Preamplifiers
Detect and strengthen a signal prior to greater amplification.
See Also: Amplifiers, RF Amplifiers, Current Amplifiers, Audio Amplifiers, Voltage Amplifiers, Transconductance Amplifiers, Op Amps, Klystron, Instrumentation Amplifiers, Distribution Amplifiers
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Product
Mini Receiver
FB7-NX
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In about 1935, the National Radio Company of Malden, Mass., brought out a “hot” high frequency receiver, called the FB7, and the subsequent FB-7X. It featured a super-hetrodyne design with plug-in coils that gave it a broad frequency range. The “X” model also incorporated a crystal filter in the intermediate frequency section, thus giving it additional selectivity. The receiver was viewed by radio amateurs as a technological breakthrough, and it was also used commercially for point to point high frequency communications. As the receiver did not have an internal RF amplifier section, a separately tunable RF amplifier was later provided in a separate enclosure for additional performance capabilities. Now, National RF, Inc., is resurrecting the fabled receiver name with an all solid-state, hot mini receiver, which also utilizes plug-in coils to cover the HF spectrum. The mini-receiver is designed for use by radio amateurs as well as serious short-wave listeners, and allows reception of AM, CW, and SSB signals. It incorporates a super-hetrodyne design with a dual gate FET built-in RF preamplifier and a ceramic filter for selectivity, often required when used in a crowded amateur radio band. In addition, the receiver has a buffered rear panel output of the high frequency oscillator for use with either a frequency counter for exact receive frequency display, or for interface with an outboard transmitter. A rear panel jack is also provided for muting the receiver when a transmitter is placed into the transmit mode. And, the receiver is small enough to fit into carry-on luggage and taken on trips when it is desired to “keep an ear” on amateur radio or other high frequency activity. The receiver utilizes rear panel plug-in coil assemblies which contain the RF amplifier, mixer, and oscillator tuned circuits. Each plug-in coil assembly also comes with a separate dial scale, which is inserted onto the front panel for displaying the tuned frequency. A very smooth 6 to 1 planetary drive is used for tuning the receiver. Other front panel controls include RF preamplifier peak, volume control, Beat Frequency Oscillator adjustment, and RF gain control. Other switches include filter bandwidth, AM/CW/SSB selection, Power, and a general coverage/band spread control for certain plug-in assemblies. The receiver is intended to drive head-phones via a rear panel jack, but has sufficient output to drive a small external speaker.
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Product
Instrumentation
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Unholtz-Dickie designs and manufactures a variety of transducer signal conditioners, accelerometers, remote charge preamplifiers, vibration monitors & limiters, transducer testers, buffer amplifiers and other special purpose instrumentation accessories for vibration testing.
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Product
PXIe-5668, Up to 26.5 GHz PXI Vector Signal Analyzer
783124-01
Signal Module
Up to 26.5 GHz PXI Vector Signal Analyzer - The PXIe‑5668 offers wide bandwidth with high-performance measurement performance and speed. It meets the challenging requirements of applications such as wireless communications, radio frequency integrated circuit characterization, RADAR test, and spectrum monitoring and signal intelligence. With its implementation as a PXI instrument, the PXIe‑5668 also features the fast measurement speed required for high-volume manufacturing test, and multi-instrument synchronization capabilities for phase-coherent MIMO test. You can use the optionally included PXIe-5698 preamplifier to improve dynamic range and sensitivity near the instrument noise floor.
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Product
Current Preamplifier
1212
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The Model 1212 Current Preamplifier is designed as a low cost, gerenal purpose, benchtop instrument to provide a high performance detection system for small ac and dc currents. The 1212 operates with a virtual ground at its input which mitigates unpredictable high frequency rolloff due to input cables and stray capacitance.
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Product
Pulse energy and power measuring instrument
LEM 2410
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A touch panel and function keys make this device comfortable and easy to handle. The preamplifiers integrated into the device and the choice of sensor sensitivity allow a wide range of sensor heads to be used. The large graphic display offers space for a variety of display and analysis choices. The digital display can be used for determining the energy, frequency and average power.
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Product
Accelerometer with Built-In Preamplifier
NP-3000 series
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This sensor converts mechanical vibrations into electric signals in proportion of vibration acceleration."The NP-3000 series offers ultra-small masses of 0.4g, tri-axial type which can obtain vibration directions of XYZ at once, waterproof, high sensitive type, and so on. You can choose the most suitable detector according to the purpose of use, operation conditions, and applications. Since the preamplifier is built in the detector main body of the NP-3000 series, sensor signal input part can be made relatively inexpensively and it can be directly connected to analysis equipment such as our FFT analyzer."
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Product
Amplifiers
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Teledyne Lincoln Microwave design and manufacture RF amplifiers utilising the latest semiconductor technology. Our portfolio includes low noise amplifiers (LNA’s), power amplifiers and pre-amplifiers. These can incorporate linearization, filtering, phase and amplitude control functionality.
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Product
Amplifiers
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Becker Nachrichtentechnik GmbH
Becker Nachrichtentechnik GmbH offers a large portfolio of high performance broadband RF amplifiers. Optimized for linearity, high dynamic range and low noise, they cover all widely used radio standards like cellular, satellite radio, TETRA/BOS, GNSS, GPS, 802.11, including the new bands for LTE-U. They amplify wideband radio signals from shortwave over UHF, VHF up to 18 GHz in 50 Ohm technology (I-band, G-band, P-band, L-band, S-band, C-band and X-band). They are used as compact RF drivers, antenna pre-amplifiers or RF boosters in a variety of applications ranging from tunnel radio coverage extension, over airspace radio monitoring to in-ear monitoring and can also be offered as 1U 19” rack variants. Due to their advanced design, the power consumption is significant lower than typical industry alternatives, saving cost at customers with respect to cooling.
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Product
FieldFox Handheld Microwave Signal Analyzer, 44 GHz
N9961B
Signal Analyzer
A lightweight, durable, software-enabled, microwave signal analyzer, interference analyzer, distance-tracking generator, preamplifier, power meter, and more.
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Product
Saluki SE4002 FET Input Preamplifier
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The SE4002 is a low-noise, ultra-high input impedance preamplifier with excellent common-mode rejection. It is designed to work with any Saluki digital lock-in amplifier. The preamplifier minimizes noise and pickup in the connecting lines and reduces measurement time in noise-limited experiments.
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Product
(40×70×12mm) Single Channel Small Form Factor Gain Block Pre-Amplifier EDFA Module
SPA4300-GM01
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Hangzhou Huatai Optic Tech. Co., Ltd.
SPA4300-GM01 is a single channel Gain Block Pre-Amplifier EDFA module , adopts subminiature 40×70×12mm compact package, combined with artistic package and best optic performance, creating the best flexible and variable low-cost amplifier in the market. This module is suitable for multiple network application, especially the application that requires 40GB/S transmission speed.
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Product
X-Ray And Gamma Detector Systems
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The XR-100CR is a new high performance x-ray detector, preamplifier, and cooler system using a thermoelectrically cooled Si-PIN photodiode as an xray detector. Also mounted on the 2-stage cooler are the input FET and a novel feedback circuit. These components are kept at approximately -55 °C, and are monitored by an internal temperature sensor. The hermetic TO-8 package of the detector has a light tight, vacuum tight thin Beryllium window to enable soft xray detection. The XR-100T-CdTe represents a breakthrough in xray detector technology by providing “off-the-shelf” performance previously available only from expensive cryogenically cooled systems. The XR-100-CdTe is also suited for measuring gamma rays.
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Product
16 Channel USB Sensor Interface
RogaDAQ16
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With the introduction of the RogaDAQ16 USB 2.0 data acquisition system, a new age of measurement technology begins.*USB 2.0 / 480MBIT (USB1.1/12MBIT COMPATIBLE)*16 analog input channels (16bit/500kHz max.)*ICP ® ( IEPE ) sensor supply (24V/4mA)*0.125V to 10V input range*Individual preamplifiers*4 analog output channels (16bit/100kHz)*Powerful DSP (255MIPS) for filtering, control etc.*24 digital I/Os*Optional 24bit counter, timer, PWM, incremental encoder*Free drivers for major application software*including DASYLab; LabView & DiaDem drivers & RogaRec Software
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Product
Preamplifier, 10 MHz to 4 GHz
87405B
Amplifier
Preamplifiers and System Noise Figure Application Note This note discusses noise figure basics including applications and characteristics of Keysight simplifier technology. Highlighted are Keysight's 87405C portable preamplifiers that provide an exceptional gain of 25 dB up to 18 GHz and a probe-power bias connection which eliminates the need for an additional DC power supply. Read the Preamplifiers and System Noise Figure Application Note now!
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Product
Ambient Single Point Kelvin Probe System
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This single point Kelvin Probe System operates under ambient conditions and is small enough to be placed in a customized glowth box. The probe head operates with an oscillating membrane and can be easily exchanged. The preamplifier is integrated inside the probe head.
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Product
ICP Microphone System
378A14
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This model includes a 1/4" microphone cartridge, a mated preamplifier with TEDS, and system calibration.
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Product
ICP Microphone System
HT378B02
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This model includes a 1/2" microphone cartridge, a mated preamplifier with TEDS, and system calibration. Click the following for individual component information.
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Product
Microphone Preamplifier
426B31
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Performance:Nominal Microphone Diameter:1/4" Frequency Response:3.98 to 126000 Hz3.98 to 126000 10.0 to 126000 Hz10.0 to 126000 HzElectrical Noise (A-weight)3.8 TEDS CompliantYes
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Product
Shield Level / Pathloss Equipment
SG1000B/PR1000A
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The SG1000 Signal Generator and PR1000A Preamplifier have been designed to simplify the measurement of shielding integrity in a shielded enclosure. When coupled with a high stability spectrum analyzer and an appropriate selection of test antennas, the SG1000/PR1000A combination can measure shielding effectiveness at all of the NSA 94-106 (supersedes NSA 65-6) defined test frequencies from 1 kHz to 10 GHz.The PR1000A amplifies the received signal from the test antenna and overcomes the high noise figure of the companion test receiver or spectrum analyzer. The PR1000A will ensure that the system noise figure will be less than 4.5 dB at all test frequencies from 1 kHz to 10 GHz. When used with a spectrum analyzer measurement bandwidth of 100 Hz, the system exhibits a sensitivity of -150 dBm at the test antenna output.To overcome high cable loss between the test antenna and the PR1000A assembly at 10 GHz, a remote low noise pre-amplifier (Praxsym PN 310-010091-001) is mounted directly onto the 10 GHz antenna.
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Product
Photometer
DSP 10
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Instrument Systems Optische Messtechnik GmbH
The preamplifier of the DSP 10 photometer was specially developed for fast “on-the-fly” measurements with the AMS and LGS series of goniophotometers from Instrument Systems. Spatial light distribution can be measured in a fraction of the time needed with conventional systems.
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Product
PXIe-5668, Up to 26.5 GHz PXI Vector Signal Analyzer
783156-02
Signal Module
Up to 26.5 GHz PXI Vector Signal Analyzer - The PXIe‑5668 offers wide bandwidth with high-performance measurement performance and speed. It meets the challenging requirements of applications such as wireless communications, radio frequency integrated circuit characterization, RADAR test, and spectrum monitoring and signal intelligence. With its implementation as a PXI instrument, the PXIe‑5668 also features the fast measurement speed required for high-volume manufacturing test, and multi-instrument synchronization capabilities for phase-coherent MIMO test. You can use the optionally included PXIe-5698 preamplifier to improve dynamic range and sensitivity near the instrument noise floor.
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Product
Microphone Preamplifier
426A11
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1/2-inch ICP preamplifier with gain and filter switches (for prepolarized microphones)ICP(R) low noise preamplifier with gain, filters, and TEDS
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Product
Scanner Probe
RFS set
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The RFS set consits of three passive near field probes designed for the use in a measurement scanner during the development of E-field and magnetic field. They are designed for frequency ranges of 30 MHz to 3 GHz. The probe heads of the RFS set allow for close measurements needed to correctly localize interference sources on an electronic assembly. They document the whole image of the device under test`s near field. The scanner probes have a sheath current attenuation and are electrically shielded. They are connected to a spectrum analyzer or an oscilloscope with a 50 Ω input. They do not have an internal terminating resistance. The measuring signal can be increased with PA 203 or PA 303 preamplifier. On request RFS, LFS and XFS scanner probes can be produced.
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Product
Headphone Test Fixture
AEC206
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The Larson Davis Model AEC206 Binaural Test Fixture is the tool for testing supra-aural, circumaural, supra-concha, intraconcha, and insert-type headphones. Preassembled with IEC 60318-4 (711) occluded-ear simulators and TEDS compatible preamplifiers that provide electronic calibration information, the Model AEC206 is user-friendly and easy to learn. Additionally, calibration is a simple process—a custom adapter is included for the Model CAL250 acoustic calibrator or similar device.
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Product
Modular Pulse Processing Electronics
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CAEN provides a complete and ever increasing set of instrumentation, from Preamplifiers to Data Acquisition to Triggering Electronics and Logic Functions. Most of the instrumentation is available in the most popular standard form factors and bus protocols, such as VME, NIM, CAMAC and Desktop.The Desktop is the stand alone form factor of the CAEN products. It provides the same performances of the other form factors and take the advantage of an easier and portable use, requiring no crates.
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Product
Programmable Current Preamplifier
99539
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The Model 99539 is a modular, multi-channel current preamplifier with parallel, logic level, gain control input. It consists of circuit boards which plug into a 3 1/2" high by 19" wide rack chassis.
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Product
Acoustic Emission Sensors
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Acoustic wave (acoustic emission) sensors are the ceramic piezoelectric transducers converting the mechanical elastic acoustic waves generated in the material (e.g. elastic waves occur when a material cracks, wears, deforms, or corrodes) to electrical signals. The electrical signals are then amplified and filtered by a preamplifier and then transmitted to a special acoustic emission acquisition instrument for further data processing and analysis.
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Product
Microphone Preamplifier
HT426E01
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Nominal Microphone Diameter1/2Frequency Response Electrical Noise(at 22 C) (Flat 20 Hz to 20 kHz)Distortion (3 V rms input at 1 kHz)<-70 dB<-70 dB[1] EnvironmentalTemperature Range (Operating)-40 to +248 FExcitation Voltage 20 to 32 Constant Current Excitation 2 to 10 mA
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Product
(40×70×12mm) Full Function Single Channel Small Form Factor Pre-Amplifier EDFA Module
SPA4300-FM01
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Hangzhou Huatai Optic Tech. Co., Ltd.
SPA4300-FM01 is a full-function single channel Pre-Amplifier EDFA module with digital control electronics, adopts subminiature 40×70×12mm compact package, combined with artistic package and best optic performance, creating the best flexible and variable low-cost amplifier in the market. This module is suitable for multiple network application, especially the application that requires 40GB/S transmission speed.
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Product
(70×90×15mm) Full Function Single Channel MSA Compact Pre-Amplifier EDFA Module
SPA4300-FM02
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Hangzhou Huatai Optic Tech. Co., Ltd.
SPA4300-FM02 is a full-function optical Pre-Amplifier with digital control electronics, adopts 70×90×15mm MSA compact package. It is featured with high reliability, superior optical performance and compact reasonable configuration by Industrial standard, creating the most flexible and variable low-cost amplifier in the market. This module is suitable for multiple network application, especially the application that requires 40GB/S transmission speed.
