122 relations: Alternating current, Amorphous solid, Ampere, Arthur Claude Ruge, Ayrton-Perry winding, Biasing, Bifilar coil, Bill of materials, Calibration, Capacitance, Carbon microphone, Cermet, Chromel, Circuit design, Circuit diagram, Control grid, Decimal separator, Diesel locomotive, Dummy load, Dynamic braking, E-series of preferred numbers, Edward E. Simmons, Electric generator, Electrical impedance, Electrical network, Electrical resistance and conductance, Electrical resistivity and conductivity, Electromagnetic coil, Electromagnetic induction, Electronic circuit, Electronic color code, Electronic component, Electronics, Engineering tolerance, Flicker noise, Fluctuation-dissipation theorem, Four-terminal sensing, Galvanometer, Geometric progression, Georg Ohm, Heat sink, Helix, Humistor, Inductance, Infinitesimal strain theory, Inrush current, Instrumentation amplifier, Integrated circuit, International Electrotechnical Commission, International System of Units, ..., Iron–hydrogen resistor, Johnson–Nyquist noise, Kelvin, Laboratory, Laser trimming, Lead(II) oxide, Letter and digit code, Liquid rheostat, Low-noise amplifier, Manganin, Metal electrode leadless face, Micrometre, Multimeter, Nichrome, Noise (electronics), Ohm, Ohm's law, Ohmmeter, Omega, Operating temperature, Order of magnitude, Overvoltage, Passivity (engineering), Phenol formaldehyde resin, Phosphor bronze, Photoresist, Photoresistor, Piezoresistive effect, Portland cement, Potential, Potentiometer, Power (physics), Preamplifier, Preferred number, Primary standard, Printed circuit board, Pull-up resistor, Quantum Hall effect, Quantum tunnelling composite, RadioShack, Radix point, Ruthenium(IV) oxide, Schematic, Screen printing, Shot noise, Significant figures, Sintering, Sputtering, Strain gauge, Surface-mount technology, Tantalum, Tantalum nitride, Temperature coefficient, Terminal (electronics), Thermistor, Thermocouple, Thermoelectric effect, Through-hole technology, Transmission line, Trimmer (electronics), Ultraviolet, Vacuum deposition, Vacuum tube, Vitreous enamel, Volt, Voltage divider, Voltage regulator, Von Klitzing, Watt, Wheatstone bridge, Y-Δ transform, Zero-ohm link. Expand index (72 more) » « Shrink index
Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction.
In condensed matter physics and materials science, an amorphous (from the Greek a, without, morphé, shape, form) or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal.
The ampere (symbol: A), often shortened to "amp",SI supports only the use of symbols and deprecates the use of abbreviations for units.
Arthur Claude Ruge (pronounced ROO-gee) (July 28, 1905 – April 3, 2000) was an American mechanical engineer and inventor who developed and pioneered the modern bonded wire resistance strain gauge.
Ayrton-Perry winding is a type of bifilar winding pattern used in winding wire on forms to make electronic components.
Biasing in electronics means establishing predetermined voltages or currents at various points of an electronic circuit for the purpose of establishing proper operating conditions in electronic components.
A bifilar coil is an electromagnetic coil that contains two closely spaced, parallel windings.
A bill of materials or product structure (sometimes bill of material, BOM or associated list) is a list of the raw materials, sub-assemblies, intermediate assemblies, sub-components, parts, and the quantities of each needed to manufacture an end product.
Calibration in measurement technology and metrology is the comparison of measurement values delivered by a device under test with those of a calibration standard of known accuracy.
Capacitance is the ratio of the change in an electric charge in a system to the corresponding change in its electric potential.
The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal.
A cermet is a composite material composed of ceramic (cer) and metal (met) materials.
Chromel is an alloy made of approximately 90 percent nickel and 10 percent chromium that is used to make the positive conductors of ANSI Type E (chromel-constantan) and K (chromel-alumel) thermocouples.
The process of circuit design can cover systems ranging from complex electronic systems all the way down to the individual transistors within an integrated circuit.
A circuit diagram (electrical diagram, elementary diagram, electronic schematic) is a graphical representation of an electrical circuit.
The control grid is an electrode used in amplifying thermionic valves (vacuum tubes) such as the triode, tetrode and pentode, used to control the flow of electrons from the cathode to the anode (plate) electrode.
A decimal separator is a symbol used to separate the integer part from the fractional part of a number written in decimal form.
A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine.
A dummy load is a device used to simulate an electrical load, usually for testing purposes.
Dynamic braking is the use of an electric traction motor as a generator when slowing a vehicle such as an electric or diesel-electric locomotive.
The E-series is a system of preferred numbers (also called preferred values) derived for use in electronic components.
Edward E. Simmons Jr. (1911 in Los Angeles, California – May 18, 2004, in Pasadena, California) was an electrical engineer and the inventor of the bonded wire resistance strain gauge.
In electricity generation, a generator is a device that converts motive power (mechanical energy) into electrical power for use in an external circuit.
Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.
An electrical network is an interconnection of electrical components (e.g. batteries, resistors, inductors, capacitors, switches) or a model of such an interconnection, consisting of electrical elements (e.g. voltage sources, current sources, resistances, inductances, capacitances).
The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.
Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) is a fundamental property that quantifies how strongly a given material opposes the flow of electric current.
An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil, spiral or helix.
Electromagnetic or magnetic induction is the production of an electromotive force (i.e., voltage) across an electrical conductor in a changing magnetic field.
An electronic circuit is composed of individual electronic components, such as resistors, transistors, capacitors, inductors and diodes, connected by conductive wires or traces through which electric current can flow.
An electronic color code is used to indicate the values or ratings of electronic components, usually for resistors, but also for capacitors, inductors, diodes and others.
An electronic component is any basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields.
Electronics is the discipline dealing with the development and application of devices and systems involving the flow of electrons in a vacuum, in gaseous media, and in semiconductors.
Engineering tolerance is the permissible limit or limits of variation in.
Flicker noise is a type of electronic noise with a 1/f power spectral density.
The fluctuation–dissipation theorem (FDT) or fluctuation–dissipation relation (FDR) is a powerful tool in statistical physics for predicting the behavior of systems that obey detailed balance.
Four-terminal sensing (4T sensing), 4-wire sensing, or 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make more accurate measurements than the simpler and more usual two-terminal (2T) sensing.
A galvanometer is an electromechanical instrument used for detecting and indicating electric current.
In mathematics, a geometric progression, also known as a geometric sequence, is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.
Georg Simon Ohm (16 March 1789 – 6 July 1854) was a German physicist and mathematician.
A heat sink (also commonly spelled heatsink) is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium, often air or a liquid coolant, where it is dissipated away from the device, thereby allowing regulation of the device's temperature at optimal levels.
A helix, plural helixes or helices, is a type of smooth space curve, i.e. a curve in three-dimensional space.
A humistor is a type of variable resistor whose resistance varies based on humidity.
In electromagnetism and electronics, inductance is the property of an electrical conductor by which a change in electric current through it induces an electromotive force (voltage) in the conductor.
In continuum mechanics, the infinitesimal strain theory is a mathematical approach to the description of the deformation of a solid body in which the displacements of the material particles are assumed to be much smaller (indeed, infinitesimally smaller) than any relevant dimension of the body; so that its geometry and the constitutive properties of the material (such as density and stiffness) at each point of space can be assumed to be unchanged by the deformation.
Inrush current, input surge current, or switch-on surge is the maximal instantaneous input current drawn by an electrical device when first turned on.
An instrumentation (or instrumentational) amplifier is a type of differential amplifier that has been outfitted with input buffer amplifiers, which eliminate the need for input impedance matching and thus make the amplifier particularly suitable for use in measurement and test equipment.
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.
The International Electrotechnical Commission (IEC; in French: Commission électrotechnique internationale) is an international standards organization that prepares and publishes International Standards for all electrical, electronic and related technologies – collectively known as "electrotechnology".
The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.
An iron–hydrogen resistor consists of a hydrogen-filled glass bulb (similar to a light bulb), in which an iron wire is located.
Johnson–Nyquist noise (thermal noise, Johnson noise, or Nyquist noise) is the electronic noise generated by the thermal agitation of the charge carriers (usually the electrons) inside an electrical conductor at equilibrium, which happens regardless of any applied voltage.
The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.
A laboratory (informally, lab) is a facility that provides controlled conditions in which scientific or technological research, experiments, and measurement may be performed.
Laser trimming is the manufacturing process of using a laser to adjust the operating parameters of an electronic circuit.
Lead(II) oxide, also called lead monoxide, is the inorganic compound with the molecular formula PbO.
The letter and digit code for resistance and capacitance values and tolerances, which is also known as RKM code or "R notation", is a notation to specify resistor and capacitor values defined in the international standard IEC 60062 (formerly IEC 62) since 1952.
A liquid rheostat or water rheostat or salt water rheostat is a type of variable resistor.
A low-noise amplifier (LNA) is an electronic amplifier that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio.
Metal electrode leadless face (MELF) is a type of leadless cylindrical electronic surface mount device that is metallized at its ends.
The micrometre (International spelling as used by the International Bureau of Weights and Measures; SI symbol: μm) or micrometer (American spelling), also commonly known as a micron, is an SI derived unit of length equaling (SI standard prefix "micro-".
A multimeter or a multitester, also known as a VOM (volt-ohm-milliammeter), is an electronic measuring instrument that combines several measurement functions in one unit.
Nichrome (NiCr, nickel-chrome, chrome-nickel, etc.) is any of various alloys of nickel, chromium, and often iron (and possibly other elements).
In electronics, noise is an unwanted disturbance in an electrical signal.
The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm.
Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
An ohmmeter is an electrical instrument that measures electrical resistance, the opposition to an electric current.
Omega (capital: Ω, lowercase: ω; Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the 24th and last letter of the Greek alphabet.
An operating temperature is the temperature at which an electrical or mechanical device operates.
An order of magnitude is an approximate measure of the number of digits that a number has in the commonly-used base-ten number system.
When the voltage in a circuit or part of it is raised above its upper design limit, this is known as overvoltage.
Passivity is a property of engineering systems, used in a variety of engineering disciplines, but most commonly found in analog electronics and control systems.
Phenol formaldehyde resins (PF) or phenolic resins are synthetic polymers obtained by the reaction of phenol or substituted phenol with formaldehyde.
Phosphor bronze is an alloy of copper with 0.5–11% of tin and 0.01–0.35% phosphorus.
A photoresist is a light-sensitive material used in several processes, such as photolithography and photoengraving, to form a patterned coating on a surface.
A photoresistor (or light-dependent resistor, LDR, or photo-conductive cell) is a light-controlled variable resistor.
The piezoresistive effect is a change in the electrical resistivity of a semiconductor or metal when mechanical strain is applied.
Portland cement is the most common type of cement in general use around the world as a basic ingredient of concrete, mortar, stucco, and non-specialty grout.
Potential generally refers to a currently unrealized ability.
A potentiometer is a three-terminal resistor with a sliding or rotating contact that forms an adjustable voltage divider.
In physics, power is the rate of doing work, the amount of energy transferred per unit time.
A preamplifier (preamp or "pre") is an electronic amplifier that converts a weak electrical signal into an output signal strong enough to be noise-tolerant and strong enough for further processing, or for sending to a power amplifier and a loudspeaker.
In industrial design, preferred numbers (also called preferred values or preferred series) are standard guidelines for choosing exact product dimensions within a given set of constraints.
A primary standard in metrology is a standard that is sufficiently accurate such that it is not calibrated by or subordinate to other standards.
A printed circuit board (PCB) mechanically supports and electrically connects electronic components or electrical components using conductive tracks, pads and other features etched from one or more sheet layers of copper laminated onto and/or between sheet layers of a non-conductive substrate.
In electronic logic circuits, a pull-up resistor is a resistor used to ensure a known state for a signal.
The quantum Hall effect (or integer quantum Hall effect) is a quantum-mechanical version of the Hall effect, observed in two-dimensional electron systems subjected to low temperatures and strong magnetic fields, in which the Hall conductance undergoes quantum Hall transitions to take on the quantized values where is the channel current, is the Hall voltage, is the elementary charge and is Planck's constant.
Quantum tunnelling composites (or QTCs) are composite materials of metals and non-conducting elastomeric binder, used as pressure sensors.
RadioShack, formally RadioShack Corporation, is the trade name of an American retailer founded in 1921, which operates a chain of electronics stores.
In mathematics and computing, a radix point (or radix character) is the symbol used in numerical representations to separate the integer part of a number (to the left of the radix point) from its fractional part (to the right of the radix point).
Ruthenium(IV) oxide is the inorganic compound with the formula RuO2.
A schematic, or schematic diagram, is a representation of the elements of a system using abstract, graphic symbols rather than realistic pictures.
Screen printing is a printing technique whereby a mesh is used to transfer ink onto a substrate, except in areas made impermeable to the ink by a blocking stencil.
Shot noise or Poisson noise is a type of electronic noise which can be modeled by a Poisson process.
The significant figures (also known as the significant digits) of a number are digits that carry meaning contributing to its measurement resolution.
Clinker nodules produced by sintering Sintering is the process of compacting and forming a solid mass of material by heat or pressure without melting it to the point of liquefaction.
Sputtering is a process whereby particles are ejected from a solid target material due to bombardment of the target by energetic particles, particularly gas ions in a laboratory.
A strain gauge is a device used to measure strain on an object.
Surface-mount technology (SMT) is a method for producing electronic circuits in which the components are mounted or placed directly onto the surface of printed circuit boards (PCBs).
Tantalum is a chemical element with symbol Ta and atomic number 73.
Tantalum nitride (TaN) is an inorganic chemical compound.
A temperature coefficient describes the relative change of a physical property that is associated with a given change in temperature.
A terminal is the point at which a conductor from an electrical component, device or network comes to an end and provides a point of connection to external circuits.
A thermistor is a type of resistor whose resistance is dependent on temperature, more so than in standard resistors.
A thermocouple is an electrical device consisting of two dissimilar electrical conductors forming electrical junctions at differing temperatures.
The thermoelectric effect is the direct conversion of temperature differences to electric voltage and vice versa via a thermocouple.
Through-hole technology (tht), also spelled "thru-hole", refers to the mounting scheme used for electronic components that involves the use of leads on the components that are inserted into holes drilled in printed circuit boards (PCB) and soldered to pads on the opposite side either by manual assembly (hand placement) or by the use of automated insertion mount machines.
In communications and electronic engineering, a transmission line is a specialized cable or other structure designed to conduct alternating current of radio frequency, that is, currents with a frequency high enough that their wave nature must be taken into account.
A trimmer is a miniature adjustable electrical component.
Ultraviolet (UV) is electromagnetic radiation with a wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.
Vacuum deposition is a family of processes used to deposit layers of material atom-by-atom or molecule-by-molecule on a solid surface.
In electronics, a vacuum tube, an electron tube, or just a tube (North America), or valve (Britain and some other regions) is a device that controls electric current between electrodes in an evacuated container.
Vitreous enamel, also called porcelain enamel, is a material made by fusing powdered glass to a substrate by firing, usually between.
The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.
In electronics, a voltage divider (also known as a potential divider) is a passive linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (Vin).
A voltage regulator is an electronic circuit that provides a stable DC voltage independent of the load current, temperature and AC line voltage variations.
Von Klitzing is a surname.
The watt (symbol: W) is a unit of power.
A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component.
The Y-Δ transform, also written wye-delta and also known by many other names, is a mathematical technique to simplify the analysis of an electrical network.
A zero-ohm link or zero-ohm resistor is a wire link used to connect traces on a printed circuit board that is packaged in the same physical package format as a resistor.
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