. The practical telephone handbook and guide to the telephonic exchange . Fig. 123 Fig. 126 shows the connections of the simplest form of , from which it will be seen that when the receiveris on its rest the loop is connected to the ringer, but with acondenser interposed, so that the circuit is really incompleteso far as a direct current is concerned. Although the circuit Ii8 PRACTICAL TELEPHONE HANDBOOK is thus incomplete, a polarised ringer can be operated throughthe condenser, the energy of an alternating current beingtransferred through the insulating sheets of the condenser.
. The practical telephone handbook and guide to the telephonic exchange . Fig. 123 Fig. 126 shows the connections of the simplest form of , from which it will be seen that when the receiveris on its rest the loop is connected to the ringer, but with acondenser interposed, so that the circuit is really incompleteso far as a direct current is concerned. Although the circuit Ii8 PRACTICAL TELEPHONE HANDBOOK is thus incomplete, a polarised ringer can be operated throughthe condenser, the energy of an alternating current beingtransferred through the insulating sheets of the Fig. 124 It is necessary that the latter be of a fairly high capacity,one of 2 to 25 microfarads being generally employed. t»an Skitter
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttelephone, bookyear19
