Continuing the circuit through the winding itself- April 29, 2008 Continuing the circuit through the winding itself, it passes to the center pin projecting from the left-hand end of the armature shaft; thence to the spring _4_ which rests against this pin; and thence to the terminal wire _3_. Normally, this path is shunted by what is practically a short circuit, which may be traced ...http://communitybuilder.info/continuing-the-circuit-through-the-winding-itself/ Manufacturing Company of Buffalo New York- April 27, 2008 Manufacturing Company, of Buffalo, New York. The circuits of such sets do not differ materially from those of the ordinary desk telephone set. Illustration: Fig. 160. Kellogg Common-Battery Desk Set Illustration: Fig. 161. Dean Common-Battery Set Circuits of Common-Battery Telephone Sets. The complete circuits of the Kellogg desk-stand arrangement are shown in Fig. 160, the ...http://communitybuilder.info/manufacturing-company-of-buffalo-new-york/ In 1893- April 24, 2008 In 1893, Oliver Heaviside proposed that the inductance of telephone lines be increased above the amount natural for the inter-axial spacing, with a view to counteracting the hurtful effects of the capacity. His meaning was that the increased inductance&8211;a harmful quality in a circuit not having also a harmfully great capacity&8211;would act oppositely to the ...http://communitybuilder.info/in-1893/ CHAPTER II ELECTRICAL REPRODUCTION OF SPEECH- April 22, 2008 CHAPTER II ELECTRICAL REPRODUCTION OF SPEECH The art of telephony in its present form has for its problem so to relate two diaphragms and an electrical system that one diaphragm will respond to all the fundamental and harmonic vibrations beating upon it and cause the other to vibrate in exact consonance, producing just such vibrations, ...http://communitybuilder.info/chapter-ii-electrical-reproduction-of-speech/ No definite limit may be set to apply to all conditions- April 19, 2008 No definite limit may be set to apply to all conditions but it may be safely stated that under ordinary circumstances no more than ten stations should be placed on a non-selective line. Twenty stations are, however, common, and sometimes forty and even fifty have been connected to a single line. In such cases the ...http://communitybuilder.info/no-definite-limit-may-be-set-to-apply-to-all-conditions/ In general it may be said that the packing difficulty- April 17, 2008 In general it may be said that the packing difficulty has been almost entirely eliminated, not by the employment of remedial devices, such as those often proposed for stirring up the carbon, but by preventing the trouble by the design and manufacture of the instruments in such forms that they will not be subject to ...http://communitybuilder.info/in-general-it-may-be-said-that-the-packing-difficulty/ Local currents- April 14, 2008 Local currents, therefore, are generated, circulating between the two adjacent metals, and, as a result, the zinc plate and the electrolyte are needlessly wasted and the general condition of the cell is impaired. This is called _local action_. _Amalgamated Zincs._ Local action might be prevented by the use of chemically pure zinc, but this, on ...http://communitybuilder.info/local-currents/ Swedish or Norway iron wire about- April 11, 2008 Swedish or Norway iron wire about .02 of an inch in diameter. The diameter and the length of the coil, and the relation between the number of turns in the primary and in the secondary, and the mechanical construction of the coil, are all matters which are subject to very wide variation in practice. While ...http://communitybuilder.info/swedish-or-norway-iron-wire-about/ |