Common Transformer Terminology
A transformer is a device which transfers electric energy from one circuit to another. Large scale transformers are used to increase electrical voltage before its transmission over long wires. There are numerous other transformer applications such as leakage transformers, which are used for arc welding, neon lights and doorbells; audio transformers, which are used in amplifiers, mixing boards, and loudspeakers; instrument transformers, which are used to measure the output in electrical power systems. Here are some terms that might be useful in understanding the major components of transformers:
SI Base Units: The International System of Units' categories of measure. These include meters for length, kilograms for weight, second for time, Kelvin for temperature, mole for amount of substance, ampere for electrical current, and candela for luminous intensity.
Electric Current: The flow of an electrical charge through a conductor such as a wire.
Conductor: Any material containing transportable electrical charges. Copper wires are common conductors.
Electromagnetic Induction: The creation of an electric current across a conductor through a magnetic field.
Electromotive Force: The voltage which is generated by a battery.
Volt: The unit of electric potential and electromotive force equal to the difference of electric potential between two points on a conductor, which carries a constant current of one amp when the power dissipated between the points is one watt.
Watt: A unit of power equal to one joule per second, or about 1/746 horsepower.
Induction Coil: Also called a spark coil, an induction coil is a form of electrical transformer which produces high voltage pulses from a low voltage direct current supply.
Frequency: The rate at which a repeating event occurs during a particular unit of time.