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  2. Parasitic capacitance - Wikipedia

    en.wikipedia.org/wiki/Parasitic_capacitance

    This equivalent circuit of part of a Tesla coil has stray capacitance between each winding and one to ground. Parasitic capacitance or stray capacitance is the unavoidable and usually unwanted capacitance that exists between the parts of an electronic component or circuit simply because of their proximity to each other.

  3. Induction coil - Wikipedia

    en.wikipedia.org/wiki/Induction_coil

    An induction coil consists of two coils of insulated wire wound around a common iron core (M). [1] [7] One coil, called the primary winding (P), is made from relatively few (tens or hundreds) turns of coarse wire. [7] The other coil, the secondary winding, (S) typically consists of up to a million turns of fine wire (up to 40 gauge). [8] [1] [7]

  4. Superconducting magnetic energy storage - Wikipedia

    en.wikipedia.org/wiki/Superconducting_magnetic...

    Here the energy is stored by disconnecting the coil from the larger system and then using electromagnetic induction from the magnet to induce a current in the superconducting coil. This coil then preserves the current until the coil is reconnected to the larger system, after which the coil partly or fully discharges. Refrigeration system

  5. Motor capacitor - Wikipedia

    en.wikipedia.org/wiki/Motor_capacitor

    A typical motor start capacitor. A motor capacitor [1] [2] is an electrical capacitor that alters the current to one or more windings of a single-phase alternating-current induction motor to create a rotating magnetic field. [citation needed] There are two common types of motor capacitors, start capacitor and run capacitor (including a dual run ...

  6. Galvanic isolation - Wikipedia

    en.wikipedia.org/wiki/Galvanic_isolation

    The switching contacts may be normally closed (opening when the coil is energized) or normally open (closing when the coil is energized). Relays do not transmit power like a transformer, but relatively little coil power can control a much higher power circuit, making them a kind of amplifier. They are very widely used for control applications ...

  7. Inductive coupling - Wikipedia

    en.wikipedia.org/wiki/Inductive_coupling

    The coupling between two wires can be increased by winding them into coils and placing them close together on a common axis, so the magnetic field of one coil passes through the other coil. Coupling can also be increased by a magnetic core of a ferromagnetic material like iron or ferrite in the coils, which increases the magnetic flux.

  8. Gimmick capacitor - Wikipedia

    en.wikipedia.org/wiki/Gimmick_capacitor

    A gimmick capacitor is a capacitor made by twisting two pieces of insulated wire together. The capacitance may be varied by loosening or tightening the winding. The capacitance may be varied by loosening or tightening the winding.

  9. Fan coil unit - Wikipedia

    en.wikipedia.org/wiki/Fan_coil_unit

    A fan coil unit (FCU), also known as a Vertical Fan Coil Unit (VFCU), is a device consisting of a heat exchanger (coil) and a fan. FCUs are commonly used in HVAC systems of residential, commercial, and industrial buildings that use ducted split air conditioning or central plant cooling.