Skip to content

조회 수 0 추천 수 0 댓글 0
?

단축키

Prev이전 문서

Next다음 문서

+ - Up Down Comment Print 수정 삭제
?

단축키

Prev이전 문서

Next다음 문서

+ - Up Down Comment Print 수정 삭제

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). The capacitively loaded antennas used at low frequencies have extremely narrow bandwidths, and therefore if the frequency is changed the loading coil must be adjustable to tune the antenna to resonance with the new transmitter frequency. The radiation resistance of short antennas can be very low, as low a few ohms in the LF or VLF bands, where antennas are commonly short and inductive loading is most needed. 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. A defective transmission control module could be at blame. It is easy to set up a manufacturing unit of control cable as it falls within the small and medium enterprise category and there is a strong demand in the domestic and the international market for these products. C is the capacitance per unit length of the line. 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.



Without loading coils, the line response is dominated by the resistance and capacitance of the line with the attenuation gently increasing with frequency. Another type of loading coil is used in radio antennas. To reduce power lost in dielectric losses, the coil is often suspended in air supported on thin ceramic strips. 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. The elevated currents waste energy by heating the wire, and can even overheat the transmitter. Short of that you should read up on them and try and imagine how they can make a contribution to the entertainment of your family. In order to meet the condition, what is control cable the choices are therefore to try to increase G or L or to decrease R or C. Decreasing R requires larger conductors. This cable of Stone's would increase the line inductance due to the iron content and had the potential to meet the Heaviside condition. The Heaviside condition is that the series impedance, Z, must be proportional to the shunt admittance, Y, at all frequencies.



By applying his operational calculus to the analysis of this network he discovered (1887) what has become known as the Heaviside condition. Heaviside (1881) represented the line as a network of infinitesimally small circuit elements. Heaviside considered, but rejected, this possibility which left him with the strategy of increasing L as the way to reduce distortion. Finally, Heaviside made the proposal (1893) to use discrete inductors at intervals along the line. The cutoff effect is an artifact of using lumped inductors. Cutoff is avoided by the use of continuous loading since it arises from the lumped nature of the loading coils. If the telephone line is subsequently reused to support applications that require higher frequencies, such as in analog or digital carrier systems or digital subscriber line (DSL), loading coils must be removed or replaced. John S. Stone worked for the American Telephone & Telegraph Company (AT&T) and was the first to attempt to apply Heaviside's ideas to real telecommunications. American early and middle 20th century telephone cables had load coils at intervals of a mile (1.61 km), usually in coil cases holding many.



In a cable system, the cables (assisted by other components such as pulleys and turnbuckles and bell cranks) carry the mechanical input from the pilot in the cockpit to the control surface (elevator and rudder on the tail plane and ailerons on the wings). Intervals of a kilometer allowed European systems to carry 2 Mbit/s. Excess of financial constraints in the building once again confirms the old adage: "A miser pays twice." Well, if the roof is devoid of aniobledeneniya systems will be able to "survive" the winter and spring, with sharp jumps in daily temperatures. Although many of the newer systems have done away with the serial port completely in favor of USB connections, most modems still use the serial port, as do some printers, PDAs and digital cameras. However, the loss of AppleTalk did not reduce the desire for networking solutions that combined its ease of use with IP routing. When AppleNet was cancelled in October, Sidhu led an effort to develop a new networking system based on the AppleBus hardware.


List of Articles
번호 제목 글쓴이 날짜 조회 수
22418 Menyelami Dunia Slot Gacor: Petualangan Tidak Terlupakan Di Kubet BrittKolios63542 2025.05.25 0
22417 3 Methods About Factory Construction Experience You Want You Knew Earlier Than HalleyHaralson3 2025.05.25 0
22416 A Secrets And Techniques Mobile Poker Games MaritzaGiltner4787 2025.05.25 2
22415 Mushroom Spore Syringe With Blue Meanie Spores EliasSanborn3803 2025.05.25 1
22414 You Are Welcome. Listed Here Are Eight Noteworthy Recommendations On Aviator AlbaGaskin73972 2025.05.25 0
22413 The Fastest Way To View UMS Files With FileViewPro RKERandi8424087 2025.05.25 0
22412 Menyelami Dunia Slot Gacor: Petualangan Tidak Terlupakan Di Kubet BereniceGoodsell9546 2025.05.25 0
22411 Choosing A Mobile Casino For Slots: Tips That Go A Long Way MaryEllzey509649 2025.05.25 2
22410 You Are Welcome. Here Are 8 Noteworthy Tips About Aviator MicahSchumacher655 2025.05.25 0
22409 Menyelami Dunia Slot Gacor: Petualangan Tak Terlupakan Di Kubet PatriciaXut85563 2025.05.25 0
22408 Demo Shining Hot 100 Pragmatic Anti Lag MargaretteLytle2 2025.05.25 0
22407 Samsung Galaxy Exhilarate A $50 Smartphone TeriEddington32 2025.05.25 3
22406 Menyelami Dunia Slot Gacor: Petualangan Tak Terlupakan Di Kubet MelvaDowns35000941 2025.05.25 0
22405 Wiiware Games - New Downloadable Games Released For Nintendo Wii BlytheTew035217 2025.05.25 2
22404 Easy Strategies To Discover The Best Vape Flavors On-line ElmerCaesar8833787 2025.05.25 0
22403 You Are Welcome. Here Are 8 Noteworthy Recommendations On Aviator Lonny23K2624114359503 2025.05.25 0
22402 Bitcoin Falls As El Salvador's Cryptocurrency Gamble Stumbles AlfieClare480872267 2025.05.25 5
22401 The Rise In Popularity Of Online Gambling EarthaCady603253 2025.05.25 2
22400 Excellent Shadbase Porn Is What Our Page Offers JameGrace40868503 2025.05.25 2
22399 Pocket Fruity Mobile Casino - Games, Software, Bonuses And Promotions AngelitaDiggs36 2025.05.25 2
Board Pagination ‹ Prev 1 ... 114 115 116 117 118 119 120 121 122 123 ... 1239 Next ›
/ 1239

나눔글꼴 설치 안내


이 PC에는 나눔글꼴이 설치되어 있지 않습니다.

이 사이트를 나눔글꼴로 보기 위해서는
나눔글꼴을 설치해야 합니다.

설치 취소

Designed by sketchbooks.co.kr / sketchbook5 board skin

Sketchbook5, 스케치북5

Sketchbook5, 스케치북5

Sketchbook5, 스케치북5

Sketchbook5, 스케치북5

샌안토니오 한인연합감리교회 Korean United Methodist Church of San Antonio

Tel: 210-341-8706 / Add: 5705 Blanco Rd. San Antonio TX 78216

sketchbook5, 스케치북5

sketchbook5, 스케치북5

샌안토니오 한인 감리교회 Korean Global Methodist Church of San Antonio Tel: 210-341-8706 / Add: 5705 Blanco Rd. San Antonio TX 78216