"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"
FACTOR. Any of the elements, quantities, or symbols that, when multiplied together, form a product.
FADING. Variations in signal strength by atmospheric conditions.
FAILSAFE. Built-in safety characteristics of a unit or system so that unit or system failure or a loss of
control power will not result in an unsafe condition.
FANOUT. The number of IC gates an Integrated circuit can drive is determined by the current it can source and sink. Expanded FanOut definition
FARAD. The basic unit of capacitance. A capacitor has a capacitance of 1 farad when a voltage potential of 1 volt across it produces a charge of 1 coulomb.
FARADAY ROTATION. The rotation of the plane of polarization of electromagnetic energy when it
passes a substance influenced by a magnetic field that has a component in the direction of propagation.
FARADAY SHIELD. A common conductor connection at one end to provide electrostatic shielding without effecting electromagnetic waves. The common point connection is normally grounded. An example Graphic of Faraday Shielding
FAST BUS. IEEE Std 960-1993, FastBus Defined the Mechanical, Electrical, and Protocol for a board-to-backplane interface. This interface is obsolete.
FAST-TIME-CONSTANT CIRCUIT. Differentiator circuit in the first video amplifier that allows only
the leading edges of target returns, no matter how small or large, to be used.
FDDI. Fiber Distributed Data Interface is a Local Area Network [LAN] using Fiber-Optic cable in a Dual Token Ring topology.
FDDI is defined in ISO 9314-1/2/3.
FEEDBACK. The return of a portion of the output of a circuit to its input.
FEEDER. A transmission line that carries energy to the antenna. Antenna Dictionary
FEEDHORN. A horn radiator used to feed a reflector.
FEP. Fluorinated Ethylene Propylene, A synthetic type of insulation.
FERRITE. A powdered and compressed ferric oxide material that has both magnetic properties and light
resistance to current flow.
FERRITE SWITCH. A ferrite device that blocks the flow of energy through a waveguide by rotating the
electric field 90 degrees. The rotated energy is then reflected or absorbed.
FERROMAGNETIC MATERIAL. A highly magnetic material, such as iron, cobalt, nickel, or their
alloys.
FERRULES. The cylindrical metallic ends of a cartridge fuse.
FIBER OPTICS. Conductors or optical waveguides that readily pass light. Fiber Optic Connector Manufacturers
FIBROUS BRAID. An outer covering used to protect a conductor’s insulating material. Commonly made
from cotton, linen, silk, rayon, or fiberglass.
FIDELITY. The faithful reproduction of a signal. The accuracy with which a system reproduces a
signal at its output that faithfully maintains the essential characteristics of the input signal.
Next set of "F" Terms
