electro-, electr-, electri-
(Greek > Latin: electric, electricity; from amber, resembling amber, generated from amber which when rubbed vigorously [as by friction], produced the effect of static electricity)
Electronics in our lives consists of numerous tools
Equipment which we use everyday relies on electronics to function including calculators, car controls, cameras, washing machines, medical scanners, mobile telephones, radar systems, computers; as well as many other applications or devices which are listed in this unit.
2. A particular type of equipment used in electric power systems to detect abnormal conditions and to initiate appropriate corrective actions.
2. A charge distribution that produces an electric field equivalent to what is produced by two electric dipoles whose dipole moments have the same magnitude, but point in opposite directions and which are separate from each other by a small distance.
2. An instrument for focusing beams of charged particles which has four electrodes with alternately positive and negative polarity; used in electron microscopes and particle accelerators.
3. An apparatus that uses four electrodes set in an alternating positive-negative polarity series to focus the beams of charged particles employed in electron microscopes and particle accelerators.
2. A process in which an atom produces or absorbs quadrupole radiation when it changes from one energy level to another.
A busbar is a heavy, rigid metallic conductor, usually uninsulated, which is used to carry a large electric current or to make a common connection between several electrical circuits.
2. An electromechanical or solid-state device operated by variations in the input which, in turn, operate or control other devices connected to the output.
They are used in a wide variety of applications throughout industry; such as, in telephone exchanges, digital computers, motor and sequencing controls, and automation systems.
Highly sophisticated relays are utilized to protect electric power systems against trouble and power blackouts; as well as, to regulate and to control the generation and distribution of electrical power.
In private residences, relays are used in refrigerators, automatic washers, dishwashers, and heat and air-conditioning controls.3. An electromechanical switch operated by a flow of electricity in one circuit and controlling the flow of electricity in another circuit.
A relay composed essentially of an electromagnet with a soft iron bar, called an armature, held close to it.
A movable contact is connected to the armature in such a way that the contact is held in its normal position by a spring and when the electromagnet is energized, it exerts a force on the armature that overcomes the pull of the spring and moves the contact so as to either complete or to break a circuit.
A relay is an electrical device such that electric current flowing through it in one circuit can switch on and off a current in a second circuit
2. The opposition to a flow of electric current through a circuit component, medium, or substance.
It is the magnitude of the actual part of the impedance and is measured in ohms.
2. A target-seeking method in which an operator directs the radar beam by varying the phase or amplitude of the currents flowing into various components of its antenna.