Electronic Engineering Glossary Terms

"A" "B" "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M",
"N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z"

Terms 'E' to 'Ed'

EARTH GROUND. The connection to earth. The graphic show how to connect a circuit from board [PCB] ground to chassis ground. In many cases chassis ground will also connect to earth ground.

ECHO. The reflection of the original sound wave as it bounces off a distant surface. The RF signal reflected back from a radar target.

ECHO BOX. A resonant cavity device that is used to check the overall performance of a radar system. It receives a portion of the transmitted pulse and retransmits it back to the receiver as a slowly decaying transient.

ECLIPSE. A condition in which the satellite is not in view or in direct line of sight with the sun. This happens when the earth is between them.

EDDY CURRENT. Induced circulating currents in a conducting material that are caused by a varying magnetic field.

EDDY CURRENT LOSS. Losses caused by random current flowing in the core of a transformer. Power is lost in the form of heat.

EDISON EFFECT. Also called RICHARDSON EFFECT. The phenomenon wherein electrons emitted from a heated element within a vacuum tube will flow to a second element that is connected to a positive potential.

Next set of "E" Terms