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Electrical engineering
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Distribution board
A distribution board (also known as panelboard, breaker panel, or
electric panel) is a component of an electricity supply system that divides
an electrical power feed into subsidiary circuits, while providing a
protective fuse or circuit breaker for each circuit in a common enclosure.
Dynamo
A dynamo is an electrical generator that produces direct current with the
use of a commutator.
Wire
A wire is a single, usually cylindrical, flexible strand or rod of metal.
Electrical wiring
("Wiring" redirects here. For the software development platform, see
Wiring (development platform).)(This article is about building wiring. For
power distribution, see Electric power transmission and Electric power
distribution.) Building wiring is the electrical wiring and associated
devices such as switches, meters and light fittings used in buildings or
other structures.
Residual-current device
A residual-current device (RCD), or residual-current circuit breaker
(RCCB), is a device that instantly breaks an electric circuit to prevent
serious harm from an ongoing electric shock.
IP Code
The IP Code, International Protection Marking, IEC standard 60529,
sometimes interpreted as Ingress Protection Marking, classifies and rates
the degree of protection provided against intrusion (body parts such as
hands and fingers), dust, accidental contact, and water by mechanical
casings and electrical enclosures.
Chiclet keyboard
A chiclet keyboard, or island-style keyboard, is a type of input device for
electronic systems such as personal computers, calculators and remote
controls that uses keys in the shape of small squares with rounded
corners and straight sides, in the style of Chiclets, an American chewing
gum brand.
Mesh analysis
Mesh analysis (or the mesh current method) is a method that is used to
solve planar circuits for the currents (and indirectly the voltages) at any
place in the circuit.
Alternating current
Alternating current (AC), is an electric current in which the flow of electric
charge periodically reverses direction, whereas in direct current (DC, also
dc), the flow of electric charge is only in one direction.
Direct current
Direct current (DC) is the unidirectional flow of electric charge.
Electric power
Electric power is the rate, per unit time, at which electrical energy is
transferred by an electric circuit.
Electric motor
An electric motor is an electrical machine that converts electrical energy
into mechanical energy.
Electrical network
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).
Ohm's law
Ohm's law states that the current through a conductor between two
points is directly proportional to the voltage across the two points.
Printed circuit board
A printed circuit board (PCB) mechanically supports and electrically
connects electronic components using conductive tracks, pads and other
features etched from copper sheets laminated onto a non-conductive
substrate.
Smith chart
The Smith chart, invented by Phillip H.
Solid-state electronics
Solid-state electronics are those circuits or devices built entirely from
solid materials and in which the electrons, or other charge carriers, are
confined entirely within the solid material.
Ground (electricity)
In electrical engineering, ground or earth is the reference point in an
electrical circuit from which voltages are measured, a common return
path for electric current, or a direct physical connection to the Earth.
Rectifier
A rectifier is an electrical device that converts alternating current (AC),
which periodically reverses direction, to direct current (DC), which flows
in only one direction.
Bimetallic strip
A bimetallic strip is used to convert a temperature change into
mechanical displacement.
Kelvin bridge
A Kelvin bridge, also called a Kelvin double bridge and in some countries
a Thomson bridge, is a measuring instrument used to measure unknown
electrical resistors below 1 ohm.
AC power plugs and sockets
AC power plugs and sockets are devices that allow electrically operated
equipment to be connected to the primary alternating current (AC)
power supply in a building.
Diesel-electric transmission
Diesel-electric transmission, or diesel-electric powertrain is used by a
number of vehicle and ship types for providing locomotion.
Electrical impedance
Electrical impedance is the measure of the opposition that a circuit
presents to a current when a voltage is applied.