"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"
'E' to 'Ed', 'Ee' to 'Ele', 'Ele' to 'Ele',
'Ele' to 'Er', 'Es' to 'Ew', 'Ex' to 'Ez'
EARPHONE. A receiver placed near the ear. A transducer.
EARTH GROUND. The connection to earth. Ground. The most common connection to earth is via a water pipe. The graphic shows how to connect a Printed Circuit 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. Radar definitions are located in their own section; Radar Terms.
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.
ECL. Emitter Coupled Logic, a type of digital logic using transistors that do not go into saturation, allowing the devices to operate faster. For more detail on switching speed, ECL circuit diagram and logic family comparisons see ECL IC Manufacturers.
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.
E-CORE. E-Cores expose the winding to so so heat does not get trapped inside and also makes it easier to bring out connections from several windings. See E-Transformer.
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.
| EDGE TRIGGERED FLIP FLOP. A type of Flip Flop [FF] that requires either a rising edge or falling edge of a clock edge to force the output to change to the level of the input signal [D]. |
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EDISON CAP. Also called an Edison Base. A type of screw cap used with light bulbs. Also refer to Solid-state lighting for more detail and a graphic.
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.
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Next portion of "E" Terms and definitions
