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NRD1-6_Rev.0110 - pes-psrc
NRD1-6_Rev.0110 - pes-psrc

... Audio-tone. See: voice frequency (1) data transmission. [5057] Automatic synchronizing system. A relaying scheme with one or more elements that: 1) takes into account the closing time of the controlled breaker to calculate when the advance angle is proper to initiate closing, 2) causes the breaker c ...
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... 3. Mount the SMP first to the backbox. Next slide the Beauty Plate over the SMP until the 2 snaps of the Beauty Plate engage with the SMP. 4. The Beauty Plate can be removed from the strobe assembly once engaged. First, gently insert a screwdriver into one of the slots located on the top and bottom ...
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... The voltage that we found for the sacrificial anode was -0.063V. Therefore, iron will not act as a good sacrificial anode for iron, but if a material had a galvanic potential less than the opposite of that voltage, it would successfully protect the object from corroding. When we placed iron in the g ...
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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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