| 释义 | 
		Definition of preamplifier in English: preamplifiernoun priːˈamplɪfʌɪəpriˈæmpləˌfaɪər An electronic device that amplifies a very weak signal, for example from a microphone or pickup, and transmits it to a main amplifier. 前置放大器 Example sentencesExamples -  If you're interested in one of these link leads (contains a preamplifier and speaker, does not require a battery), and/or VHF and UHF radios to suit, give me a call or email.
 -  We generally call the first stage the preamplifier, though it may be the only amplification stage.
 -  An amplifier probe hybridizes to a preamplifier forming a branched DNA complex and generating enough signal sites to be detected directly after labeling.
 -  To start with, you need a turntable or tape deck, a stereo preamplifier or integrated amp, a computer with a line-in audio jack (most desktops qualify, many laptops don't), and cables to hook them together.
 -  It is possible for the preamplifier to saturate on a strong signal and produce intermodulation products that degrade reception on adjacent channels.
 -  The microphone signal was amplified by a low-noise preamplifier and was processed by a two-phase lock-in amplifier.
 -  The seismic components of vocalizations were filtered and amplified separately from the acoustic signals to compensate for not having a preamplifier for the geophones.
 -  The present invention uses a novel shock-sensing method that is both reliable and low-cost, using a modified head preamplifier to detect servo fields from adjacent disk surfaces, as well as the disk surface being written or read.
 -  In 1960, the concept of combining a mic/line preamplifier, low- and high-frequency equalizer, and an echo send into one small module that used only one connector was revolutionary.
 -  These antennas contain preamplifiers providing gain levels of 26 dB (standard gain) and 35 dB (high gain).
 -  Microphone preamplifiers seem to come in two flavors these days: modern designs with lots of bells and whistles (such as EQ, dynamics and A / D converters) and vintage designs, which tend to take a more minimalist approach.
 -  Placing the preamplifiers as close to the detectors as possible minimizes the output impedance for driving further stages.
 -  This makes it suitable for audio applications, including audio amplifiers and preamplifiers, home entertainment system, mixing desks and audio recording equipment.
 -  It adds an essential component: the decoder, which also serves as a preamplifier that can make audio adjustments and also select from among several sound sources.
 -  The cover has a surface thermally coupled to the preamplifier to conduct heat from the preamplifier.
 -  Electric signals were measured on a set-up described previously, with the modification that a very low-noise homemade current preamplifier was used.
 
 
 Derivativesverbpreamplifies, preamplified, preamplifying priːˈamplɪfʌɪpriˈæmpləˌfaɪ [with object]Amplify (a signal) using a preamplifier.  you have to preamplify the direct guitar signal Example sentencesExamples - All raw myoelectric signals were preamplified.
 - The photodiode signal was preamplified, digitized, and processed by a computer.
 - The PA signal was preamplified and then analyzed by a lock-in amplifier.
 
 
 
    Definition of preamplifier in US English: preamplifiernounprēˈampləˌfīərpriˈæmpləˌfaɪər An electronic device that amplifies a very weak signal, for example from a microphone or pickup, and transmits it to a main amplifier. 前置放大器 Example sentencesExamples -  To start with, you need a turntable or tape deck, a stereo preamplifier or integrated amp, a computer with a line-in audio jack (most desktops qualify, many laptops don't), and cables to hook them together.
 -  Electric signals were measured on a set-up described previously, with the modification that a very low-noise homemade current preamplifier was used.
 -  If you're interested in one of these link leads (contains a preamplifier and speaker, does not require a battery), and/or VHF and UHF radios to suit, give me a call or email.
 -  An amplifier probe hybridizes to a preamplifier forming a branched DNA complex and generating enough signal sites to be detected directly after labeling.
 -  It is possible for the preamplifier to saturate on a strong signal and produce intermodulation products that degrade reception on adjacent channels.
 -  Microphone preamplifiers seem to come in two flavors these days: modern designs with lots of bells and whistles (such as EQ, dynamics and A / D converters) and vintage designs, which tend to take a more minimalist approach.
 -  This makes it suitable for audio applications, including audio amplifiers and preamplifiers, home entertainment system, mixing desks and audio recording equipment.
 -  Placing the preamplifiers as close to the detectors as possible minimizes the output impedance for driving further stages.
 -  In 1960, the concept of combining a mic/line preamplifier, low- and high-frequency equalizer, and an echo send into one small module that used only one connector was revolutionary.
 -  The seismic components of vocalizations were filtered and amplified separately from the acoustic signals to compensate for not having a preamplifier for the geophones.
 -  The microphone signal was amplified by a low-noise preamplifier and was processed by a two-phase lock-in amplifier.
 -  The present invention uses a novel shock-sensing method that is both reliable and low-cost, using a modified head preamplifier to detect servo fields from adjacent disk surfaces, as well as the disk surface being written or read.
 -  The cover has a surface thermally coupled to the preamplifier to conduct heat from the preamplifier.
 -  These antennas contain preamplifiers providing gain levels of 26 dB (standard gain) and 35 dB (high gain).
 -  We generally call the first stage the preamplifier, though it may be the only amplification stage.
 -  It adds an essential component: the decoder, which also serves as a preamplifier that can make audio adjustments and also select from among several sound sources.
 
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