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Measurement of ionisation energy of mercury atoms
Measurement of ionisation energy of mercury atoms

PLASMA TREATMENT OF LEVIGATED MATERIALS AND
PLASMA TREATMENT OF LEVIGATED MATERIALS AND

... current impulses of about thousands of A. For this switch there has been developed a rotating spark-gap structure. The rotating electrode is coupled at high voltage. This electrode is rotating in front of the mass coupled electrodes. There are 4 types of this electrode, mounted on a insulating ring, ...
Medium Voltage Controllable Fuse
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... •• The Mersen MVCF System’s Interface Module (CFIM) is mounted in the Low Voltage area and accepts a trip signal from the customer’s existing Arc-Flash detection relay. •• The CFIM immediately sends a signal over fiber-optic cables to the Actuator Modules (CFAM) attached to the bottoms of the fuses ...
Inductive Load Arc Suppression
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Final Report - Edge - Rochester Institute of Technology

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Rectifier



A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. The process is known as rectification. Physically, rectifiers take a number of forms, including vacuum tube diodes, mercury-arc valves, copper and selenium oxide rectifiers, semiconductor diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even synchronous electromechanical switches and motors have been used. Early radio receivers, called crystal radios, used a ""cat's whisker"" of fine wire pressing on a crystal of galena (lead sulfide) to serve as a point-contact rectifier or ""crystal detector"".Rectifiers have many uses, but are often found serving as components of DC power supplies and high-voltage direct current power transmission systems. Rectification may serve in roles other than to generate direct current for use as a source of power. As noted, detectors of radio signals serve as rectifiers. In gas heating systems flame rectification is used to detect presence of a flame.Because of the alternating nature of the input AC sine wave, the process of rectification alone produces a DC current that, though unidirectional, consists of pulses of current. Many applications of rectifiers, such as power supplies for radio, television and computer equipment, require a steady constant DC current (as would be produced by a battery). In these applications the output of the rectifier is smoothed by an electronic filter (usually a capacitor) to produce a steady current.More complex circuitry that performs the opposite function, converting DC to AC, is called an inverter.
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