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Gibson used four different machines to wind vintage P.A.F. pickups. Two of the four machines lacked auto stop mechanisms resulting in variation in turns for each of the bobbins that make up the P.A.F. pickup assembly. The resulting inconsistency in turn count led to variation in the output and tone.
For rewind slitting the machine used is called a slitter rewinder, a slitter or a slitting machine – these names are used interchangeably for the same machines. For particularly narrow and thin products, the pancakes become unstable, and then the rewind may be onto a bobbin-wound reel: the rewind bobbins are much wider than the slit width and ...
Yarn winding machine from 1956 used at the knitwear factory Salhus Tricotagefabrik in Bergen, Norway . Winders are used heavily in textile manufacturing, especially in preparation to weaving where the yarn is wound onto a bobbin and then used in a shuttle.
The principal power limitation on such coils is the thermal softening point of the adhesives which bond the wire to the bobbin, or the bobbin to the spider and coil. Voice coils can be used for applications other than loudspeakers, where time force linearity and long strokes are needed.
Plugged tooth coils are frequently used in a star-shaped stator design where a final ring or yoke is mounted after the assembly of the coils. Inside slotted stator laminations can also be fitted with plugged tooth coils. But in that case, fill factor losses can be registered due to the plug-in direction from the inside to the outside.
An electric current through a wire wound into a coil creates a magnetic field through the center of the coil, due to Ampere's circuital law. Coils are widely used in electronic components such as electromagnets, inductors, transformers, electric motors and generators. A coil without a magnetic core is called an "air core" coil.
Vintage wooden bobbins, cylindrical, empty of wound fiber, dimensions 16 in. high by 9 in. in diameter. Vintage wooden bobbin, unflanged, wound with yarn and attached to a "shuttle" that fits it for use in a floor loom. A bobbin or spool is a spindle or cylinder, with or without flanges, on which yarn, thread, wire, tape or film is wound. [1]
The P-90 is a single coil pickup designed by the Gibson Guitar Corporation. [4] [5] These pickups have a large, flat coil with adjustable steel screws as pole pieces, and a pair of flat alnico bar magnets lying under the coil bobbin. The adjustable pole pieces pick up the magnetism from the magnets.