Search results
Results From The WOW.Com Content Network
In electrical engineering, a transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits.A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force (EMF) across any other coils wound around the same core.
Isolation transformers with electrostatic shields are used for power supplies for sensitive equipment such as computers, medical devices, or laboratory instruments. Some specifications require that Isolation transformers be a part of the lightning protection on the AC circuits. [2]
In a transformer, that portion of the current used to support magnetic flux. magnetostatics The study of stationary magnetic fields. magnetostriction A property of some materials that change shape when subject to a magnetic field. magnifying transmitter A concept for a signal transmitter that used a resonant transformer to provide a high voltage.
Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used without affecting the primary circuitry. [ 14 ] Terminal identifications (either alphanumeric such as H 1 , X 1 , Y 1 , etc. or a colored spot or dot impressed in the case) indicate one end of each winding, indicating the same ...
A simple interactive tutorial on electromagnetic induction (click and drag magnet back and forth) National High Magnetic Field Laboratory; Roberto Vega. Induction: Faraday's law and Lenz's law – Highly animated lecture, with sound effects, Electricity and Magnetism course page; Notes from Physics and Astronomy HyperPhysics at Georgia State ...
A special form of auto transformer called a zig zag is used to provide grounding on three-phase systems that otherwise have no connection to ground. A zig-zag transformer provides a path for current that is common to all three phases (so-called zero sequence current).
Cutaway view of an LVDT. Current is driven through the primary coil at A, causing an induction current to be generated through the secondary coils at B.. The linear variable differential transformer (LVDT) – also called linear variable displacement transformer, [1] linear variable displacement transducer, [2] or simply differential transformer [3] – is a type of electrical transformer [4 ...
The primary winding of the transformer is connected to the high voltage or high current circuit, and the meter or relay is connected to the secondary circuit. Instrument transformers may also be used as an isolation transformer so that secondary quantities may be used in phase shifting without affecting other primary connected devices. [1]