Sentence Examples


  • The dark interior set off caution bells again.
  • The conditions permit of the circulation of the alternating currents of low periodicity, which are used for operating the bells, but in respect of the battery the circuit is open until the subscriber lifts the receiver, when the hook switch, thus released, joins the transmitter with one winding of an induction coil in series across the circuit.
  • 18 a bells was such that not more than two or three persons could be connected without seriously impairing the efficiency of the circuit for speech transmission.
  • An improvement was effected in this respect by the introduction of the " bridging " system, in which the bells possessing high inductance are placed in parallel between the two wires of the circuit.
  • Although the bells are constantly in circuit their high impedance prevents any appreciable interference with the telephonic currents.
 

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