Isolating an ac supply voltage transistor /traen'zistsir)/ [1]
semiconductor component with three
electrodes (emitter, base and collector)
used for switching or amplifying an
electronic signal transistor-transistor logic /traen'zists
traen'zists ,lod3ik/ [23] family of integrated
circuits containing various combinations
of bipolar transistors transmission /traenz'mijn/ [15] signal
sent from one point to another transmission line /traenz'mijn lain/ [26,
28] Cable or duct for guiding signals
between two points transmit /tramz'mit/ [5] send a signal transmitter /traenz'mit3(r)/ [1 ] electronic
circuit for sending out signals transparent/traens'paersnt/[19] allowing
light to pass through transport mechanism /'transput
.meksnizm/ [21 ] mechanical device for
moving the magnetic tape in a recorder treble /'trebl/ [6] high frequency sounds triangular wave /trai'aengjuls weiv/ [19]
waveform with each cycle having the
shape of an equilateral triangle trigger /'тдэ(г)/ [9] short signal which
causes a process to be started trimmer /'ттэ(г)/ [11] small, preset,
Variable capacitor or resistor for making
fine adjustments in a circuit trip (a switch) /trip (э 'switf)/ v [9] cause a
switch to operate troubleshooter ЛглЫ, Ju:t3(r)/ [27]
person whose job it is to solve problems
quickly
troubleshooting chart ЛглЫ ju:tin tja:t/ [21 ] diagram to help find and solve the cause of a problem in a piece of equipment
trunk exchange Дглпк iks,tjemd3/ [28] telephone switching centre for connecting local exchanges to each other and to international exchanges
trunk telephone line Дглпк 'telifaun lain/ [26] main telephone transmission line connecting one local exchange to another
truth table /'tru:8 .teibl/ [23] table showing the output of a logic gate for all the possible combinations of its inputs
TTL /,ti: ti: 'el/ [23] transistor-transistor logic
tune Aju:n/ [5,15] adjust a circuit to oscillate at a particular frequency
tuned /tju:nd/ [10] adjusted to oscillate at a particular frequency
tuned circuit /'tju:nd ,s3:kit/ [1] electronic circuit which oscillates at a particular resonant frequency when fed by an AC signal
tuner /'у'шпэ(г)/ [ 1, 10] part of a receiver circuit consisting of an aerial and a tuned circuit (may also include a demodulator)
tunnel diode Длпэ1 'daisud/ [14] PN junction semiconductor which oscillates when suitably biased. Used as a low power microwave oscillator for radar.
turntable /'t3:n,teibl/ [13] circular revolving surface in a record player on which a vinyl record is played
TV /.ti: 'vi:/ [20] television
tweeter /'twi:ts(r)/ [13] small loudspeaker used for high frequency audio signals
twisted pair/twistid 'реэ(г)/ [26, 28] transmission line consisting of a set of two insulated copper wires twisted together to keep unwanted signal noise to a minimum
и
UHF /ju: eitj 'ef/ [10] ultra-high frequency: frequency between 300MHz and 3GHz
ultrasonic /.Altra'sonik/ [9] having a frequency which is just above the audible range (i.e. between 20kHz and 5MHz)
unenergized /,An'en3d3aizd/ [13] with no energy having been provided
