COLLINEAR ARRAYAn array with all the elements in a straight line. Maximum radiation is
perpendicular to the axis of the elements .
COMBINATION ARRAYAn array system that uses the characteristics of more than one array .
COMBINATION CIRCUITA series-parallel circuit .
COMBINATION PEAKINGA technique in which a combination of peaking coils in series and parallel
(shunt) with the output signal path is used to improve high-frequency response .
COMMON BASEA transistor circuit in which the base electrode is the common element to both input
and output circuits .
COMMON-BASE DETECTORAn amplifying detector in which detection occurs in the emitter-base
junction and amplification occurs at the output of the collector junction .
COMMON COLLECTORA transistor circuit configuration in which the collector is the element
common to both the input and the output circuits .
COMMON EMITTERA circuit configuration in which the emitter is the element common to both the
input and the output circuits .
COMMON-EMITTER DETECTOROften used in receivers to supply detected and amplified output.
The emitter-base junction acts as the detector .
COMMON IDENTITIES LAWIn Boolean algebra this law states that anytime the expression A(A + B)
= AB or A + AB = A + B appears, it can immediately be simplified to AB without going through the
process of using the distributive law, complementary law, or the law of union to simplify .
COMMUTATIONThe act of a commutator in converting generator output from an ac voltage to a dc
COMMUTATIVE LAWIn Boolean algebra this law states that changing the order of the terms in an
equation will not affect the value of the equation. Example: A + B = B + A; A
B = B
COMMUTATORA mechanical device that reverses armature connections in motors and generators at
the proper instant so that current continues to flow in only one direction. In effect, the commutator
changes ac to dc .
COMPARATORAn equipment that compares incoming signals and selects the strongest to be fed to a
teletypewriter through a patch panel. This is used in diversity operation .
COMPENSATING WINDINGSWindings embedded in slots in pole pieces, connected in series with the
armature, whose magnetic field opposes the armature field and cancels armature reaction .
COMPENSATIONThe process of overcoming the problems associated with high frequencies in an
COMPLEMENTA number or state that is the opposite of a specified number or state. The negative of a
number is often represented by its complement .
COMPLEMENTARY (SECONDARY) COLORS OF LIGHTThe colors of light produced when two
of the primaries are mixed in overlapping beams of light. The complementary colors of light are
magenta, yellow, and cyan .