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He worked as a stage manager with Jamie after graduation, then got a job at director George Lucas' special effects company, Industrial Light and Magic ( ILM). The LED light until it begins blinking orange. Monopole and dipole radio antennas are designed to act as resonators for radio waves; the power from the transmitter, applied to the antenna through the antenna's transmission line, excites standing waves of voltage and current in the antenna element. The loading coil is often placed at the base of the antenna, between it and the transmission line (base loading), but for more efficient radiation, it is sometimes inserted near the midpoint of the antenna element (center loading). With loading coils, signal attenuation of a circuit remains low for signals within the passband of the transmission line but increases rapidly for frequencies above the audio cutoff frequency. Without loading coils, the line response is dominated by the resistance and capacitance of the line with the attenuation gently increasing with frequency. A common application of loading coils is to improve the voice-frequency amplitude response characteristics of the twisted balanced pairs in a telephone cable.

With loading coils of exactly the right inductance, neither capacitance nor inductance dominate: the response is flat, waveforms are undistorted and the characteristic impedance is resistive up to the cutoff frequency. To reduce losses due to high capacitance on long-distance bulk power transmission lines, inductance can be introduced to the circuit with a flexible AC transmission system (FACTS), a static VAR compensator, or a static synchronous series compensator. When so loaded the antenna presents a pure resistance to the transmission line, preventing energy from being reflected. The mathematical condition for distortion-free transmission is known as the Heaviside condition. The concept of loading coils was discovered by Oliver Heaviside in studying the problem of slow signalling speed of the first transatlantic telegraph cable in the 1860s. He concluded additional inductance was required to prevent amplitude and time delay distortion of the transmitted signal. This way, you control the on-screen functions through the Xbox, which solves the remote control problem (which we'll address shortly).

Submarine communications cables are particularly subject to the problem, but early 20th century installations using balanced pairs were often continuously loaded with iron wire or tape rather than discretely with loading coils, which avoided the sealing problem. Using coils with parallel capacitors forms a filter with the topology of an m-derived filter and a band of frequencies above the cut-off is also passed. The shorter the distance between the coils, the higher the cut-off frequency. In many cases, for practical reasons, it is necessary to make the antenna shorter than the resonant length, this is called an electrically short antenna. Previous telegraph lines were overland or shorter and hence had less delay, and the need for extra inductance was not as great. This increases the flux linkages, without which the number of turns on the coil would need to be increased. To reduce skin effect losses, the coil is often made of tubing or Litz wire, with single layer windings, with turns spaced apart to reduce proximity effect resistance. To reduce power lost in dielectric losses, the coil is often suspended in air supported on thin ceramic strips.

To make an electrically short antenna resonant, a loading coil is inserted in series with the antenna. To be "naturally" resonant, the antenna must have a physical length of one quarter of the wavelength of the radio waves used (or a multiple of that length, with odd multiples usually preferred). A more engineer friendly rule of thumb is that the approximate requirement for spacing loading coils is ten coils per wavelength of the maximum frequency being transmitted. But HDMI is also more than just a port on the back of your TV (or a cable to connect your device to the screen). Hazlett, Thomas W. "Private Monopoly and the Public Interest: An Economic Analysis of the Cable Television Franchise." University of Pennsylvania Law Review 134, no. 6 (July 1986): 1335. doi:10.2307/3312027. Telecommunications Issues Related to Competition and Subscriber Rates in the Cable Television Industry. "Broadband Telecommunications for the 21st Century: Five Principles for Reform." The Heritage Foundation.

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