The word "induction coil" is spelled as /ɪnˈdʌkʃən kɔɪl/. In this word, the first part "induction" is pronounced with the stress on the second syllable and is spelled with "i-n-d-u-c-t-i-o-n". The second part "coil" is pronounced with the stress on the first syllable and is spelled with "c-o-i-l". Together, the word refers to a type of electrical transformer that uses a magnetic field to convert voltage. The word has its origins in the late 19th century and is often used in electrical engineering.
An induction coil refers to a device comprising a cylindrical or toroidal coil of insulated wire that is used to induce a high voltage or current in a circuit. It consists of two separate windings: a primary winding and a secondary winding. The primary winding, which typically consists of a few turns of thick wire, is connected to a source of alternating current (AC). On the other hand, the secondary winding, which usually contains a large number of turns of fine wire, is connected to the load or device that requires a high voltage or current.
The underlying principle behind the induction coil's operation lies in electromagnetic induction. When an alternating current flows through the primary winding, it creates a time-varying magnetic field around it. This varying magnetic field, in turn, induces a high voltage or current in the secondary winding, which can be significantly greater or lower than the input voltage or current, depending on the number of turns in each winding.
Induction coils have various applications, such as in electrical transformers, ignition systems, and medical devices. They are widely used to step up or step down voltage, create high voltages for scientific experiments, generate high-frequency currents for welding, and produce sparks in spark gap radios or spark ignition systems. Overall, the induction coil plays a vital role in electrical engineering and has revolutionized various technological advancements.
An apparatus for the induction of a secondary electrical current; it consists of a coil of comparatively few turns of copper wire, outside of which is (insulated from it) a coil of many turns of a very fine wire; through the inner coil is passed an interrupted current and every time the current opens or closes an induction current is generated in the outer coil.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "induction" has its roots in the Latin word "inductio", which means "leading in", "bringing in", or "introduction". It comes from the verb "inducere", meaning "to lead in" or "to introduce".
The term "coil" is derived from the Old French word "coillir", meaning "to gather" or "to wind". It can be traced back to the Latin word "colligere", which means "to collect" or "to gather".
Therefore, the word "induction coil" combines the concept of leading or introducing with the idea of winding or gathering, referring to a device used to induce or generate electrical currents by winding wires in a particular way.