- Отрасли: Aviation
- Number of terms: 16387
- Number of blossaries: 0
- Company Profile:
Aviation Supplies & Academics, Inc. (ASA) develops and markets aviation supplies, software, and books for pilots, flight instructors, flight engineers, airline professionals, air traffic controllers, flight attendants, aviation technicians and enthusiasts. Established in 1947, ASA also provides ...
An electronic circuit that amplifies an extremely weak input signal to a value strong enough to be used in other amplifiers. Preamplifiers used in some sound systems have provisions for mixing inputs from more than one microphone and for equalizing the sounds by amplifying some frequencies more than others.
Industry:Aviation
An electronic circuit that compares two signals and produces a third signal that indicates whether the first two are the same or different.
Industry:Aviation
An electronic circuit that converts DC electricity into AC electricity.
Industry:Aviation
An electronic circuit that converts direct current into alternating current. The component values in an oscillator can be chosen to produce AC with any desired frequency and with any desired waveform.
Industry:Aviation
An electronic circuit that inverts the phase of a signal. Phase inverters change the phase of a signal by 180° to make it usable for the input of one side of a push-pull amplifier.
Industry:Aviation
An electronic circuit that measures the number of pulses of electrical energy it receives in a given interval of time.
Industry:Aviation
An electronic circuit that operates according to the fundamental laws of logic.
Industry:Aviation
An electronic circuit that produces an alternating current whose frequency is in the audio-frequency range.
Industry:Aviation
An electronic circuit used in a superheterodyne radio receiver. When two electrical signals having different frequencies are fed into a mixer, the mixer output will contain four signals: Signals having the two original frequencies, a signal whose frequency is the sum of the two original frequencies, and one whose frequency is the difference between the two original frequencies.
The output of the mixer is directed into a filter circuit which selects the difference frequency for use in subsequent stages as the intermediate frequency, or IF.
Industry:Aviation
An electronic circuit used to produce alternating current having an accurately controlled frequency. One type of frequency synthesizer uses a crystal-controlled oscillator to produce a single accurate frequency. Frequency multipliers and dividers change the crystal frequency into the required frequencies.
Industry:Aviation
