Electronics (Mike Jaroch)
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See COPPER LOSSES .
Obsolete synchros with reverse rotation and limited torque capabilities .
In Boolean algebra, combining a quantity with itself either by logical addition or logical multiplication will result in a logical sum or product that is the equivalent of the quantity (for
example, A + A = A; A • A = A) .
In Boolean algebra, the law which states that any expression is equal to itself
In a parametric amplifier, the difference between the input signal and the pump signal frequency. Also called the LOWER-SIDEBAND FREQUENCY .
Usually a narrow-bandwidth IF amplifier that is tuned to one of the output frequencies produced by the mixer .
Any field-effect transistor that has an insulated gate .
An undesired frequency capable of producing the desired frequency through
The total opposition offered to the flow of an alternating current. It may consist of any combination of resistance, inductive reactance, and capacitive reactance. The symbol for impedance is Z  .
The inward bursting of a CRT because of high vacuum. The opposite of explosion .
Applied to the condition that exists when two waves of the same frequency pass through their maximum and minimum values of like polarity at the same instant .
A meter permanently installed in a circuit; used to monitor circuit operation .
(1) The wave that strikes the surface of a medium. (2) The wave that travels from the sending end to the receiving end of a transmission line .
Refers to radiation on a broad band of frequencies .
INDEX OF REFRACTION
The degree of bending of an RF wave when passing from one medium to
Equipment in radar that provides a visual presentation of target position information .
INDIRECTLY HEATED CATHODE
Same as the directly heated cathode with one exception: The hot filament raises the temperature of the sleeve around the filament; the sleeve then becomes the electron emitter .
An electrostatic charge produced on an object by the electric field that surrounds a nearby object .
Current caused by the relative motion between a conductor and a magnetic field .
INDUCED ELECTROMOTIVE FORCE
The electromotive force induced in a conductor because of the relative motion between the conductor and a magnetic field .
See INDUCED ELECTROMOTIVE FORCE .
A MOSFET in which there is no actual channel between the source and the drain. This MOSFET is constructed by making the channel of the same type of material as the substrate .
The property of a circuit that tends to oppose a change in the existing current flow. The symbol for inductance is L  .
An ac bridge circuit used to measure an unknown value of inductance .
The act or process of producing voltage and current by the relative motion of a magnetic field across a conductor .
The electromagnetic field that is produced about an antenna when current and
voltage are present on the same antenna .
The losses that occur when the electromagnetic field around a conductor cuts
through nearby metallic objects and induces a current into that object .
A simple, rugged, ac motor with desirable characteristics. The rotor is energized by transformer action (induction) from the stator. Induction motors are used more than any other type .
Coupling of two coils by means of magnetic lines of force. In transformers,
coupling applied through magnetic lines of force between the primary and secondary windings .
The opposition to the flow of an alternating current caused by the inductance of a circuit, expressed in ohms. Identified by the symbol X L  .
The physical tendency of a body in motion to remain in motion and a body at rest to remain at rest unless acted upon by an outside force (Newton's First Law of Motion) .
(1) Extending indefinitely, endless. (2) Boundless, having no limits. (3) An incalculable number .
The band of frequencies from 300 Hz to 3,000 Hz .
Sounds below 15 Hz .
The current, voltage, power, or driving force applied to a circuit or device .
The end of a two-wire transmission line that is connected to a source .
Impedance presented to the transmitter by the transmission line and its load .
The amplitude at any given point along a sine wave at a specific instant in time .
INSTANTANEOUS AUTOMATIC GAIN CONTROL
A circuit that can vary the gain of the radar receiver with each input pulse to maintain a nearly constant output peak amplitude .
The magnitude at any particular instant when a value is continually varying
with respect to time .
A material used to prevent the leakage of electricity from a conductor and to provide mechanical spacing or support as protection against accidental contact with the conductor  .
The resistance offered by an insulating material to current leakage .
(1) A circuit in which many elements are fabricated and interconnected by a single process (into a single chip), as opposed to a "nonintegrated" circuit in which the transistors, diodes, resistors, and other components are fabricated separately and then assembled . (2) Elements inseparably associated and formed on or within a single substrate .
In communications any signal that conveys information (voice, teletypewriter,
INTENSITY (OF SOUND)—The measurement of the amplitude of sound energy. Generally synonymous with loudness .
The region in an electron tube where the electrons interact with an alternating
electromagnetic field .
The point where two lines drawn on a graph cross each other .
The capacitance between the electrodes of an electron tube  .
Any disturbance that produces an undesirable response or degrades a signal .
A lower frequency to which an RF echo is converted for ease of amplification .
INTERMEDIATE POWER AMPLIFIER
The amplifier between the oscillator and final power amplifier .
Direct support and technical assistance to user organizations. Tenders and shore-based repair facilities .
Small auxiliary poles, placed between main field poles, whose magnetic field opposes the armature field and cancels armature reaction. Interpoles accomplish the same thing as compensating windings .
In Boolean algebra, the law which states that if one input to an AND gate is
already TRUE, then the output will depend upon the state of the other inputs only .
Inverted or reversed in position or relationship .
To change a physical or logical state to its opposite state .
A circuit with one input and one output. Its function is to invert or reverse the input. When the input is high, the output is low, and vice versa. The inverter is sometimes called a NOT circuit, since it produces the reverse of the input .
An electrically charged atom or group of atoms. Negative ions have an excess of electrons; positive ions have a deficiency of electrons .
(1) The process of producing ions. (2) The electrically charged particles produced by high-energy radiation, such as light or ultraviolet rays, or by the collision of particles during thermal agitation  .
The potential required to ionize the gas of a gas-filled tube. Sometimes called
firing potential .
To make an atom or molecule of an element lose an electron, as by X-ray bombardment, and thus be converted into a positive ion. The free electron may attach itself to a neutral atom or molecule to form a negative ion .
The most important region of the atmosphere extending from 31 miles to 250 miles above sea level. Contains four cloud-like layers that affect radio waves .
Disturbances in the earth's magnetic field that make communications practical only at lower frequencies .
A metal plate with an opening through which electromagnetic waves may pass. Used as an impedance-matching device in waveguides .
The prevention of unwanted interaction or leakage between components .
A diagram showing the outline of a ship, aircraft, or equipment and the
location of equipment and cable runs .
The radiation of energy equally in all directions .