Electronic Engineering 99
WORD STUDY
3. Translate the following definitions and memorize the terms:
amplifier (n) - | an electronic device increasing the strength of the signal fed into it; | |||
amplitude modulation (n) - | a method of transmitting information using radio waves, the relevant | |||
signal being superimposed onto a radio-frequency carrier wave. The | ||||
frequency of the carrier wave remains unchanged but its amplitude is | ||||
varied in accordance with the amplitude of the input signal; | ||||
conductor (n) - | a substance, body, or system that conducts electricity, heat, etc.; | |||
current (n) | - | a flow of electric charge through a conductor; | ||
diode (n) - | a semiconductor device containing one p-n junction, used in circuits for | |||
converting alternating current to direct current; | ||||
frequency modulation (n) - | a method of transmitting information using a radio-frequency carrier | |||
wave. The frequency of the carrier wave is varied in accordance with the | ||||
amplitude and polarity of the input signal, the amplitude of the carrier | ||||
remaining unchanged; | ||||
input (n) | - | the signal or current fed into a component or circuit; | ||
integrate (v) | - | to make or be made into a whole, incorporate or be incorporated; | ||
microchip (n) | - | a small piece of semiconductor material carrying many integrated | ||
circuits; | ||||
modulation (n) | - | the act or process of superimposing the amplitude, frequency, phase, | ||
etc., of a wave or signal onto another (carrier) wave or signal or onto an | ||||
electron beam; | ||||
relay (n) | - | a combination of a receiver and transmitter designed to receive radio | ||
signals and retransmit them, in order to extend their range; | ||||
semiconductor (n) - | a substance having an electrical conductivity that increases with | |||
temperature and is intermediate between that of a metal and an | ||||
insulator; | ||||
sequence (n) - | a successive order of two or more things: chronological sequence; an | |||
action or event that follows another or others; | ||||
transistor (n) | - | a semiconductor device, having three or more terminals attached to | ||
electrode regions, in which current flowing between two electrodes is | ||||
|
|
controlled by a voltage or current applied to one or more specified electrodes.