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- Automatic_frequency_control abstract "In radio equipment, Automatic Frequency Control (AFC), also called Automatic Fine Tuning (AFT), is a method or circuit to automatically keep a resonant circuit tuned to the frequency of an incoming radio signal. It is primarily used in radio receivers to keep the receiver tuned to the frequency of the desired station. In radio communication, AFC is needed because, after the bandpass frequency of a receiver is tuned to the frequency of a transmitter, the two frequencies may drift apart, interrupting the reception. This can be caused by a poorly controlled transmitter frequency, but the most common cause is drift of the center bandpass frequency of the receiver, due to thermal or mechanical drift in the values of the electronic components.Assuming that a receiver is nearly tuned to the desired frequency, the AFC circuit in the receiver develops an error voltage proportional to the degree to which the receiver is mistuned. This error voltage is then fed back to the tuning circuit in such a way that the tuning error is reduced. In most frequency modulation (FM) detectors, an error voltage of this type is easily available. See Negative feedback.AFC was mainly used in radios and television sets around the mid-20th century. In the 1970s, receivers began to be designed using frequency synthesizer circuits, which synthesized the receiver's input frequency from a crystal oscillator using the vibrations of an ultra-stable quartz crystal. These maintained sufficiently stable frequencies that AFC's were no longer needed.".
- Automatic_frequency_control wikiPageExternalLink rx11.en.html.
- Automatic_frequency_control wikiPageID "2527996".
- Automatic_frequency_control wikiPageLength "2086".
- Automatic_frequency_control wikiPageOutDegree "22".
- Automatic_frequency_control wikiPageRevisionID "644437731".
- Automatic_frequency_control wikiPageWikiLink Automatic_gain_control.
- Automatic_frequency_control wikiPageWikiLink Band-pass_filter.
- Automatic_frequency_control wikiPageWikiLink Category:Communication_circuits.
- Automatic_frequency_control wikiPageWikiLink Category:Wireless_tuning_and_filtering.
- Automatic_frequency_control wikiPageWikiLink Crystal_oscillator.
- Automatic_frequency_control wikiPageWikiLink Electrical_network.
- Automatic_frequency_control wikiPageWikiLink Feedback.
- Automatic_frequency_control wikiPageWikiLink Frequency.
- Automatic_frequency_control wikiPageWikiLink Frequency_drift.
- Automatic_frequency_control wikiPageWikiLink Frequency_modulation.
- Automatic_frequency_control wikiPageWikiLink Frequency_synthesizer.
- Automatic_frequency_control wikiPageWikiLink LC_circuit.
- Automatic_frequency_control wikiPageWikiLink Negative_feedback.
- Automatic_frequency_control wikiPageWikiLink Phase-locked_loop.
- Automatic_frequency_control wikiPageWikiLink Radio.
- Automatic_frequency_control wikiPageWikiLink Radio_receiver.
- Automatic_frequency_control wikiPageWikiLink Radio_wave.
- Automatic_frequency_control wikiPageWikiLink Transmitter.
- Automatic_frequency_control wikiPageWikiLink Tuner_(radio).
- Automatic_frequency_control wikiPageWikiLink Voltage.
- Automatic_frequency_control wikiPageWikiLinkText "AFC".
- Automatic_frequency_control wikiPageWikiLinkText "Automatic frequency control (AFC)".
- Automatic_frequency_control wikiPageWikiLinkText "Automatic frequency control".
- Automatic_frequency_control wikiPageWikiLinkText "automatic frequency control".
- Automatic_frequency_control wikiPageWikiLinkText "frequency control".
- Automatic_frequency_control wikiPageUsesTemplate Template:Electronics-stub.
- Automatic_frequency_control wikiPageUsesTemplate Template:Telecomm-stub.
- Automatic_frequency_control wikiPageUsesTemplate Template:Unreferenced.
- Automatic_frequency_control subject Category:Communication_circuits.
- Automatic_frequency_control subject Category:Wireless_tuning_and_filtering.
- Automatic_frequency_control hypernym Method.
- Automatic_frequency_control type Software.
- Automatic_frequency_control type Circuit.
- Automatic_frequency_control type Redirect.
- Automatic_frequency_control comment "In radio equipment, Automatic Frequency Control (AFC), also called Automatic Fine Tuning (AFT), is a method or circuit to automatically keep a resonant circuit tuned to the frequency of an incoming radio signal. It is primarily used in radio receivers to keep the receiver tuned to the frequency of the desired station.".
- Automatic_frequency_control label "Automatic frequency control".
- Automatic_frequency_control sameAs Q220786.
- Automatic_frequency_control sameAs Category:Automatic_frequency_control.
- Automatic_frequency_control sameAs Automatisk_frekvensstyring.
- Automatic_frequency_control sameAs Automatic_frequency_control.
- Automatic_frequency_control sameAs Automatikus_frekvenciaszabályozás.
- Automatic_frequency_control sameAs Automatic_Frequency_Control.
- Automatic_frequency_control sameAs 自動周波数制御.
- Automatic_frequency_control sameAs Automatyczna_regulacja_częstotliwości.
- Automatic_frequency_control sameAs m.07l3pm.
- Automatic_frequency_control sameAs Автоматическая_подстройка_частоты.
- Automatic_frequency_control sameAs Automatisk_frekvenskontroll.
- Automatic_frequency_control sameAs АПЧ.
- Automatic_frequency_control sameAs Q220786.
- Automatic_frequency_control wasDerivedFrom Automatic_frequency_control?oldid=644437731.
- Automatic_frequency_control isPrimaryTopicOf Automatic_frequency_control.