Fundamentals of Telephony |
Contents
PREFACE | 1 |
ALTERNATINGCURRENT THEORY | 30 |
ELECTRIC NETWORKS | 57 |
Copyright | |
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Common terms and phrases
alternating ampere arranged attenuation balanced band battery bridge cable Calculate called capacitance carrier cause central characteristic circuit closed coil complete components connected considered contacts course current flow cycles decibels designed desired determined device dial diaphragm direct discussed distant drop effective electric electrons energy equal equipment exist explained field filter flow follows force frequency give given ground impedance important impressed impulses increase indicated inductance input load located loss magnetic measured method milliamperes noise Note ohms open-wire operator pair parallel party pass placed plate positive previously produced reactance receiver Referring reflected relay repeater represents resistance resistor resultant ringers ringing selector shown in Fig side signal sound waves speech Step switch telephone telephone set term terminals toll transformer transmission transmitter trunk tube units usually vector voltage volts wave wire