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Fence to Filter
Field-effect transistor to Filament
is molded, sunk, or raised, or broken up into smaller panels.
Field-effect transistor. Transistor in which input signal controls current through a junction indirectly by means of an electric field. Has high input impedance.
Field excitation. (Elee.) The magnetic effect produced in an electromagnet when current is passed through a winding, usually with an iron core.
Field frequency. (Tel.) The repetition rate of the field which, in present television systems," is 50 fields per second. .
Field magnet. The electromagnet by which the magnetic field of force is produced in a dynamo.
Field resistance. (Elee.) A resistance connected in series with field coils to limit the amount of curre"nt flowing through the field windings.
Field rheostat. (Elee.) A variable high resistance of low-current capacity inserted in the field circuit to regulate within limits the output of a generator.
Field strength. The vector sum of all forces exerted by a field on a unit mass, unit charge, unit magnet etc; at a given point within a field.
Field voltage control. (Auro. Eke;) A method of controlling the voltage
applied to the field winding of a generator, usually by a vibrating armature and resistance so that the output of the generator is definitely within certain limits.
Field winding. (Elee.) the electromagnets used in motors, generators, etc., to provide an electromagnetic field.
Fifth wheel. The horizontal flat bearing on a wagon or similar cehicle which permits a change. of position of the axle with regard to the body as in turning comers.
Figure. (Carp.) In wood, the mottled, streaked or wavy grain.
Figure-of-eight. Microphone with polar response shaped like a figure eight, making it most sensitive to front and rear and insensitive to side. See "Micr~phone, Figure 8".
Filament. A thin wire or fiber. (Plast.) In the plastic industry, a fiber of resin or of glass, which, when used in multiple, serves as unspun yarn in the production of woven glass cloth and roving.
Filament transformer to Filter
Filament transformer.A transformer used in radio to reduce the supply voltage to the proper voltage for the filaments or heater of radio tubes. File.A hard steel instrument made in various shapes and sizes, for smoothing wood or metal. To cut, trim, or finish with a file.
File card. A kind of brush fitted with short, fine wires; used for cleaning files.
File hard. (Metal.) When a metal is so hard that it cannot be filed it is said to be "file hard.:'
Files, kind of. (Metal Fin.) Many kinds of files are made for special purposes and known by the name of the purpose for which they are intended. In gene~al, however, files are named for the manner in which they are cut, as bastard, rough cut, second cut, smooth, etc.
Filigree. Delicate ornamental work, used chiefly in decorating gold and silver.
Filing. (Metalwk.) The removal of material, finishing and/or fitting by use of a file.
Fill. (Engin.) In engineering, the material used to bring a low spot up to desired grade.
Filler. (Papermkg.) Clay or other minerai matter used in paper manufacture to give weight and body to the paper and to improve the printing surface. (Plast.)As used in plastics, an inert, small-particle material such as china clay, wood flour, asbestos, etc., mixed into the compound or into the liquid resin, to extend it or to impart such physical benefits as hardness impact strength and stiffness.A composition for filling holes or pores in wood before painting or vainishing
Fillers. (Engi!,.) Spacers, used to fillin when riveting two members where a gusset plate is not used.
Filler specks. (Plast.) Visible specks of wood flour, asbestos, or other filler, which stand out in conb"asting color against a plastic binder.
Fillet. A concave curve connecting two surfaces which meet at an angle. By avoiding sharp angles, it adds to the strength and beauty of a design.
Filling. (Textile) Substance such as clay or starch used in cloth finishing to give b9dy and weight.
Filling in. (Masonry) The process of building in the center of the wall between the face and back.
Fillister. (Furn.) A plane for making grooves. (Mach.) A cylindrical head of a cap scre-.y slotted for a screw driver.
Film. (plasi.) Thin plastic sheeting.
Filter. (Elec.) A device consisting of choke coils and condensers |
