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Railroad signal power supply transformer (CP-SLOPE interlocking) in west of Altoona with a warning label indicating that it contains PCBs.. Distribution transformers are normally located at a service drop, where wires run from a utility pole or underground power lines to a customer's premises.
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.
Edmund Gustav Albrecht Husserl (/ ˈ h ʊ s ɜːr l / HUUSS-url, [14] US also / ˈ h ʊ s ər əl / HUUSS-ər-əl; [15] German: [ˈɛtmʊnt ˈhʊsɐl]; [16] 8 April 1859 – 27 April 1938 [17]) was an Austrian-German philosopher and mathematician who established the school of phenomenology.
Transformer oil, a type of insulating and cooling oil used in transformers and other electrical equipment, needs to be tested periodically to ensure that it is still fit for purpose.
Motor drive unit of a on-load tap-changer. A tap changer is a mechanism in transformers that allows for variable turn ratios to be selected in distinct steps. This is done by connecting to a number of access points, known as taps along either the primary or secondary windings.
Time-domain reflectometer for cable fault detection. A time-domain reflectometer (TDR) is an electronic instrument used to determine the characteristics of electrical lines by observing reflected pulses.
A geometrical interpretation of the Abel transform in two dimensions. An observer (I) looks along a line parallel to the x axis a distance y above the origin. What the observer sees is the projection (i.e. the integral) of the circularly symmetric function f(r) along the line of sight.
Cincinnati Customs House c. 1850–60 Governments were one of the earliest users of weights and measures – often for the purpose of tax collection. In the United States the US Treasury rather than Congress took the lead in establishing a standard system of weights and measures.