preamplifier

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pre·am·pli·fi·er

 (prē-ăm′plə-fī′ər)
n.
An electronic circuit or device that detects and strengthens weak signals, as from a radio receiver, for subsequent, more powerful amplification stages.

preamplifier

(priːˈæmplɪˌfaɪə)
n
(Electronics) an electronic amplifier used to improve the signal-to-noise ratio of an electronic device. It boosts a low-level signal to an intermediate level before it is transmitted to the main amplifier. Sometimes shortened to: preamp

pre•am•pli•fi•er

(priˈæm pləˌfaɪ ər)

n.
a device in an amplifier circuit, as of a radio or phonograph, that increases the strength of a weak signal for detection and further amplification.
[1930–35]
Translations

preamplifier

[ˌpriːˈæmplɪfaɪəʳ] Npreamplificador m

preamplifier

, preamp (inf)
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References in periodicals archive ?
I then took the pre-amplifier, electrode apparatus and my laptop out into the field to see if I could find and record this signal in other locations.
For this scheme, the needed probe hardware is minimal, there are no critical alignment issues, and the same pre-amplifier that is normally used for sensing the tunneling current when using the scanning tunneling microscope probe can be used to amplify the tuning-fork signal.
Available in two configurations, the HL 6000 system includes: a base controller, pre-amplifier, two piezo ceramic accelerometers, head phones, 120 VAC battery charger, all necessary cables and manual.
The unit can be used as a booster, inline or pre-amplifier, and has an RS-232 serial interface for system integration and diagnostics.
The company's RC-995 BX stereo pre-amplifier was designed in response to "numerous" consumer requests for a pre-amplifier with a high-performance phonograph stage, said Michael Bartlett, Rotel's vice president and general manager.
The IDT GX72170 is a broadband, low power consumption, single channel amplifier die, which integrates a linear pre-amplifier and a post-amplifier with AC-coupled 100?
Finally, an erbium-doped fiber pre-amplifier boosts the return optical signal.
Editor's Note: The K-Factor Scaler is used as a pre-amplifier to amplify the pulse output from turbine flow meters such as the Ultima F6202-F (SAE) and the F6222-F (BSPP) for transmission to F6600 (AC) and F6650 (DC) Series digital displays.
Audio capability of the kit is supported by the inclusion of audio record and playback circuitry in the processor, coupled with an on-board audio pre-amplifier, integrated in the image sensor.