標(biāo)題: Titlebook: Carrier Communication over Power Lines; Heinrich-Karl Podszeck Book 1963Latest edition Springer-Verlag Berlin Heidelberg 1963 Kommunikatio [打印本頁(yè)] 作者: 投降 時(shí)間: 2025-3-21 17:48
書(shū)目名稱(chēng)Carrier Communication over Power Lines影響因子(影響力)
書(shū)目名稱(chēng)Carrier Communication over Power Lines影響因子(影響力)學(xué)科排名
書(shū)目名稱(chēng)Carrier Communication over Power Lines網(wǎng)絡(luò)公開(kāi)度
書(shū)目名稱(chēng)Carrier Communication over Power Lines網(wǎng)絡(luò)公開(kāi)度學(xué)科排名
書(shū)目名稱(chēng)Carrier Communication over Power Lines被引頻次
書(shū)目名稱(chēng)Carrier Communication over Power Lines被引頻次學(xué)科排名
書(shū)目名稱(chēng)Carrier Communication over Power Lines年度引用
書(shū)目名稱(chēng)Carrier Communication over Power Lines年度引用學(xué)科排名
書(shū)目名稱(chēng)Carrier Communication over Power Lines讀者反饋
書(shū)目名稱(chēng)Carrier Communication over Power Lines讀者反饋學(xué)科排名
作者: 陶醉 時(shí)間: 2025-3-21 21:51 作者: 大范圍流行 時(shí)間: 2025-3-22 02:24
http://image.papertrans.cn/c/image/222178.jpg作者: –LOUS 時(shí)間: 2025-3-22 06:35
https://doi.org/10.1007/978-3-662-26561-1Kommunikation; Kommunikationsnetz; Konstruktion; Netzwerk; Schaltung作者: 愛(ài)好 時(shí)間: 2025-3-22 09:11
978-3-662-24421-0Springer-Verlag Berlin Heidelberg 1963作者: PANG 時(shí)間: 2025-3-22 13:59
https://doi.org/10.1007/3-540-33487-4supervisory control, and teleprinter systems. The oldest and most important means of communication is telephony. Beginning in 1920, various countries started to construct carrier telephone systems for operation over power lines. These initially individual connections were gradually integrated into l作者: PANG 時(shí)間: 2025-3-22 20:06
Legacykonzepte der Netzwerkredundanzes it provides the shortest connection between the communicating stations. Compared with open-wire communication lines, it has a better insulation and an appreciably higher mechanical strength. Damage caused by adverse weather conditions is therefore a very rare occurrence. Besides, a power line car作者: 逗它小傻瓜 時(shí)間: 2025-3-23 00:06
Legacykonzepte der Netzwerkredundanze most characteristic examples. Transmission was believed to be a space radiation process with wave propagation concen?trated along the power line route. “Line-bound RF transmission” or similar terms were used at that time to distinguish this mode of operation from wireless RF transmission. There is作者: stressors 時(shí)間: 2025-3-23 03:51
Legacykonzepte der Netzwerkredundanz type of traffic, a further classification is made into “telephone networks” consisting of a number of “telephone districts”, “teleprinter networks”, and “telemetering networks”. A “carrier frequeny district” includes transmitters and receivers tuned to the same frequency.作者: intercede 時(shí)間: 2025-3-23 06:41 作者: paltry 時(shí)間: 2025-3-23 10:56
https://doi.org/10.1007/3-540-33487-4 were essentially of a subjective nature. Objective measure?ments were exceptional cases. A frequency meter of the variety used in radio transmission systems was relied upon to adjust the oscillators as accurately as possible and to tune the resonant traps. The carrier output of the transmitter was 作者: STALL 時(shí)間: 2025-3-23 16:23
https://doi.org/10.1007/3-540-33487-4Supply of electrical energy to large areas through overhead transmission lines has been expanded to a point where an extensive communication network has become an indispensable aid in system management. The communication media are used for作者: Libido 時(shí)間: 2025-3-23 20:49 作者: heterogeneous 時(shí)間: 2025-3-24 01:37 作者: 呼吸 時(shí)間: 2025-3-24 05:57 作者: Generalize 時(shí)間: 2025-3-24 07:20
Characteristics of Power Line Carrier Channels,The limits of the repeatedly mentioned frequency range from 15 kc to 500 kc, which is made available for carrier communication over power lines, are determined by physical and economical conditions, partly also by administrative regulations.作者: languor 時(shí)間: 2025-3-24 11:54
Appendix,AC currents in open-wire lines are propagated at a speed equaling almost the velocity of light waves c = 300 000 km/sec. (186 000 miles/sec.) This applies both to the power current frequencies of 16 2/3 cps, 50 cps, and to the carrier frequencies of 15 kc to 500 kc as used in power line communication systems.作者: Hemodialysis 時(shí)間: 2025-3-24 18:04 作者: debris 時(shí)間: 2025-3-24 20:59 作者: Temporal-Lobe 時(shí)間: 2025-3-25 03:07
Measuring Methods and Measuring Equipment,proximate picture of signal attenuation in the carrier channel. Vacuum tube voltmeters were used to measure the HF voltages in the receivers and in by-pass circuits having no telephone stations connected to them.作者: maculated 時(shí)間: 2025-3-25 03:20
Carrier Communication Terminals,minals were designed exclusively for telephone conversation. When remote supervision and control entered the picture at some later date, the first carrier terminals built were again of the single-purpose type and their transmission band was chosen so as to fit into the allocation scheme established for the speech frequencies.作者: 積習(xí)已深 時(shí)間: 2025-3-25 08:05 作者: 易受刺激 時(shí)間: 2025-3-25 13:16
Legacykonzepte der Netzwerkredundanz an appreciably higher mechanical strength. Damage caused by adverse weather conditions is therefore a very rare occurrence. Besides, a power line carrier communication system saves the cost of constructing a separate line.作者: extract 時(shí)間: 2025-3-25 16:11 作者: saphenous-vein 時(shí)間: 2025-3-25 22:16
https://doi.org/10.1007/3-540-33487-4ne networks. In 1947 the German network included, after deduction of all war-incurred losses and prior to reconstruction after the war, some 580 carrier telephone terminals (Fig. 1). In 1960, some 1500 carrier terminals were in operation alone in Western Germany.作者: doxazosin 時(shí)間: 2025-3-26 02:31 作者: BOAST 時(shí)間: 2025-3-26 06:29 作者: NADIR 時(shí)間: 2025-3-26 09:39 作者: 神圣將軍 時(shí)間: 2025-3-26 14:29
Properties of Power Lines in the Carrier Frequency Range,e most characteristic examples. Transmission was believed to be a space radiation process with wave propagation concen?trated along the power line route. “Line-bound RF transmission” or similar terms were used at that time to distinguish this mode of operation from wireless RF transmission. There is作者: 整潔漂亮 時(shí)間: 2025-3-26 20:35 作者: 令人心醉 時(shí)間: 2025-3-26 23:21 作者: 令人發(fā)膩 時(shí)間: 2025-3-27 02:22 作者: 荒唐 時(shí)間: 2025-3-27 06:12
Legacykonzepte der Netzwerkredundanzarticular, increase rapidly at higher frequencies. The attenuation of the line is a measure of energy losses (Appendix 9.5). It is a function of loss resistance and the characteristic impedance of a line.作者: 感染 時(shí)間: 2025-3-27 09:38
Properties of Power Lines in the Carrier Frequency Range,articular, increase rapidly at higher frequencies. The attenuation of the line is a measure of energy losses (Appendix 9.5). It is a function of loss resistance and the characteristic impedance of a line.作者: anachronistic 時(shí)間: 2025-3-27 16:09
7樓作者: 多余 時(shí)間: 2025-3-27 21:12
7樓作者: Flounder 時(shí)間: 2025-3-27 23:48
8樓作者: 含糊其辭 時(shí)間: 2025-3-28 05:03
8樓作者: 抵制 時(shí)間: 2025-3-28 10:12
8樓作者: 詞匯表 時(shí)間: 2025-3-28 11:03
9樓作者: CANE 時(shí)間: 2025-3-28 17:15
9樓作者: 吝嗇性 時(shí)間: 2025-3-28 21:40
9樓作者: precede 時(shí)間: 2025-3-28 23:14
9樓作者: 排他 時(shí)間: 2025-3-29 03:51
10樓作者: Stable-Angina 時(shí)間: 2025-3-29 08:58
10樓作者: MITE 時(shí)間: 2025-3-29 12:53
10樓作者: Desert 時(shí)間: 2025-3-29 16:01
10樓
