. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. pjg 15—Three types of portable indicating devices for observing the current distribution on transmission lines. The device to the left is sensitive chiefly to the current flowing in one conductor. The device in the center responds chiefly to balanced currents and is not sensitive to unbalanced currents. The device to the right is suitable for observing the voltage amplitudes on concentric tube lines. except for closely spaced wires the device is sensitive only to the c
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. pjg 15—Three types of portable indicating devices for observing the current distribution on transmission lines. The device to the left is sensitive chiefly to the current flowing in one conductor. The device in the center responds chiefly to balanced currents and is not sensitive to unbalanced currents. The device to the right is suitable for observing the voltage amplitudes on concentric tube lines. except for closely spaced wires the device is sensitive only to the cur- rent in one side of the line. When this device is used the currents in both sides should be measured to assure that there are no large current un- balances and for the purpose of averaging out any small unbalances. The device in the center of Fig. 15 is coupled to both sides of the line and is not sensitive to currents which employ the two-line conductors. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Telephone and Telegraph Company. [Short Hills, N. J. , etc. , American Telephone and Telegraph Co. ]
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
