APAKAH MAKSUD AUTOMATIC FREQUENCY CONTROL dalam CORSICA?
Kawalan frekuensi automatik
Dalam peralatan radio, Kawalan Frekuensi Automatik, juga dikenali sebagai Penalaan Halus Automatik, adalah kaedah atau litar untuk memastikan litar resonant secara automatik ditala kepada kekerapan isyarat radio masuk. Ia digunakan terutamanya dalam penerima radio untuk memastikan penerima disetel kepada frekuensi stesen yang dikehendaki. Dalam komunikasi radio, AFC diperlukan kerana, selepas frekuensi bandpass penerima disesuaikan dengan kekerapan pemancar, kedua frekuensi mungkin akan terputus, mengganggu penerimaan. Ini boleh disebabkan oleh frekuensi pemancar yang kurang terkawal, tetapi penyebab yang paling biasa adalah melayang frekuensi jalur tengah penerima, disebabkan oleh aliran haba atau mekanikal dalam nilai-nilai komponen elektronik. Dengan mengandaikan bahawa penerima hampir disesuaikan dengan kekerapan yang dikehendaki, litar AFC dalam penerima akan menghasilkan voltan ralat berkadar dengan tahap yang mana penerima menerima mistun. Voltan ralat ini kemudian diberi makan kembali ke litar penalaan sedemikian rupa sehingga kesilapan penalaan dikurangkan. Dalam kebanyakan pengesan modulasi kekerapan, voltan ralat jenis ini mudah didapati. Lihat maklum balas negatif.
Definisi automatic frequency control dalam kamus Corsica
Takrif kawalan kekerapan automatik dalam kamus adalah sistem dalam penerima radio atau televisyen di mana penalaan isyarat masuk AFC dikekalkan dengan tepat.
CORSICA BUKU YANG BERKAIT DENGAN «AUTOMATIC FREQUENCY CONTROL»
Ketahui penggunaan
automatic frequency control dalam pilihan bibliografi berikut. Buku yang berkait dengan
automatic frequency control dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
1
CONTROL ENGINEERING: THEORY AND PRACTICE
Automatic frequency control in the radio communication system is also another
example of a closed-loop control system. Figure 1.5 shows a schematic diagram
of a superheterodyne receiver with the automatic frequency control system. Here
...
M. N. BANDYOPADHYAY,
2002
2
Modern Dictionary of Electronics
Similar to automatic frequency control. automatic focusing — A method of
electrostatically focusing a television picture tube; the focusing anode is internally
connected through a resistor to the cathode and thus requires no external
focusing ...
3
Newnes Dictionary of Electronics
This is necessary to ensure correct colour rendering in spite of variations in
signal level at the receiver input. automatic contrast control See automatic gain
control. automatic frequency control (AFC) A circuit in a receiver which ensures
that ...
S W Amos, Roger Amos,
2002
4
Microtron: Development and Applications
Dependence of the average current of accelerated electrons on the magnitude of
the magnetron anode current: a — with automatic frequency control, fc — without
automatic frequency control. The automatic frequency control system normally ...
5
Comprehensive Dictionary of Electrical Engineering, Second ...
The circuit is sometimes called the automatic frequency control. See also
automatic frequency control (AFC). automatic focusing on an optical disk, the
process in which the distance from the objective focal plane of the disk is
continuously ...
6
Comprehensive Dictionary of Electrical Engineering
See also automatic frequency control (AFC). automatic focusing on an optical
disk, the ... in focus. automatic frequency control (AFC) electronic circuitry used to
keep the received signal properly placed within the desired IF frequency range.
Phillip A. Laplante,
1999
7
Monochrome and Colour Television
... 493 ADG (automatic degaussing) circuit, 509, 522 Adjacent channel
interference, 154 Aeroplane flutter, 263 AFC (automatic frequency control) tuner,
576 AFC (automatic frequency control) horizontal, 312, 320 AFPC (automatic
frequency ...
8
Build Your Own Low-power Transmitters: Projects for the ...
The traditional analog slide rule dial has largely disappeared from the higher-end
FM receivers, replaced by LCD or LED readouts. Therefore, the digitally tuned
receiver has no need for fine-tuning or automatic frequency control and cannot ...
Rudolf F. Graf, William Sheets,
2001
9
Operation, Echo Box TS-488A/UP.
Refer to appropriate radar manual for corrective measures. 2-33. TRANSMITTER
FREQUENCY PULLING OF RADAR WITH PPI INDICATOR. a. Turn off the
automatic frequency control on the radar receiver. b. With the radar antenna
stopped ...
10
Fundamentals of Single-sideband Communication
Automatic-gain-control circuits and automatic-frequency control squelch circuits
have been omitted for the simplification. Automatic-gain-control circuits that
operate with pilot or reduced carrier ssb signals are described in paragraph 62.
United States. Dept. of the Army, United States. Dept. of the Air Force,
1961
BARANGAN BERITA YANG TERMASUK TERMA «AUTOMATIC FREQUENCY CONTROL»
Ketahui apa yang diterbitkan oleh akhbar nasional dan antarabangsa dan cara istilah
automatic frequency control digunakan dalam konteks perkara berita berikut.
Silicon Vision Announces Bluetooth Low Energy Radio IP SIG …
... Gain Control), AFC (Automatic Frequency Control), State Machine, 4-Wire SPI Interface, Automatic Calibrators for RF/Analog blocks, Bias and ... «Design and Reuse, Jan 15»
Using Sonobond's Ultrasonic Welding System to Weld Tin-Coated …
Sonobond equipment also includes features such as overload protection and automatic frequency control, and when fitted with an optional ... «Azom.com, Ogo 14»
Renewed hope for EmDrive with NASA validation ... is this a …
Future test plans include the development of an automatic frequency control circuit. Test results indicate that the RF resonant cavity thruster ... «Next Big Future, Ogo 14»
Phase-locked loop triumph
Arguably, the AFC (automatic frequency control) on an old-fashioned non-synthesised FM receiver is a rather elaborate PLL. A long time ago, ... «ElectronicsWeekly.com, Jul 14»
A Mod Solves Transmitter Troubles
It would open without warning, causing the exciter automatic frequency control to move the modulated oscillator to a new frequency and then ... «Radio World, Jun 11»
Microsoft Files Patent for Wireless Charging Pad
"A charging device as described herein can utilize a sensor-integrated resonating circuit with automatic frequency control to prove low-cost ... «eWeek, Feb 10»