A transformer, usually used in automotive ignition systems, in which an interrupted, low-voltage direct-current inside primary is converted into an intermittent, high-voltage existing into the secondary.
a transformer that produces increased voltage alternating-current pulse from a reduced current direct current supply, specially these types of a tool within the starter engine of an automobile
See under Induction.
an apparatus creating induced currents of great power. It comes with a coil or helix of stout insulated copper line, in the middle of another coil of really good insulated cable, for which a momentary present is caused, when an ongoing (as from a voltaic battery), driving through the inner coil, is created, damaged, or varied. The internal coil has within it a core of smooth metal, and it is linked at its terminals with a condenser; -- called also inductorium, and Ruhmkorff's coil.
In electrical energy, an apparatus for making currents by induction, as well as for using all of them. It consists basically of two coils wound on a hollow cylinder, within which can be a core created of a bar of smooth iron or a bundle of smooth iron wires. One of many coils (see induction, 6), called the main coil, of comparatively coarse line, is linked to battery pack through an arrangement in making and breaking experience of it, to be able to produce temporary currents; another, the secondary coil, of extremely good line, is wound around the first, but very carefully insulated as a result, and in it is generated an ongoing by induction whenever the present begins or stops in primary coil. The currents made by the induction-coil might have an extremely large electromotive power thus great-power of overcoming weight. With a rather large induction-coil, within the building associated with secondary coil of which almost 300 miles of line were utilized, sparks over 40 ins in length have already been obtained. The induction-coil is oftentimes known as the Ruhmkorff coil, or inductorium. See transformer.
a coil for producing a high voltage from a low-voltage origin