Glossary of Electronic Terms, Electronic terms starting from alphabet C

Cavitation:

The sudden formation and collapse of air bubbles in water due to turbulence. If air bubbles pass over the face of the transducer, the signal from the transducer is reflected back by the air bubbles. These reflections are very strong and will result in noise which will interfere with bottom, structure and fish signals, making them difficult or impossible to see.

 

Chart Speed:

The chart is the picture of the underwater world you see on the display, and the chart speed is how fast that picture moves...or scrolls...across the screen from right to left. This scroll speed is adjustable to help display better fish arches...or to suit your viewing preferences when using fish symbols.

 
Cold Start :

The process of powering up a new GPS receiver for the first time and having it search out and lock onto the satellites by itself, without the benefit of initialization data. This procedure is slower and may require several minutes for initial satellite acquisition.

CAD

Abbreviation for "computer aided design"

 

Capacitance

The ability of a capacitor to store an electrical charge. The basic unit of capacitance is the Farad.

 

Capacitor

An electronic component having capacitive reactance.

 

Carbon resistor

Resistor of fixed value made by mixing carbon granules with a binder which is moulded and then baked.

 

Cathode

The negative terminal electrode of a device. The "N" material in a junction diode.

 
Cathode ray tube

(CRT) Vacuum tube used to display data in a visual form. Picture tube of a television or computer terminal.

 

Cell

Single unit used to convert chemical energy into a DC electrical voltage.

 

Ceramic capacitor

Capacitor in which the dielectric is ceramic.

 

Charge

Quantity of electrical energy.

 

Charge current

Current that flows to charge a capacitor or battery when voltage is applied.

 

Chassis

Metal box or frame into which components are mounted.

 
Choke

Inductor used to oppose the flow of alternating current.

 

Circuit

Interconnection of components to provide an electrical path between two or more components.

   

Class A amplifier

A linear amplifier biased so the active device conducts through 360 degrees of the input waveform.

 

Class B amplifier

An amplifier with two active devices. The active components are biased so that each conducts for approximately 180 degrees of the input waveform cycle.

 

Class C amplifier

An amplifier in which the active device conducts for less than 180 degrees of the input waveform cycle.

 

Clipper

A diode circuit used to eliminate part of a waveform

 

Clipping

Distortion caused by overdriving an amplifier.

 

Clock

A square waveform used for synchronizing and timing of several circuits.

 

Closed circuit

Circuit having a complete path for current flow.

 

Coaxial cable

Transmission line in which the signal carrying conductor is covered by a dielectric and another conductor.

    

Collector

The semiconductor region in a bipolar junction transistor through which a flow of charge carriers leaves the base region.

      

Coulomb

Unit of electric charge. A negative coulomb charge consists of 6.24 × 1018 electrons.

  

Coupling

To electronically connect two circuits so that signal will pass from one to the other.

 

Covalent bond

The way some atoms complete their valence shells by sharing valence electrons with neighboring atoms.

 

CRT

Abbreviation for cathode ray tube.

 

Current

Measured in amperes, it is the flow of electrons through a conductor. Also know as electron flow.

 

Current amplifier

Amplifier to increase signal current.

 

Current divider

Parallel network designed to divide the total current of a circuit

 
Cycle

When a repeating wave rises from zero to a positive maximum then back to zero and on to a negative maximum and back to zero it is said to have completed one cycle

 
Course Over Ground (COG) :

The current direction (in degrees) that you are actually traveling. (Selectable in degrees magnetic or true north)

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