TM 11-5805-246-10
GLOSSARY
Electric current (waves) that continually changes in
ALTERNATING CURRENT
amplitude and reverses polarity.
Basic unit of electrical current flow.
AMPERE
A wave of constant amplitude, frequency and phase
CARRIER
which can be modulated by changing amplitude,
frequency, or phase.
Electric current (waves) of a constant amplitude
CONTINUOUS WAVE
and frequency.
Flow of charge or rate of such flow.
CURRENT
Electric current (waves) that flows in only one
DIRECT CURRENT (dc)
direction and remains essentially constant in mag-
nitude.
Transmission and reception over teletypewriter
DUPLEX
lines are possible at the same time.
A device to open a circuit when excess current
FUSE
exists in a circuit.
Equal length pulses making up a code with spacing
MARKING PULSE
elements.
In a normal condition; neither positive (+) nor
NEUTRAL
negative (-).
Generates repetitive waveforms at a fixed or varying
frequency.
Provides dc voltage to operate tubes. Power
POWER SUPPLY CIRCUIT
transformer T6 changes 115 vac line voltage to
higher ac voltage and then is tube rectified
to dc. Also provides low voltage of 12.6 and 6.3
vac for tube filaments.
A quick change in voltage, either positive or
PULSE
negative which conveys information to a circuit.
To receive a signal or message.
RECEIVE
An outlet to which the male end of a power cord is
ECEPTACLE
inserted.
Changes ac voltage to dc.
RECTIFIER CIRCUIT
Equal length pulses making up a code with marking
SPACING PULSE
elements.
Glossary 1
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