Transactions of the American Institute of Electrical EngineersAmerican Institute of Electrical Engineers., 1909 "Index of current electrical literature" Dec. 1887-1890 appended tov. 5-7. |
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Seite 1
... lamps operated by direct - current dynamos , by alterna- ting - current transformers , by reactive devices in alternating- current circuits , or by rectified alternating currents from trans- Much that will be touched upon is already ...
... lamps operated by direct - current dynamos , by alterna- ting - current transformers , by reactive devices in alternating- current circuits , or by rectified alternating currents from trans- Much that will be touched upon is already ...
Seite 2
... lamp circuit , whether in series , in parallel , or in a combination of the two . In early continuous current plants of small ... lamps might become a load tending to instability , as in the case of 2 [ Jan. 8 THOMSON : LIGHTING CIRCUITS.
... lamp circuit , whether in series , in parallel , or in a combination of the two . In early continuous current plants of small ... lamps might become a load tending to instability , as in the case of 2 [ Jan. 8 THOMSON : LIGHTING CIRCUITS.
Seite 3
... lamps . The Nernst lamp glower is like the arc in being an unstable load . An arc started between electrodes held at a fixed dis- tance apart and maintained at a constant potential difference would exemplify the most unstable condition ...
... lamps . The Nernst lamp glower is like the arc in being an unstable load . An arc started between electrodes held at a fixed dis- tance apart and maintained at a constant potential difference would exemplify the most unstable condition ...
Seite 4
... lamps in series , the arc pres- sure being about 45 to 50 volts per lamp . The carbon - filament incandescent lamp was not brought out until about the begin- ning of 1880. It is well known that the original dynamos in service for arc ...
... lamps in series , the arc pres- sure being about 45 to 50 volts per lamp . The carbon - filament incandescent lamp was not brought out until about the begin- ning of 1880. It is well known that the original dynamos in service for arc ...
Seite 5
... lamps used with these machines possessed the feature of automatically lengthening and shortening the arc following the current changes in the arc - separating lamp magnets , this tending to regulate and keep constant the current ...
... lamps used with these machines possessed the feature of automatically lengthening and shortening the arc following the current changes in the arc - separating lamp magnets , this tending to regulate and keep constant the current ...
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Häufige Begriffe und Wortgruppen
abwatts abwatts per cm alternating alternating current alternating-current amperes apparatus approximately armature brushes capacity Carnot cycle circuit coal coils commutator condenser connected constant copper copper loss core loss cost curve cycles cylinder degrees cent diagram diameter direct current direct-current effect efficiency electromotive force energy equation field flux density form-factor frequency give heat high-tension hysteresis increase induction motor industrial installed insulation invention inventor iron lamps leakage linear load machine manufacturing maximum mechanical method mill obtained operation outdoor output paper patent system phase plant potential power-factor practical pressure reactance regulation repulsion motor resistance rotor secondary short-circuit shown in Fig shows shunt single-phase station stator steam steel Steinmetz switches synchronous speed temperature terminal thermodynamic efficiency three-phase tion torque transformer transmission line unbalance unbalancing voltage voltmeter volts water-power wattmeter winding wire Y Y axis
Beliebte Passagen
Seite 343 - As to the suggestion that competitors were excluded from the use of the new patent, we answer that such exclusion may be said to have been of the very essence of the right conferred by the patent, as it is the privilege of any owner of property to use or not to use it, without question of motive.
Seite 566 - The torque of an induction motor varies as the square of the applied voltage and of a synchronous reluctance motor as approximately the 2 1/2 power of the voltage.
Seite 318 - ... made of the sole working or making of any manner of new manufactures within this realm, to the true and first inventor and inventors of such manufactures, which others at the time of making such letters patent and grants shall not use, so as also they be not contrary to the law, nor mischievous to the State by raising of prices of commodities at home, or hurt of trade, or generally inconvenient...
Seite 317 - I will show you how the judges have heretofore allowed uf monopoly patents — which is that when any man by his own energy and industry or by his own charge and industry, or by his own wit or invention doth bring any new trade into the realm, or any engine tending to the furtherance of a trade . . . that never was used before, and that for the good of the realm...
Seite 175 - concurrent development of the streams and their sources for every useful purpose to which they may be put," as it is stated in the "declaration of principles" of the recent North American Conservation Conference, all engineers will agree that each stream should be studied with reference to its possibilities "for domestic and municipal supply, irrigation, navigation, and power, as interrelated public uses." But the development of a plan economically sound calls for unbiased consideration and fairly...
Seite 343 - And another fact may be mentioned. In some foreign countries the right granted to an inventor is affected by non-use. This policy, we must assume, Congress has not been ignorant of nor of its effects. It has, nevertheless, selected another policy; it has continued that policy through many years. We may assume that experience has demonstrated its wisdom and beneficial effect upon the arts and sciences. From the character of the right of the patentee we may judge of his remedies.
Seite 166 - Putnam, of New York, and the results set forth in an interesting paper on " Conservation of Power Resources,"* presented by him at the conference on the Conservation of Natural Resources, held at the White House, May 13-15, 1908.
Seite 173 - The paramount use should be that of water supply; next should follow navigation in humid regions and irrigation in arid regions. The development of power on the navigable and source streams should be kept subordinate to the primary and secondary uses of the waters; though other things equal, the development of power should be encouraged, not only to reduce the drain on other resources, but because properly designed reservoirs and power plants retard the run-off and so aid in the control of the streams...
Seite 319 - to promote the progress of science and the useful arts, by securing for limited times, to authors and inventors, the exclusive right to their respective writings and discoveries...
Seite 88 - Explain why the specific heat of a gas at constant pressure is greater than the specific heat at constant volume.