or related device.
Telecommunications
In telecommunications, a back-to-back connection can be formed by connecting a transmitter directly to a receiver without a transmission line in between. This is used for equipment measurements and testing purposes | Back-to-back connection |
6,026 | Black Gate is the name of a brand of audio grade electrolytic capacitor made in Japan by Rubycon Corporation. They have acquired a reputation for very high quality for use in the signal path, and power supplies, of audio circuitry.
The quality of capacitors may vary considerably depending on their construction and the type of insulating materials used | Black Gate (capacitor) |
6,027 | Body capacitance is the physical property of the human body that it acts as a capacitor. Like any other electrically conductive object, a human body can store electric charge if insulated. The actual amount of capacitance varies with the surroundings; it would be low when standing on top of a pole with nothing nearby, but high when leaning against an insulated, but grounded large metal surface, such as a household refrigerator, or a metal wall in a factory | Body capacitance |
6,028 | A capacitor electric vehicle is a vehicle that uses supercapacitors (also called ultracapacitors) to store electricity. As of 2010, the best ultracapacitors can only store about 5% of the energy that lithium-ion rechargeable batteries can, limiting them to a couple of miles per charge. This makes them ineffective as a general energy storage medium for passenger vehicles | Capacitor electric vehicle |
6,029 | Capacitive coupling is the transfer of energy within an electrical network or between distant networks by means of displacement current between circuit(s) nodes, induced by the electric field. This coupling can have an intentional or accidental effect.
In its simplest implementation, capacitive coupling is achieved by placing a capacitor between two nodes | Capacitive coupling |
6,030 | The capacitor plague was a problem related to a higher-than-expected failure rate of non-solid aluminium electrolytic capacitors between 1999 and 2007, especially those from some Taiwanese manufacturers, due to faulty electrolyte composition that caused corrosion accompanied by gas generation; this often resulted in rupturing of the case of the capacitor from the build-up of pressure.
High failure rates occurred in many well-known brands of electronics, and were particularly evident in motherboards, video cards, and power supplies of personal computers.
A 2003 article in The Independent claimed that the cause of the faulty capacitors was due to a mis-copied formula | Capacitor plague |
6,031 | Carbide-derived carbon (CDC), also known as tunable nanoporous carbon, is the common term for carbon materials derived from carbide precursors, such as binary (e. g. SiC, TiC), or ternary carbides, also known as MAX phases (e | Carbide-derived carbon |
6,032 | A ceramic capacitor is a fixed-value capacitor where the ceramic material acts as the dielectric. It is constructed of two or more alternating layers of ceramic and a metal layer acting as the electrodes. The composition of the ceramic material defines the electrical behavior and therefore applications | Ceramic capacitor |
6,033 | In electronics, a decoupling capacitor is a capacitor used to decouple (i. e. prevent electrical energy from transferring to) one part of a circuit from another | Decoupling capacitor |
6,034 | Dielectric absorption is the name given to the effect by which a capacitor, that has been charged for a long time, discharges only incompletely when briefly discharged. Although an ideal capacitor would remain at zero volts after being discharged, real capacitors will develop a small voltage from time-delayed dipole discharging, a phenomenon that is also called dielectric relaxation, "soakage", or "battery action". For some dielectrics, such as many polymer films, the resulting voltage may be less than 1–2% of the original voltage, but it can be as much as 15% for electrolytic capacitors | Dielectric absorption |
6,035 | Double-layer capacitance is the important characteristic of the electrical double layer which appears at the interface between a surface and a fluid (for example, between a conductive electrode and an adjacent liquid electrolyte). At this boundary two layers of electric charge with opposing polarity form, one at the surface of the electrode, and one in the electrolyte. These two layers, electrons on the electrode and ions in the electrolyte, are typically separated by a single layer of solvent molecules that adhere to the surface of the electrode and act like a dielectric in a conventional capacitor | Double-layer capacitance |
6,036 | A supercapacitor (SC), also called an ultracapacitor, is a high-capacity capacitor, with a capacitance value much higher than other capacitors but with lower voltage limits. It bridges the gap between electrolytic capacitors and rechargeable batteries. It typically stores 10 to 100 times more energy per unit volume or mass than electrolytic capacitors, can accept and deliver charge much faster than batteries, and tolerates many more charge and discharge cycles than rechargeable batteries | Supercapacitor |
6,037 | An electrolytic capacitor is a polarized capacitor whose anode or positive plate is made of a metal that forms an insulating oxide layer through anodization. This oxide layer acts as the dielectric of the capacitor. A solid, liquid, or gel electrolyte covers the surface of this oxide layer, serving as the cathode or negative plate of the capacitor | Electrolytic capacitor |
6,038 | In electromagnetism, an electrophorus or electrophore is a simple, manual, capacitive, electrostatic generator used to produce charge via the process of electrostatic induction. A first version of it was invented in 1762 by Swedish professor Johan Carl Wilcke. Italian scientist Alessandro Volta improved and popularized the device in 1775, and is sometimes erroneously credited with its invention | Electrophorus |
6,039 | Equivalent series inductance (ESL) is an effective inductance that is used to describe the inductive part of the impedance of certain electrical components.
Overview
The theoretical treatment of devices such as capacitors and resistors tends to assume they are ideal or "perfect" devices, contributing only capacitance or resistance to the circuit. However, all physical devices are connected to a circuit through conductive leads and paths, which contain inherent, usually unwanted, inductance | Equivalent series inductance |
6,040 | Practical capacitors and inductors as used in electric circuits are not ideal components with only capacitance or inductance. However, they can be treated, to a very good degree of approximation, as being ideal capacitors and inductors in series with a resistance; this resistance is defined as the equivalent series resistance (ESR). If not otherwise specified, the ESR is always an AC resistance, which means it is measured at specified frequencies, 100 kHz for switched-mode power supply components, 120 Hz for linear power-supply components, and at its self-resonant frequency for general-application components | Equivalent series resistance |
6,041 | Ferroelectric capacitor is a capacitor based on a ferroelectric material. In contrast, traditional capacitors are based on dielectric materials. Ferroelectric devices are used in digital electronics as part of ferroelectric RAM, or in analog electronics as tunable capacitors (varactors) | Ferroelectric capacitor |
6,042 | Film capacitors, plastic film capacitors, film dielectric capacitors, or polymer film capacitors, generically called film caps as well as power film capacitors, are electrical capacitors with an insulating plastic film as the dielectric, sometimes combined with paper as carrier of the electrodes.
The dielectric films, depending on the desired dielectric strength, are drawn in a special process to an extremely thin thickness, and are then provided with electrodes. The electrodes of film capacitors may be metallized aluminum or zinc applied directly to the surface of the plastic film, or a separate metallic foil | Film capacitor |
6,043 | Capacitors have many uses in electronic and electrical systems. They are so ubiquitous that it is rare that an electrical product does not include at least one for some purpose. Capacitors allow only AC signals to pass when they are charged blocking DC signals | Applications of capacitors |
6,044 | A force-sensing capacitor is a material whose capacitance changes when a force, pressure or mechanical stress is applied. They are also known as "force-sensitive capacitors". They can provide improved sensitivity and repeatability compared to force-sensitive resistors but traditionally required more complicated electronics | Force-sensing capacitor |
6,045 | Franklin bells (also known as lightning bells) are an early demonstration of electric charge designed to work with a Leyden jar or a Lightning rod. Franklin bells are only a qualitative indicator of electric charge and were used for simple demonstrations rather than research. The bells are an adaptation to the first device that converted electrical energy into mechanical energy in the form of continuous mechanical motion, in this case, the moving of a bell clapper back and forth between two oppositely charged bells | Franklin bells |
6,046 | A gimmick capacitor is a capacitor made by twisting two pieces of insulated wire together. The capacitance may be varied by loosening or tightening the winding. The capacitance can also be reduced by shortening the twisted pair by cutting | Gimmick capacitor |
6,047 | The Hybrid electric double layer (Hybrid EDL) is a model to describe the formation of electric double layer considering the contribution of electron transfer at liquid-solid interface, which is firstly proposed by Wang et al. in 2018. The major difference between the hybrid EDL model and the traditional EDL model is that the hybrid EDL model considers that there are both electrons and ions on the solid surface in the EDL, while the traditional EDL model considers that the solid surface has only adsorbed ions | Hybrid electric double layer |
6,048 | Ibiden Co. , Ltd. (イビデン株式会社, Ibiden Kabushiki-kaisha) is a Japanese electronics company headquartered in Ogaki, Gifu prefecture that manufactures electronics-related products, such as printed circuit boards and IC packaging | Ibiden |
6,049 | A Leyden jar (or Leiden jar, or archaically, sometimes Kleistian jar) is an electrical component that stores a high-voltage electric charge (from an external source) between electrical conductors on the inside and outside of a glass jar. It typically consists of a glass jar with metal foil cemented to the inside and the outside surfaces, and a metal terminal projecting vertically through the jar lid to make contact with the inner foil. It was the original form of the capacitor (also called a condenser) | Leyden jar |
6,050 | A lithium-ion capacitor (LIC or LiC) is a hybrid type of capacitor classified as a type of supercapacitor. It is called a hybrid because the anode is the same as those used in lithium-ion batteries and the cathode is the same as those used in supercapacitors. Activated carbon is typically used as the cathode | Lithium-ion capacitor |
6,051 | A MIS capacitor is a capacitor formed from a layer of metal, a layer of insulating material and a layer of semiconductor material. It gets its name from the initials of the metal-insulator-semiconductor (MIS) structure. As with the MOS field-effect transistor structure, for historical reasons, this layer is also often referred to as a MOS capacitor, but this specifically refers to an oxide insulator material | MIS capacitor |
6,052 | The metal-oxide-semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET) is a type of field-effect transistor (FET), most commonly fabricated by the controlled oxidation of silicon. It has an insulated gate, the voltage of which determines the conductivity of the device. This ability to change conductivity with the amount of applied voltage can be used for amplifying or switching electronic signals | MOSFET |
6,053 | A motor capacitor is an electrical capacitor that alters the current to one or more windings of a single-phase alternating-current induction motor to create a rotating magnetic field.
There are two common types of motor capacitors, start capacitor and run capacitor (including a dual run capacitor). Motor capacitors are used with single-phase electric motors: 11 that are in turn used to drive air conditioners, hot tub/jacuzzi spa pumps, powered gates, large fans or forced-air heat furnaces for example | Motor capacitor |
6,054 | A niobium electrolytic capacitor (historically also Columbium capacitor) is an electrolytic capacitor whose anode (+) is made of passivated niobium metal or niobium monoxide, on which an insulating niobium pentoxide layer acts as a dielectric. A solid electrolyte on the surface of the oxide layer serves as the capacitor's cathode (−).
Niobium capacitors are available in SMD packaging and compete with tantalum chip capacitors in certain voltage and capacitance ratings | Niobium capacitor |
6,055 | A photoflash capacitor is an electrolytic capacitor used in flash cameras, professional flashes, and also in solid-state laser power supplies. Their usual purpose is to briefly power a high-voltage flash tube, used to illuminate a photographic subject or optically pump a laser rod. As flash tubes require very high current for a very short time to operate, photoflash capacitors are designed to supply high discharge current pulses without excessive internal heating | Photoflash capacitor |
6,056 | A polymer capacitor, or more accurately a polymer electrolytic capacitor, is an electrolytic capacitor (e-cap) with a solid conductive polymer electrolyte. There are four different types:
Polymer tantalum electrolytic capacitor (Polymer Ta-e-cap)
Polymer aluminium electrolytic capacitor (Polymer Al-e-cap)
Hybrid polymer capacitor (Hybrid polymer Al-e-cap)
Polymer niobium electrolytic capacitorsPolymer Ta-e-caps are available in rectangular surface-mounted device (SMD) chip style. Polymer Al-e-caps and hybrid polymer Al-e-caps are available in rectangular surface-mounted device (SMD) chip style, in cylindrical SMDs (V-chips) style or as radial leaded versions (single-ended) | Polymer capacitor |
6,057 | Pseudocapacitance is the electrochemical storage of electricity in an electrochemical capacitor known as a pseudocapacitor. This faradaic charge transfer originates by a very fast sequence of reversible faradaic redox, electrosorption or intercalation processes on the surface of suitable electrodes. Pseudocapacitance is accompanied by an electron charge-transfer between electrolyte and electrode coming from a de-solvated and adsorbed ion | Pseudocapacitance |
6,058 | Pseudocapacitors store electrical energy faradaically by electron charge transfer between electrode and electrolyte. This is accomplished through electrosorption, reduction-oxidation reactions (redox reactions), and intercalation processes, termed pseudocapacitance. A pseudocapacitor is part of an electrochemical capacitor, and forms together with an electric double-layer capacitor (EDLC) to create a supercapacitor | Pseudocapacitor |
6,059 | In neurophysiology, several mathematical models of the action potential have been developed, which fall into two basic types. The first type seeks to model the experimental data quantitatively, i. e | Quantitative models of the action potential |
6,060 | A Ragone plot ( rə-GOH-nee) is a plot used for comparing the energy density of various energy-storing devices. On such a chart the values of specific energy (in W·h/kg) are plotted versus specific power (in W/kg). Both axes are logarithmic, which allows comparing performance of very different devices | Ragone plot |
6,061 | SAL electrolytic capacitors (SAL meaning solid aluminum) are a form of capacitor developed for high capacitance in a small package, with a long and robust service life. They are aluminum electrolytic capacitors with anodic oxidized aluminum oxide as dielectric and with the semiconducting solid manganese dioxide as electrolyte. They are made of etched and formed aluminum anodes, which are folded for the dipped pearl types or wound into a roll for the axial style | SAL electrolytic capacitor |
6,062 | Silver mica capacitors are high precision, stable and reliable capacitors. They are available in small values, and are mostly used at high frequencies and in cases where low losses (high Q) and low capacitor change over time is desired.
History
Mica has been used as a capacitor dielectric since the mid-19th century | Silver mica capacitor |
6,063 | Structural composite supercapacitors are multifunctional materials that can both bear mechanical load and store electrical energy. Combined with structural batteries, they would potentially enable an overall weight reduction of electric vehicles.
Typically, structural composite supercapacitors are based on the design of carbon fibre reinforced polymers | Structural composite supercapacitor |
6,064 | A switched capacitor (SC) is an electronic circuit that implements a function by moving charges into and out of capacitors when electronic switches are opened and closed. Usually, non-overlapping clock signals are used to control the switches, so that not all switches are closed simultaneously. Filters implemented with these elements are termed switched-capacitor filters, which depend only on the ratios between capacitances and the switching frequency, and not on precise resistors | Switched capacitor |
6,065 | A tantalum electrolytic capacitor is an electrolytic capacitor, a passive component of electronic circuits. It consists of a pellet of porous tantalum metal as an anode, covered by an insulating oxide layer that forms the dielectric, surrounded by liquid or solid electrolyte as a cathode. Because of its very thin and relatively high permittivity dielectric layer, the tantalum capacitor distinguishes itself from other conventional and electrolytic capacitors in having high capacitance per volume (high volumetric efficiency) and lower weight | Tantalum capacitor |
6,066 | A trimmer, or preset, is a miniature adjustable electrical component. It is meant to be set correctly when installed in some device, and never seen or adjusted by the device's user. Trimmers can be variable resistors (potentiometers), variable capacitors, or trimmable inductors | Trimmer (electronics) |
6,067 | The two capacitor paradox or capacitor paradox is a paradox, or counterintuitive thought experiment, in electric circuit theory. The thought experiment is usually described as follows:
Two identical capacitors are connected in parallel with an open switch between them. One of the capacitors is charged with a voltage of
V
i
{\displaystyle V_{i}}
, the other is uncharged | Two capacitor paradox |
6,068 | A vacuum variable capacitor is a variable capacitor which uses a high vacuum as the dielectric instead of air or other insulating material. This allows for a higher voltage rating than an air dielectric using a smaller total volume. However, many dielectrics have higher breakdown field strengths than vacuum: 60-170 MV/m for teflon, 470-670 MV/m for fused silica and 2000 MV/m for diamond, compared with 20-40 MV/m for vacuum | Vacuum variable capacitor |
6,069 | A variable capacitor is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are often used in L/C circuits to set the resonance frequency, e. g | Variable capacitor |
6,070 | In electronics, a varicap diode, varactor diode, variable capacitance diode, variable reactance diode or tuning diode is a type of diode designed to exploit the voltage-dependent capacitance of a reverse-biased p–n junction.
Applications
Varactors are used as voltage-controlled capacitors. They are commonly used in voltage-controlled oscillators, parametric amplifiers, and frequency multipliers | Varicap |
6,071 | A water capacitor is a device that uses water as its dielectric insulating medium.
Theory of operation
A capacitor is a device in which electrical energy is introduced and can be stored for a later time. A capacitor consists of two conductors separated by a non-conductive region | Water capacitor |
6,072 | Components of an electrical circuit are electrically connected if an electric current can run between them through an electrical conductor. An electrical connector is an electromechanical device used to create an electrical connection between parts of an electrical circuit, or between different electrical circuits, thereby joining them into a larger circuit. Most electrical connectors have a gender – i | Electrical connector |
6,073 | A bayonet mount (mainly as a method of mechanical attachment, such as fitting a lens to a camera using a matching lens mount) or bayonet connector (for electrical use) is a fastening mechanism consisting of a cylindrical male side with one or more radial pins, and a female receptor with matching L-shaped slot(s) and with spring(s) to keep the two parts locked together. The slots are shaped like a capital letter L with serif (a short upward segment at the end of the horizontal arm); the pin slides into the vertical arm of the L, rotates across the horizontal arm, then is pushed slightly upwards into the short vertical "serif" by the spring; the connector is no longer free to rotate unless pushed down against the spring until the pin is out of the "serif".
The bayonet mount is the standard light bulb fitting in the United Kingdom and in many countries that were members of the British Empire including Pakistan, Australia, Hong Kong, Fiji, India, Sri Lanka, Ireland, and New Zealand, parts of the Middle East and Africa and, historically, in France and Greece | Bayonet mount |
6,074 | A binding post is a connector commonly used on electronic test equipment to terminate (attach) a single wire or test lead. They are also found on loudspeakers and audio amplifiers as well as other electrical equipment.
History
A binding post contains a central threaded metal rod and a cap that screws down on that rod | Binding post |
6,075 | A blind mate connector is differentiated from other types of connectors by the mating action that happens via a sliding or snapping action which can be accomplished without wrenches or other tools. They have self-aligning features which allows a small misalignment when mating.
Usage
Electrical blind mate connectors provide power or signal and are distinguished from other connectors in that they do not feature a rigid mechanical retention mechanism belonging to the interface itself, such as a threaded coupling nut on an SMA connector | Blind mate connector |
6,076 | A pin header (or simply header) is a form of electrical connector. A male pin header consists of one or more rows of metal pins molded into a plastic base, often 2. 54 mm (0 | Pin header |
6,077 | A breakout box is a piece of electrical test equipment used to support integration testing, expedite maintenance, and streamline the troubleshooting process at the system, subsystem, and component-level by simplifying the access to test signals. Breakout boxes span a wide spectrum of functionality. Some serve to break out every signal connection coming into a unit, while others breakout only specific signals commonly monitored for either testing or troubleshooting purposes | Breakout box |
6,078 | In order to make reliable electrical connections to the steering wheel mounted air bag and other electrical controls there is a device known as a 'clock spring'. Clocksprings generally consist of a flat multicore cable wound in a spiral shape similar to a clock spring, hence the name,[1]. The part gets its name as it resembles the spiral wound main spring of a clock however its function is to be a flexible electrical connector; not to be a spring to store energy | Clockspring |
6,079 | An electrical crimp is a type of solderless electrical connection which uses physical pressure to join the contacts.
Crimp connectors are typically used to terminate stranded wire.
History
The technique of soldering wires has remained common for at least a century, however crimp terminals came into use in the middle of the 20th century | Crimp (electrical) |
6,080 | A crocodile clip or alligator clip is a plier-like spring-tensioned metal clip with elongated, serrated jaws that is used for creating a temporary electrical connection. This simple mechanical device gets its name from the resemblance of its serrated jaws to the toothed jaws of a crocodile or alligator. It is used to clamp and grab onto a bare electrical cable to an lead on a battery or some other electrical component | Crocodile clip |
6,081 | The D-subminiature or D-sub is a common type of electrical connector. They are named for their characteristic D-shaped metal shield. When they were introduced, D-subs were among the smallest connectors used on computer systems | D-subminiature |
6,082 | The D subminiature military is a Cannon connector used in aerospace, military, aviation, and electric cars. It is also manufactured by other companies besides Cannon ITT. It has seven pins in a housing the same size as the standard 9-pin or 15-pin D-sub | D-subminiature military |
6,083 | An edge connector is the portion of a printed circuit board (PCB) consisting of traces leading to the edge of the board that are intended to plug into a matching socket. The edge connector is a money-saving device because it only requires a single discrete female connector (the male connector is formed out of the edge of the PCB), and they also tend to be fairly robust and durable. They are commonly used in computers for expansion slots for peripheral cards, such as PCI, PCI Express, and AGP cards | Edge connector |
6,084 | An enhanced mini-USB (EMU) connector is a type of hybrid electrical connector which carries Universal Serial Bus data and power as well as other connections such as bidirectional audio. It was invented for and is mainly used on mobile phones. Motorola, HTC Corporation, and other mobile phone manufacturers use EMU connectors | Enhanced mini-USB |
6,085 | Euroblock, short for "European-style terminal block", is an extra-low voltage disconnectable (or plugable) connector and terminal block combination commonly used for microphone- and line level-audio signals, and for control signals such as RS-232 or RS-485.
It is also known as the Phoenix connector from one of the manufacturers, Phoenix Contact, a German company whose US operations were established in 1981 in Harrisburg, Pennsylvania; though there are many manufacturers who make compatible products. It is also known as "Combicon", which might be a Phoenix brand name; or more generically as a "pluggable terminal block" or a "two piece terminal block" | Euroblock |
6,086 | Expansion springs are used as electrical connectors in some children's electronics kits. They are easy to use with bare fingers, they accept multiple wires, they require no learning or expertise to use them, and the cost is low.
Kits employing these connectors also have the secondary advantage that many additional projects can be made if the components are removed from the springs, and components strung between the springs instead of wires | Expansion spring |
6,087 | F-Crimp is a type of solderless electrical crimp connection. It is not related to the F connector common in RF equipment.
It is sometimes referred to as open-barrel, which is technically a more general term including crimp types such as Weather Pack and Metri Pack | F crimp |
6,088 | The FastPort was a proprietary polyconnection interface used on all Sony Ericsson cellphones between 2005 and 2010. Designed in response to Nokia's proprietary Pop-Port, FastPort provided data transfer, charging, headset and speaker connections through a common interface. It was discontinued in 2010 and replaced with a micro-USB for charging and data, and a TRRS connection for audio (headphones) | FastPort |
6,089 | A pin header (or simply header) is a form of electrical connector. A male pin header consists of one or more rows of metal pins molded into a plastic base, often 2. 54 mm (0 | Pin header |
6,090 | An insulation-displacement contact (IDC), also known as insulation-piercing contact (IPC), is an electrical connector designed to be connected to the conductor(s) of an insulated cable by a connection process which forces a selectively sharpened blade or blades through the insulation, bypassing the need to strip the conductors of insulation before connecting. When properly made, the connector blade cold-welds to the conductor, making a theoretically reliable gas-tight connection.
History
Modern IDC technology developed after and was influenced by research on wire-wrap and crimp connector technology originally pioneered by Western Electric, Bell Telephone Labs, and others | Insulation-displacement connector |
6,091 | Fischer Connectors is a Swiss multinational company that designs, manufactures and distributes electrical connectors and optical fiber connectors, cable assemblies and electronic and connectivity systems. Founded in 1954, the company has its main manufacturing facility and R&D Center in Saint-Prex, Switzerland, and eight subsidiaries employing 550 people worldwide (including 300 at the group headquarters in Saint-Prex), with cable assembly facilities in Europe, North America and Asia Pacific. Fischer Connectors is part of Conextivity Group | Fischer Connectors |
6,092 | Flat Flexible Cable, or FFC, refers to any variety of electrical cable that is both flat and flexible, with flat solid conductors. A flexible flat cable is a type of flexible electronics. However, the term FFC usually refers to the extremely thin flat cable often found in high-density electronic applications like laptops and cell phones | Flexible flat cable |
6,093 | A Fuzz Button is a high performance electrical connection material used to connect two parts of an electrical circuit together, for example an IC to a PCB or two PCBs to each other. Fuzz Buttons consist of a single strand of gold-plated beryllium copper wire compressed into a dense, sponge-like cylindrical shape. Their diameter can range from a few tenths of a millimetre to a millimetre | Fuzz button |
6,094 | A bipin or bi-pin (sometimes referred to as two-pin, bipin cap or bipin socket) is a type of lamp fitting. They are included in the IEC standard "IEC 60061 Lamp caps and holders together with gauges for the control of interchangeability and safety". They are used on many small incandescent light bulbs (especially halogen lamps), and for starters on some types of fluorescent lights | Bi-pin lamp base |
6,095 | A bipin or bi-pin (sometimes referred to as two-pin, bipin cap or bipin socket) is a type of lamp fitting. They are included in the IEC standard "IEC 60061 Lamp caps and holders together with gauges for the control of interchangeability and safety". They are used on many small incandescent light bulbs (especially halogen lamps), and for starters on some types of fluorescent lights | Bi-pin lamp base |
6,096 | A bipin or bi-pin (sometimes referred to as two-pin, bipin cap or bipin socket) is a type of lamp fitting. They are included in the IEC standard "IEC 60061 Lamp caps and holders together with gauges for the control of interchangeability and safety". They are used on many small incandescent light bulbs (especially halogen lamps), and for starters on some types of fluorescent lights | Bi-pin lamp base |
6,097 | A bipin or bi-pin (sometimes referred to as two-pin, bipin cap or bipin socket) is a type of lamp fitting. They are included in the IEC standard "IEC 60061 Lamp caps and holders together with gauges for the control of interchangeability and safety". They are used on many small incandescent light bulbs (especially halogen lamps), and for starters on some types of fluorescent lights | Bi-pin lamp base |
6,098 | The game port is a device port that was found on IBM PC compatible and other computer systems throughout the 1980s and 1990s. It was the traditional connector for joystick input, and occasionally MIDI devices, until made obsolete by USB in the late 1990s.
Originally located on a dedicated Game Control Adapter expansion card, the game port was later integrated with PC sound cards, and still later on the PC's motherboard | Game port |
6,099 | In electrical and mechanical trades and manufacturing, each half of a pair of mating connectors or fasteners is conventionally assigned the designation male or female. The female connector is generally a receptacle that receives and holds the male connector. Sometimes the terms plug and socket or jack are used, particularly in reference to electrical connectors | Gender of connectors and fasteners |
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