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Previous portion of "C" Definitions and Terms
COPPER LOSS (I2R LOSS). The power lost because of the resistance of the conductors. In transformers
the power lost because of current flow (I) through the resistance (R) of the windings.
CORDWOOD MODULE. A method of increasing the number of discrete components in a given space.
Resembles wood stacked for a fireplace. Note that this method of construction is no longer used, as it pre-dates the seventies.
CORE. Any material that affords a path for magnetic flux lines in a coil.
Transformer Core Manufacturers
CORONA. The discharge of electricity from a conductor with a high potential.
CORRECTIVE MAINTENANCE. Includes location and repair of equipment failures.
CORRESPONDENCE. The term given to the positions of the rotors of a synchro transmitter and a synchro receiver when both rotors are on 0 degree or displaced from 0 degree by the same angle. See synchro.
COTS. Commercial off-the-shelf equipment that can be purchased through commercial retail or wholesale distributors as is (i.e., equipment that is available as a cataloged item) or with only minor modifications that does not alter its form, fit or functional characteristics. Detailed Definition of COTS.
COULOMB. A measure of the quantity of electricity. One coulomb is equal to 6.28 x 1018 electrons.
COULOMB'S LAW. Also called the LAW OF ELECTRIC CHARGES or the LAW OF
ELECTROSTATIC ATTRACTION. Coulomb’s Law states that charged bodies attract or repel each
other with a force that is directly proportional to the product of their individual charges and inversely
proportional to the square of the distance between them.
COUNTER. A device that counts input pulses. An IC or circuit that counts clock pulses [74190, 74191 Logic Gates]. A piece of test equipment that counts incoming pulses, as in a Frequency Counter.
COUNTER EMF. The voltage generated within a coil by a moving magnetic field cutting across the coil
itself. This voltage is in opposition (counter) to the moving field that created it. Counter emf is present
in every motor, generator, transformer, or other inductance winding whenever an alternating current
flows.
COUNTERPOISE. A network of wire connected to a quarter-wave antenna at one end. The network
provides the equivalent of an additional one-fourth wavelength.
COUPLING. The process of transferring energy from one point in a circuit to another point, or from one
circuit to another.
COUPLING CAPACITOR. A capacitor used to couple signals. Also refer to the section on Capacitor Terms. Reference Capacitor Manufacturers
COUPLING DEVICE. A coupling coil that connects the transmitter to the feeder.
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