. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. 76 BELL SYSTEM TECHNICAL JOURNAL are used or not, always has more capacitance and inductance asso- ciated with it than a single resistance of the same value. A certain amount of compensation between the capacitance and inductance may be effected by proper design, but it may be generally accepted that the inductance of the wiring makes the phase angle of the low. Fig. 3—Resonance-type frequency meter resistance values comparatively high and the capacitance between dials
. The Bell System technical journal. Telecommunication; Electric engineering; Communication; Electronics; Science; Technology. 76 BELL SYSTEM TECHNICAL JOURNAL are used or not, always has more capacitance and inductance asso- ciated with it than a single resistance of the same value. A certain amount of compensation between the capacitance and inductance may be effected by proper design, but it may be generally accepted that the inductance of the wiring makes the phase angle of the low. Fig. 3—Resonance-type frequency meter resistance values comparatively high and the capacitance between dials and between units of each dial makes the phase angle of the high values comparatively high. This effect can only be overcome by a compact design using coils of small physical size. This sets a limitation on coils for use in dial boxes which is not present to such an extent in the case of single resistance units or single value prime standards. Methods of Measurement We have discussed already measurements of frequency and resistance in connection with the description of standards, and we will not discuss them further here. We are particularly concerned with the measure- ment of impedance of all types, it being understood that an>- resistance having a phase angle which is not negligible or which is of special interest is to be considered a special type of 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
