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Low Pass Filters
Refine signal, allowing the transmission of signal below a specific corner frequency, while attenuating the frequencies above.
See Also: Filters, Filter / Amplifiers, EMI Filters, Programmable Filters
- Frequency Devices Inc.
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Low-Pass Filters
Is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design.
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"Standard" RF Low Pass Filters
Coaxial Dynamics "Standard" line of RF Low Pass Filters offers several models to choose from at CW power ratings of 100 watts and 200 watts. These filters cover operating frequencies from 88 MHz to 400 MHz with less than 0.5 dB insertion loss and attenuation levels of 40, 50 and 60 dB.
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Low Pass and Bandpass SMA Coaxial Filters
Fairview Microwave’s bandpass filters were developed for use in various applications including GPS, ISM, RFID and Wi-Fi systems and operate in several bands, some as low as 824 MHz and some as high as 5.875 GHz. Fairview’s low pass filters allow for tailoring of a test setup for a specific application and support upper band edges of 100, 225, 400, 1000, 2000 and 3000 MHz. All of these bandpass filters and low pass filters feature female SMA connectors.
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Series Two Channel Low Pass Filter
SR600
Stanford Research Systems, Inc.
The SR600 series consists of three dual-channel instruments. Each instrument channel has a low-noise preamplifier, a precision high pass or low pass filter section, and an output amplifier. The filters are 8-pole, 6-zero elliptic-type with 115 dB per octave rolloff, 0.1 dB of passband ripple, and 80 dB of stopband attenuation.
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Dual Filter
Trig-TekTM 550D
Two channels with variable high pass and low pass filters in a module 7" high x 2.6" wide
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Band Pass Filters
High-Pass (HPF series), Low Pass (LPF series) and Band Pass (BPF series) Filters are available, providing desired skirt selectivity and rejection levels with minimum insertion loss in the pass band. The filters are offered in all standard waveguide bands covering 18 to 400 GHz depending on our possibility to fulfil the customers' requirements. Dimensions of filters depends on required specifications. .
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Clamp Meters
0.001 mA Current Resolution, Comply With IEC61557-13: Class 2, ≦ 30A/m, True RMS Measurement For All Applications, Low Pass Filter Function
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Low-Pass Filters
Low-Pass Filters from Analog Devices are specifically designed to reject higher frequency noise and unwanted signals while allowing desired signals to pass through. Analog Devices offers an extensive line of continuous time and clock tunable (switched capacitor) devices preconfigured for low-pass filtering. These integrated low pass filters feature a wide range of cutoff frequencies and response characteristics.
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Active Filter
J2190A
The J2190A active filter presents a high impedance (approximately 150kOhms) minimizing the loading of the circuit being tested. The output impedance is 50 Ohms allowing low noise coaxial connections to all typical test equipment. The 0.1Hz-10Hz noise band is common for opamp measurements, voltage regulators and voltage references. Many application notes offer schematics of such a filter for test purposes. An engineer’s time is much too valuable to be spent building test equipment. We have created a 4th order high pass and 4th order low pass filter with an optimally flat response and 0dB gain. Additional filters can be cascaded for even sharper cutoff.
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Lowpass Filters
Frequency range of this lowpass filter is DC to 100 MHz and the passband is 100 MHz. PE8719 lowpass filter is one of over 40,000 RF, microwave and millimeter wave components supplied by Pasternack. Our 5 section low pass filter can be bought and shipped worldwide the same-day as with our other in-stock RF parts.
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PXI I/O Module for Sound and Vibration
JSV-4498-PXI
16-channel ICP analog voltage input Maximum sample rate: 204.8KS/s; simultaneous acquisition Analog-to-digital converter: delta-sigma, 24 bits Phase accuracy < 0.02deg@10KHz Maximum analysis bandwidth：96KHz Input range from ± 10 V to ± 316mV Coupled mode：AC Signal conditioning: anti-aliasing filter Digital filter: user-defined low pass, high pass, band pass, band stop Dynamic range：114 dB ICP Current：0-4 mA, optional Overload indication: software displa
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Bolometer Systems
The detector comes with an IR light collecting cone assembly, vacuum-sealed wedged window, field of view baffling, and low noise electronics. The bolometer system is then outfitted with a single cut-on IR filter or a cold, manually operated, 2 or 3 position filter wheel. We offer a selection of far IR cut-on long pass filters that range from 10 to 285µm.
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64 Channel 16 Bit VME Analog Input Card
PAS 9737/AI
The PAS 9737/AI-SMT provides 64 analog input channels multiplexed into a scanning 16-bit Analog to Digital Converter, (ADC). Low pass filters are provided for the analog input signals and four different cutoff frequencies are available as options.
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ACDC
EC Series
The EC Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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ACDC
ES Series
The ES Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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ACDC
EA Series
The EA Series of line operated power supplies features near constant efficiency over theentire rated input voltage range. These electrically identical families employ a highly efficient, closed loop ripple regulation circuit, which contains a low pass filter. Each stage, transformer, filter and regulator is engineered for maximum efficiency.
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USB I/O Module for Sound and Vibration
JSV-4431-USB
4-channel ICP analog voltage input 102.4KS/s maximumsample rate, simultaneous acquisition Analog-to-digital converter：delta-sigma, 24 bits Phase Accuracy < 0.05deg@10KHz Optional Input voltage range: ±10 V,±5V, ±1Vm ±100mV ； Signal conditioning: anti-aliasing filter Digital filter: user-defined low pass, high pass, band pass, band stop Dynamic range: 100 dB ICP current: 0-4 mA, optional 1-channel analog output voltage：±3.5 V; update rate: 96 kS/s Overload indication: software display
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Frequency Counters
-Frequency Range : 0.2Hz to 5.5GHz Built-in CMOS Gate Array Fast, High-Resolution, 10 Digits Green LED Display Microprocessor Controlled Reciprocal Technique for Low Frequency Resolution Self Diagnosis Routine Total, RPM Function, Period Low Pass Filter(100KHz, -3dB) Rs-232c Interface(Option)
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1.3GHz Frequency Counter
Model 1122 / 1122X
- Wide Frequency Range 0.2Hz to 1.3GHz- 2 Separate Channels, for LOW & HIGH Frequencies- High Sensitivity- 8 Digit Green LED Display- Microcontroller based Advance Technology- Optional RS232 Interface- Reciprocal Counting Technique for High Resolution at Low Frequency- Period Measurement- Low Pass Filter for Noisy Low Frequency (<100KHz)- 4 Selectable Gates (10ms, 100ms, 1sec, 10sec)
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PCI I/O Module for Sound and Vibration
JSV-4461-PCI
2-channel ICP analog voltage inputMaximum sample rate: 204.8KS/s; simultaneous acquisitionAnalog-to-digital converter: delta-sigma, 24 bitsPhase Accuracy < 0.05deg@10KHzMaximum analysis bandwidth：96 KHzInput range from ± 42.4 V to ± 316 mV Coupled Mode: AC, DCDigital filter: user-defined low pass, high pass, band pass, band stopDynamic range: 118 dB; harmonic distortion: -107dB; channel crosstalk: -138dBICP current: 0-4 mA, optional 2-channel analog output range: ±10 V; update rate: 204.8 kS/s
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EMI/EMP Connectors
Filter connector series includes EMI/ EMP/ESD circular, ARINC, D-subminiature and micro-D connector styles. They can be combined with high energy TVS diode technology to achieve lightning and EMP transient protection. Smiths Interconnect's EMI filter connectors use multi-layer ceramic capacitor arrays together with inductive materials to realize robust, high performance low pass filter networks. Where required, transient protection can be combined with EMI /RFI filtering to provide maximum protection. The diodes as well as the EMI filter are packaged separately so the construction of the connector remains modular.
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Passive Components
Ducommun millimeter wave products include various passive components including multi-hole directional couplers (PCM), crossguide couplers (PCC), magic tees (PCT), coax power dividers (PPD), bandpass, low pass and high pass filters (PFB, PFL and PFH), waveguide diplexers (PDC), waveguide transitions (PRC and PTW), waveguide to coax adapters (PTC) and waveguide components (PWS, PWE, PWH, PWM and PWT). These passive components cover frequency range from 8.2 to 110 GHz and feature high performance and low cost.
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100GHz Optical Add/Drop Multiplexer
OADM-1000 (100GHz)
Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai OADM-1000 100GHz optical add/drop multiplexer based on the mature thin-film filter technology, metal seal. With so much great features like low insertion loss, high isolation, wide pass band, flexible configuration and so on. This is the ideal parts for used in DWDM system Add/Drop special wavelength.
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Dual Channel 180 MS/s Digitizer PXI / PXIe Card
GX2482
The GX2482 series are a high performance, dual differential channel, 16-bit digitizer offering high dynamic range and excellent SFDR. The module’s differential inputs, coupled with its low distortion makes it an ideal instrument for analyzing high performance or low level analog signals. Each channel offers 3 selectable low pass filters, a 16 bit, 180 MS/s ADC, and 64 M words of memory for each channel.
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High Speed Data Acquisition Board
MS 1800
*Bus Interface:- 64 Bit PCI Bus with PMC Interface*Virtex-4 FPGA based design*32 channel digital I/O signal*RS232 & RS485 Interface*32MB Flash*2MB Static RAM for data storage*Analog Inputs:- 2 Channel*Input Resolution:- 14 Bits*Sampling rate up to 80MSPS*Filter:- Low Pass Filter for all channels*Two Analog Outputs*14 bit Resolution*Driver interface for Windows2000/XP/VISTA and LINUX OS*Self Test future
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ICP® Accelerometers With Excellent Thermal Stability
The single and triaxial ICP® accelerometers are designed with a low temperature coefficient, wide operating temperature range, and good broadband measurement resolution, making them ideal for any vibration measurement requiring tight control of amplitude sensitivity over a wide thermal gradient. To alleviate the effects of high frequency overloads caused by metal-to-metal inputs, a low pass filter has been incorporated in all models, ensuring accurate data in the frequency range of interest.
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Low Voltage DC / Battery Powered High Voltage Amplifiers
WMA-005 And WMA-005LF
The Falco Systems WMA-005 is a high voltage amplifier that runs from an 24 - 30V DC power supply and can be battery powered if required, e.g. for use in a Faraday cage. Its internal high voltage generator is inductor-free and hence does not spread magnetic interference in sensitive experimental setups. The output noise is impressively low at 3mVrms. For extremely low noise applications where bandwidth is not an issue, a dedicated WMA-005LF version is available that contains an output low pass filter capacitor which reduces the bandwidth to 50Hz, but makes the noise drop to below 0.1mVrms. This bandwidth-limited amplifier is ideal for MEMS or piezo positioning with manual voltage adjustment.
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Low Voltage DC / Battery Powered HV Amplifiers
WMA-01 And WMA-01LF
The Falco Systems WMA-01 is a high voltage amplifier that runs from an 24 - 30V DC power supply and can be battery powered if required, e.g. for use in a Faraday cage. Its internal high voltage generator is inductor-free and hence does not spread magnetic interference in sensitive experimental setups. The output noise is impressively low at 3mVrms. For extremely low noise applications where bandwidth is not an issue, a dedicated WMA-01LF version is available that contains an output low pass filter capacitor which reduces the bandwidth to 50Hz, but makes the noise drop to below 0.1mVrms. This bandwidth-limited amplifier is ideal for MEMS or piezo positioning with manual voltage adjustment.
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Low Voltage DC / Battery Powered HV Amplifiers
WMA-02 And WMA-02LF
The Falco Systems WMA-02 is a high voltage amplifier that runs from an 24 - 30V DC power supply and can be battery powered if required, e.g. for use in a Faraday cage. Its internal high voltage generator is inductor-free and hence does not spread magnetic interference in sensitive experimental setups. The output noise is impressively low at 4mVrms. For extremely low noise applications where bandwidth is not an issue, a dedicated WMA-02LF version is available that contains an output low pass filter capacitor which reduces the bandwidth to 50Hz, but makes the noise drop to below 0.2mVrms. This bandwidth-limited amplifier is ideal for MEMS or piezo positioning with manual voltage adjustment.
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Dual Voltage Buffer with Current Drive
BUF-01
The BUF-01 Voltage Buffer is a dual channel buffer capable of driving up to 50 mA of current on each channel at up to ±10 V output. The buffer has a 2nd order low pass filter with 3 dB point of 119 kHz to remove high frequency noise. The unit’s differential inputs are built to withstand high DC over-voltages up to ±50 VDC and greater than ±100 V transients. Gain of the unit is 1 allowing for minimal insertion issues.
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Handheld Digital Multimeter, 4.5 digit, up to 800 hours battery life
U1282A
60,000 counts resolution on dual display0.025% basic DC voltage accuracy Longer battery life up to 800 hours Certified to IP 67 for dust and water protection Tested to withstand a 3-meter (10-ft) drop Programmable via USB (Download Programming Guide here)CAT III 1000 V/ CAT IV 600 V overvoltage protection Vsense for non-contact voltage detection Square wave output for generating pulse width modulation (PWM) signal Frequency counter Low pass filter
