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2. Coil winding technology - Wikipedia

   en.wikipedia.org/wiki/Coil_winding_technology

   In electrical engineering, coil winding is the manufacture of electromagnetic coils.Coils are used as components of circuits, and to provide the magnetic field of motors, transformers, and generators, and in the manufacture of loudspeakers and microphones.

3. Winding machine - Wikipedia

   en.wikipedia.org/wiki/Winding_machine

   Winding machines are classified based on the materials they are winding, [2] [3] some major types are Coil winding machine; Film winding machine; Rope winding machine [4] Paper winding machine; Foil winding machine; Roll slitting machines; spool winding machine; cop winding machine; On the basis of working the winders are classified as follows ...

4. Armature (electrical) - Wikipedia

   en.wikipedia.org/wiki/Armature_(electrical)

   In a "lap" winding, there are as many current paths between the brush (or line) connections as there are poles in the field winding. In a "wave" winding, there are only two paths, and there are as many coils in series as half the number of poles. So, for a given rating of machine, a wave winding is more suitable for large currents and low voltages.

5. Electromagnetic coil - Wikipedia

   en.wikipedia.org/wiki/Electromagnetic_coil

   A coil with a core which is a straight bar or other non-loop shape is called an open-core coil. This has lower magnetic field and inductance than a closed core, but is often used to prevent magnetic saturation of the core. A coil without a ferromagnetic core is called an air-core coil. [14]

6. Shaded-pole motor - Wikipedia

   en.wikipedia.org/wiki/Shaded-pole_motor

   A shaded-pole motor is a motor, in which the auxiliary winding is composed of a copper ring or bar surrounding a portion of each pole to produce a weakly rotating magnetic field. [2] When single phase AC supply is applied to the stator winding, due to shading provided to the poles, a rotating magnetic field is generated.

7. Field coil - Wikipedia

   en.wikipedia.org/wiki/Field_coil

   A field coil is an electromagnet used to generate a magnetic field in an electro-magnetic machine, typically a rotating electrical machine such as a motor or generator. It consists of a coil of wire through which the field current flows. In a rotating machine, the field coils are wound on an iron magnetic core which

8. Excitation (magnetic) - Wikipedia

   en.wikipedia.org/wiki/Excitation_(magnetic)

   a shunt, the simplest design, uses the main winding for the excitation power; an excitation boost system (EBS) is a shunt design with a separate small generator added to temporarily provide an energy boost when the main coil voltage drops (for example, due to a fault). The boost generator is not rated for permanent operation;

9. Growler (electrical device) - Wikipedia

   en.wikipedia.org/wiki/Growler_(electrical_device)

   A hacksaw blade is commonly used as a feeler. The alternating magnetic field induced by a shorted armature is strong at the surface of the armature, and when the feeler is lightly touched to the iron core of an armature winding, small currents are induced in the feeler that generate a third alternating magnetic field surrounding the feeler.