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
-
Product
Preamplifiers
AH-series
-
A broad mix of in-line preamplifiers and accessories are offered to enhance hydrophone measurements by increasing the gain, preserving the flatness response, extending the dynamic range, and minimizing reflections.
-
Product
Externally Polarized Precision Condenser Microphones & Preamplifiers
-
Externally polarized microphones set the initial standard for all acoustic test and measurement applications. They rely on a dedicated 200V power supply and specialized cables with 7-pin LEMO® connectors. Their straightforward design supports a wide product range. Often chosen as replacements for existing models or when prepolarized alternatives are unavailable.
-
Product
Preamplifiers
-
A.H. Systems'' Preamplifier line is an excellent choice with a rugged design, no hassles with soldering your own power leads and they improve overall system sensitivity by at least 20 dB. All of A.H. Systems'' Preamplifiers come with a 12-volt (or 15-volt) DC regulated power source. A low voltage indicator confidently allows you to power the amplifier with your own external 12-volt DC battery. This makes it a convenient choice for field measurements. See table below for amplifier specifications.
-
Product
Preamplifiers
LNA Series
-
Low noise amplifier with 12.5 dB of gain covering the nominal frequency range 1 MHz to 3 GHz and can be used in the range from 200 kHz to 4 GHz. With its high gain and low noise figure, it will significantly increase the sensitivity of virtually all spectrum analyzers and other RF measuring instruments. All measuring instruments have a 'noise figure', which is a measure of how good the instrument is at measuring low level signals, the lower this figure, the better, although the lowest signal level will still be governed by the measurement bandwidth. A typical spectrum analyzer may have a noise figure of 20 dB or more, whereas a typical receiver may have a noise figure of 10 dB. The preamplifier has a noise figure of typically 4 dB, significantly enhancing the low level performance of such instruments, enabling signals that were previously masked by noise to be seen.
-
Product
Preamplifiers
-
The primary function of a preamplifier is to extract the signal from the detector without significantly degrading the intrinsic signal-to noise ratio. Three basic types of preamplifiers are available: the current-sensitive preamplifier, the parasitic-capacitance preamplifier, and the charge-sensitive preamplifier. ORTEC manufactures a preamplifier to fit your detector, your application, and your budget.
-
Product
Low Noise Differential Preamplifiers
-
Provide a high gain amplification to 1MHz with an AC output derived from a very low noise FET instrumentation amplifier. Each model has fixed gain settings of x1 (0dB), x10 (20dB), x100 (40dB) and x1000 (60dB) over a selectable bandwidths of 100Hz, 1kHz (HP), 3kHz, 30kHz, 100kHz and 1MHz (7000 model only). Noise referred to input is 7nV√Hz and common mode rejection is >100dB at 1kHz. Momentary pushbutton switches are provided that control coupling, bandwidth, gain and channel on/off selections. BNC connectors are provided for single-ended and differential input, ac output, and dc output (optional) connections.
-
Product
Modern Prepolarized Precision Condenser Microphones & Preamplifiers
-
Modern prepolarized microphones are designed with newer technology than traditional externally polarized microphones. Prepolarized microphones have many advantages over the externally polarized models. They use ICP® power circuitry invented for sensors by PCB®. By applying a polymer coating to the top of the backplate and embedding a charge on it, expensive 200V power supplies can be eliminated and 2-20 mA constant current supplies or signal conditioners can be used as the power source.
-
Product
Precision Condenser Microphone
378A12
-
1/4-inch pressure prepolarized 377A12 microphone, with 1/4-inch preamplifier 426B03 and TEDS v0.9
-
Product
The Golden STM
-
*Golden (chemically resistive) vibration isolated STM body with implemented preamplifier*Computer with PCI board based SPM controller *Anfatec Scan & Anfatec Present*19“ STM controller (extra low noise 24 bit converters)*HV display for z-direction*High voltage amplifiers for the x-y-tube scanning*Optional: PC controlled bi-potentiostat and electrochemical cell
-
Product
SparkFun Electret Microphone Breakout
-
This small breakout board couples an Electret microphone (100Hz--10kHz) with a 60x mic preamplifier to amplify the sounds of voice, claps, door knocks or any sounds loud enough to be picked up by a microcontroller’s analog-to-digital converter. Each breakout comes fully assembled and works from 2.7V up to 5.5V.
-
Product
Acoustic Emission Sensors
-
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.
-
Product
Noise Figure Analyzer, Multi-touch, 10 MHz to 7 GHz
N8974B
Low-Frequency Noise Analyzer
The N8974B high performance noise figure analyzer is designed to make fast, accurate and repeatable noise figure measurements. When paired with an SNS Series noise source and U7227 Series USB preamplifier the ENR data from the SNS and USB preamplifier data automatically downloads into the N8974B.
-
Product
Amplifier Module
LNAM-LPA
-
We offer an evaluation board and case for the LNAM-B and LNAM-FBX modules. This Laboratory PreAmplifier (LPA) solution is powered by a switch-mode power supply and gives access to the LNAM in- and outputs via BNC sockets.
-
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.
-
Product
Current Sensors
-
Our current sensors were designed for a simple, customer-specific construction of niobium wire wound magnetometers, gradiometers or preamplifiers for small current or voltage signals.
-
Product
Microphones
-
All these measurement microphones have a XLR connector and require a phantom power. They can be connected to specially equipped soundcards or pre-amplifiers, only.
-
Product
350 MHz Preamplifier
SIM914
-
Stanford Research Systems, Inc.
The SIM914 350 MHz Preamplifier contains two wide-bandwidth, DC-coupled amplifiers, each with a gain of 5 (14 dB). Its fast rise time, low noise and excellent DC accuracy make it an ideal instrument for amplifying signals like those from photomultiplier tubes and photodiodes.
-
Product
Mini Receiver
FB7-NX
-
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.
-
Product
Pre-Amplifiers
MPR, MDA series
-
MPR, MDR series provides low noise, high gain and wideband to improve dynamic range for emission testing. We also offer customized model for variable requirments.. Example 30M-1000MHz with band-pass filter Amprifier unit for connecting antenna directly
-
Product
Charge Sensitive Preamplifier-Discriminator
A101
-
Model A101 is a hybrid charge sensitive preamplifier, discriminator, and pulse shaper developed especially for instrumentation employing photomultiplier tubes, channel electron multipliers and other low capacitance charge producing detectors in the pulse counting mode. The A101 is widely used in laboratory and commercial applications for mass spectrometers, laboratory and research experiments, aerospace instrumentation, medical electronics, and electro-optical systems.
-
Product
Noise Figure Analysis Using NI PXI RF Test Instruments
NI-RFmx Noise Figure
Test Instrument
Measure noise figure, gain, Y-factor, effective temperatures, hot and cold power, and moreOptimized calibration and measurement routines for multi-DUT test using Y-factor and cold sourceSupports the PXIe-5668R 26.5 GHz VSA, the PXIe-5698 26.5 GHz preamplifier, and VSTsDesigned for use with industry-standard noise sources such as the Noisecom NC346 Series
-
Product
Noise Figure Measurements With Vector Correction
S97029B
-
The instrument’s standard receivers are used for noise figure measurements with the S97029B. An external preamplifier and filter(s) is required for devices with < 30 dB of excess noise (gain plus noise figure in dB)
-
Product
16 Channel USB Sensor Interface
RogaDAQ16
-
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
-
Product
Low Cost Microwave Wideband PIN Preamp Receivers
MR21 (40KHz~18GHz)
-
Hangzhou Huatai Optic Tech. Co., Ltd.
MR21 series microwave wideband optical receiver, adopts High linear PIN diode and Low noise pre-amplifier IC, within bandwidth of 40KHz~18GHz, they are featured with excellent linearity, high responsibility and superior flatness of the RF response in both, power and phase. They provide an outstanding linearity fiber optical communication for analogue wideband microwave application. Due to avoidance of using expensive coaxial cable or wave guide, there will be no limitation in transmission distance, which improves the signal quality and reliability of the microwave communication. They can be widely applied in microwave communication system such as remote wireless, timing and reference signal distribution, telemetry, measurement and delay line etc as well as 10Gb/s and 18Gb/s high speed communication system.
-
Product
ICP Microphone System
HT378B02
-
This model includes a 1/2" microphone cartridge, a mated preamplifier with TEDS, and system calibration. Click the following for individual component information.
-
Product
High Impedance Preamplifier
1671
-
The Model 1671 is a single ended low noise field effect transistor
-
Product
Current Preamplifier
1211
-
The model 1211 Current Preamplifier was designed to provide all of the features required of a modern laboratory preamplifier. It measures cur rents with full scale sensitivity ranging from 10 to 10 amperes.
-
Product
FieldFox Handheld Microwave Spectrum Analyzer, 4 GHz
N9933B
Spectrum Analyzer
A lightweight, durable, microwave spectrum analyzer, interference analyzer, distance-tracking generator, preamplifier, power meter, and more.
-
Product
Ambient Single Point Kelvin Probe System
-
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.
-
Product
Precision Current Preamplifier
SIM918
-
Stanford Research Systems, Inc.
The SIM918 Current Preamplifier is ideal in applications in which the input offset voltage must be kept to a minimum. The DC voltage difference between the two inputs (current input and voltage bias) is accurately measured every 2 seconds, and is nulled.
