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INTELLIGENT CONTROL OF FLEXIBLE AC TRANSMISSION
INTELLIGENT CONTROL OF FLEXIBLE AC TRANSMISSION

ultrasonic radar based
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Conference Paper - UCF EECS - University of Central Florida
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... All the hardware components introduced in section II, System Components, will now be explained in more detail. To avoid redundancy, the DC-AC inverter is also neglected in this section. A. DC Generator The CALBOX runs on the organic chemistry of the user’s body. When the user mounts and propels the ...
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... included to shut off LED #10 of the first device when LED #1 of the second device comes on. The connection for cascading in dot mode has already been described and is depicted in Figure 16. As long as the input signal voltage is below the threshold of the second driver, LED #11 is off. Pin 9 of driv ...
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... If the expressions calculated for the input voltages are substituted by the equation (19) derived in part I. [27], which describes the temporal dependence of the voltage at the end of the cable line, thus we can obtain the relations (7) till (9). The condition is that only the imaginary part of the ...
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... not vary much. If either, or both, may change substantially, then the resistor must be chosen to accommodate this variance, often forcing the circuit to dissipate significantly more power than required for the nominal case. It can be considered to function like a class A amplifier, in that sense. Ad ...
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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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