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a form of semiconductor diode in which at a critical reverse voltage a large reverse current can flow.

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Watt's Law states that: Power (in Watts) = Voltage (in Volts) x Current (in Amps) P = V I Combining with Ohm's law we get two other useful forms: P = V*V / R and P = I*I*R Power is a measurement of the amount of work that can be done with the circuit, such as turning a motor or lighiting a light bulb.Oct 4, 2009

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the SI unit of power, equivalent to one joule per second, corresponding to the power in an electric circuit in which the potential difference is one volt and the current one ampere.

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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. A typical multimeter can measure voltage, current, and resistance. Analog multimeters use a microammeter with a moving pointer to display readings.

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an instrument for measuring electric potential in volts.

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an electromotive force or potential difference expressed in volts.

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1. the SI unit of electromotive force, the difference of potential that would drive one ampere of current against one ohm resistance.

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What are Variable Resistors used for? Simply put, a variable resistor is able to have its electrical resistance adjusted. These devices are used when working with electrical circuitry because they help to control voltage and/or currents. They specifically work with voltage and currents that are a part of the circuit.Jun 23, 2019

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Valence shell is the outermost shell of every element. Atom of every element have different electronic configurations based on the atomic number of each element. Electronic configuration refers to the distribution of electrons in various shells/orbits/energy levels of every atom.Dec 15, 2014

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trace and correct faults in a mechanical or electronic system.

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a semiconductor device with three connections, capable of amplification in addition to rectification.

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The Static Switch makes a rapid switch from one source to the other in the event of a fault to the power supply used to power the load, or carry out test/maintenance. One of the two sources can be designated as the preferred power supply, to which the Static Switch will transfer the load.

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A breadboard is a construction base for prototyping of electronics. ... In the 1970s the solderless breadboard ( a.k.a. plugboard, a terminal array board) became available and nowadays the term "breadboard" is commonly used to refer to these. Because the solderless breadboard does not require soldering, it is reusable.

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a device converting solar radiation into electricity.

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A combination circuit is one that has a "combination" of series and parallel paths for the electricity to flow. Its properties are a combination of the two. In this example, the parallel section of the circuit is like a sub-circuit and actually is part of an over-all series circuit.

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A series circuit is a closed circuit in which the current follows one path, as opposed to a parallel circuit where the circuit is divided into two or more paths. In a series circuit, the current through each load is the same and the total voltage across the circuit is the sum of the voltages across each load.

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A rechargeable battery, storage battery, or secondary cell, (or archaically accumulator) is a type of electrical battery which can be charged, discharged into a load, and recharged many times, as opposed to a disposable or primary battery, which is supplied fully charged and discarded after use.

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An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit.

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A schematic diagram is a picture that represents the components of a process, device, or other object using abstract, often standardized symbols and lines. Although schematic diagrams are commonly associated with electrical circuits, many examples can be found in other industries.Jan 29, 2019

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a device having a designed resistance to the passage of an electric current.

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the degree to which a substance or device opposes the passage of an electric current, causing energy dissipation. Ohm's law resistance (measured in ohms) is equal to the voltage divided by the current.

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a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.

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an electric cell that produces current by an irreversible chemical reaction.

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electrical energy supplied to an area, building, etc.

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Polarity in a Parallel Circuit. Just as in series circuits, electrical current flows “from negative to positive” through each of the load components in a parallel circuit. ... Note that the polarity of each of the resistors is the same as the polarity of the source.

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a law stating that electric current is proportional to voltage and inversely proportional to resistance.

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a law stating that electric current is proportional to voltage and inversely proportional to resistance.

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an instrument for measuring electrical resistance.

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the SI unit of electrical resistance, expressing the resistance in a circuit transmitting a current of one ampere when subjected to a potential difference of one volt.

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a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.

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a machine, especially one powered by electricity or internal combustion, that supplies motive power for a vehicle or for some other device with moving parts.

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a device for giving light, either one consisting of an electric bulb together with its holder and shade or cover, or one burning gas or a liquid fuel and consisting of a wick or mantle and a glass shade.

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a light-emitting diode (a semiconductor diode which glows when a voltage is applied).

"light sources can be fluorescent tubes, optical fibers, or LEDs"

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an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

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an electronic circuit formed on a small piece of semiconducting material, performing the same function as a larger circuit made from discrete components.

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a block of material, typically glass or ceramic, enclosing a wire carrying an electric current where it crosses a support.

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Due to its expansion of scope into so many related fields, it is simply referred to by the letters I-E-E-E (pronounced Eye-triple-E), except on legal business documents. As of 2018, it is the world's largest association of technical professionals[5] with more than 423,000 members in over 160 countries around the world.[6] Its objectives are the educational and technical advancement of electrical and electronic engineering, telecommunications, computer engineering and allied disciplines.[3][7]

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An incandescent light bulb, incandescent lamp or incandescent light globe is an electric light with a wire filament heated until it glows. The filament is enclosed in a bulb to protect the filament from oxidation. Current is supplied to the filament by terminals or wires embedded in the glass.

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a car with a gasoline engine and an electric motor, each of which can propel it.

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a dynamo or similar machine for converting mechanical energy into electricity.

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Gas-discharge lamps are a family of artificial light sources that generate light by sending an electric discharge through an ionized gas, a plasma. Typically, such lamps use a noble gas (argon, neon, krypton, and xenon) or a mixture of these gases.

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A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.

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a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

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An electrode is a solid electric conductor that carries electric current into non-metallic solids, or liquids, or gases, or plasmas, or vacuums. Electrodes are typically good electric conductors, but they need not be metals. Cathode and Anode.

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Electricity is the set of physical phenomena associated with the presence and motion of matter that has a property of electric charge. In early days, electricity was considered as being unrelated to magnetism.

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Electrical engineering is one of the newer branches of engineering, and dates back to the late 19th century. It is the branch of engineering that deals with the technology of electricity. Electrical engineers work on a wide range of components, devices and systems, from tiny microchips to huge power station generators.Aug 27, 2014

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an electric current flowing in one direction only.

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a semiconductor device with two terminals, typically allowing the flow of current in one direction only.

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Current is the rate of flow of electricity. The unit of current is the ampere (A) which is defined as 1 ampere = 1 coulomb per second.Jan 15, 2020

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the SI unit of electric charge, equal to the quantity of electricity conveyed in one second by a current of one ampere.

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A continuity tester is an item of electrical test equipment used to determine if an electrical path can be established between two points; that is if an electrical circuit can be made. The circuit under test is completely de-energized prior to connecting the apparatus.

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a material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this.

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A compact fluorescent lamp (CFL), also called compact fluorescent light, energy-saving light and compact fluorescent tube, is a fluorescent lamp designed to replace an incandescent light bulb; some types fit into light fixtures designed for incandescent bulbs.

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A printed circuit board (PCB) mechanically supports and electrically connects electrical or electronic 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. Components are generally soldered onto the PCB to both electrically connect and mechanically fasten them to it.

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An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or using electrical energy to cause chemical reactions.

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A capacitor is a device that stores electrical energy in an electric field. It is a passive electronic component with two terminals. The effect of a capacitor is known as capacitance.

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A battery is an electrochemical cell (or enclosed and protected material) that can be charged electrically to provide a static potential for power or released electrical charge when needed. A battery generally consists of an anode, a cathode, and an electrolyte.

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An atom a fundamental piece of matter. ... An atom itself is made up of three tiny kinds of particles called subatomic particles: protons, neutrons, and electrons. The protons and the neutrons make up the center of the atom called the nucleus and the electrons fly around above the nucleus in a small cloud.

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An ammeter (from Ampere Meter) is a measuring instrument used to measure the current in a circuit. Electric currents are measured in amperes (A), hence the name. Instruments used to measure smaller currents, in the milliampere or microampere range, are designated as milliammeters or microammeters.

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American wire gauge (AWG), also known as the Brown & Sharpe wire gauge, is a logarithmic stepped standardized wire gauge system used since 1857, predominantly in North America, for the diameters of round, solid, nonferrous, electrically conducting wire.

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an electric current that reverses its direction many times a second at regular intervals, typically used in power supplies.