Active Filters
Require power to operate, using active devices and passive components in a frequency-selective network, only passing certain frequencies.
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Active Filters
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Power electronic devices used to enhance power quality by actively compensating for current/voltage harmonics, reactive power, and voltage imbalances.
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Active Filters
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Analog Devices’ specially designed active filter products can accommodate any frequency response (low-pass, high-pass, or band-pass) and a wide range of frequencies. Our line of continuous time and switched capacitor filters provides simple, flexible frequency discrimination solutions.
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Wideband Active Filters
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Analog Devices’ family of fixed and tunable wideband active filters operating up to 28 MHz bandwidth support a wide range of wireless communications, signal conditioning, and RFID applications. Single-channel and dual-channel options are available.
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Active Filter
J2190A
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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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Ultra-Low Noise Filter, 42 V / 105 MA, 50 Ω
N1298B
Noise Filter
The N1298 Series is a collection of low noise filters for the Keysight B2960 Series 6.5-digit low noise source.
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Low-Noise Filter, 210 V / 3 A
N1298C
Noise Filter
The N1298 Series power source accessories are a collection of low noise filters for the Keysight B2960 Series precision source / measure units (SMUs).
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Parallel Active Multifunction Filter
SINAF 3.0
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Lifasa - International Capacitors, SA
The active filters offer the best possible solution to solve the problems related to the quality in the electrical network, both in industrial three-phase installations, as commercial or service installations. These problems are caused, not only by the harmonics, but also by the consumption of reactive power (generally of capacitive type).
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Active Optics
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Radiall designs and manufactures end-to-end optical links for massive data transfers in harsh environments.
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Bandwidth-Tunable Filters
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Through cascading a low-pass tunable edge filter with a long-pass tunable edge filter, one can achieve a new type of bandwidth-tunable filter whose passband width is variable while its center wavelength is still tunable. With such a device, you can
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Activity Detection Unit
DG009-M1
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Many advanced EW receivers, particularly those associated with ECM jamming systems, do not require the high resolution frequency information associated with a DFD or IFM based receiver. This is typically the case where a single pulse present within a broad frequency band is required to be detected and instantaneously down-converted to an IF band.TDS manufactures a range of Frequency Activity Detectors (FADs) also known as Activity Detection Units (ADU) which perform frequency measurement of an RF pulse and output data in as little as 15ns. The basis of these products is TDS’s ability to produce high performance broadband channelisers and integrated detectors. These devices are ideal for receivers which must operate in very high pulse density environments.
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Filters & Switch Filter Banks
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PMI offers the highest quality filters, switch filter banks, filter assemblies, diplexers, multiplexers for industrial and military applications in the frequency range of DC to 40 GHz. All PMI’s Switch Filter Banks use PMI’s proprietary Solid-state Switch designs, which offer high speed and improved performance. While there are many standard models, PMI can design and build to meet your specifications.
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Precision Active Oscilloscope
CircuitMaster 4000M
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The CircuitMaster 4000M Precision Active Oscilloscope is unlike any other oscilloscope as it provides some innovative test and measurement functions that enable engineers and technicians to perform several new types of circuit analysis. The CircuitMaster 4000M is designed for safe probing of closely spaced components by adding precision DC measurement, signal storage and analysis functions to a traditional oscilloscope design.
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Optical Filters
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Alnair Laboratories Corporation
The filter exhibits an ultra-sharp roll-off of 1500dB/nm(12dB/GHz), without compromising the flexibility ofbandwidth- and wavelength-tuning. Ideal for DWDMchannel selection and removing ASE noise.
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Sine Filters
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Sine Wave Output Filter Modules provide satisfactorily smoothed sinusoidal waveform with low residual ripple form square waveform with high voltage spikes, present at the output of motor drives.
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RF Filters
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CTS develops and manufactures high-end radio frequency (RF) filters used by various technologies to block out or filter certain signal frequencies. In 1982, CTS invented the ceramic monoblock, and ever since, our ceramic RF filters have been setting the industry standard in terms of lowest insertion loss, attenuation /rejection/isolation, Q-factor, size, power handling, and transition slope. Our portfolio includes band-pass filters, notch filters, low-pass filters, delay line filters, diplexers, duplexers, and triplexers/multiplexers.
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Benchtop Water Activity Meters
AQUALAB
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Measure water activity with an average 5 minute read time and ±0.003 aw accuracy.
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Gas Filters
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WITT gas filters enable the finest filtering of impurities in technical gases such as acetylene, argon., oxygen, hydrogen, methane, carbon dioxide, helium, compressed air and ethylene. They thus protect downstream equipment and systems. Some gas filters are also referred to as gas cleaners.
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Active Splitter for CATV/SATV
HGS02
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Hangzhou Huatai Optic Tech. Co., Ltd.
*Excellent, zinc alloy die-casting chassis. *All ports can be passed by DC.* 75ΩBritish F-type connector.* With separate holes for easy installation. *Low noise, high isolation design. *Frequency 950-2150MHz.
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Individual Optical Filters
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Our comprehensive line of Semrock optical filters helps your design attain the best signal-to-noise ratios. Steep spectral edges maximize useable bandwidth, and high transmission or reflection captures the brightest images with best-in-class Flatness. Deep and extended blocking are optimized for your application, minimizing background and crosstalk while reducing cost. Select from the extensive catalog or go with a custom filter to your exact specifications, and remain confident of uncompromising quality, reliability, and reproducible results.
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SIM Filter
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The CFL SIMF, Cable Fault Secondary Impulse Filter from SCOPE is the ultimate solution for locating underground cable faults in minimum time. It uses advanced technology for fault distance measurement which helps even an unskilled operator to locate the fault accurately.
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DC Filter Inductors
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Osborne DC filter inductors (aka filter chokes) are commonly used in AC to DC conversion circuits to present an inductive voltage drop to the AC component of rectified current. This inductive voltage drop acts as a filter. Osborne designs filter inductors to components to function effectively (without saturation) in the presence of the DC current. Osborne will work with you to mitigate the impact of ripple frequency in conversion circuits. Every Osborne DC filter choke is designed for high performance with special consideration given to your circuit´s power supply frequency and conversion configuration.
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Band Pass Filters
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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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High-Power Filters
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Beehive Electronics designs custom high power RF filters used in vacuum coating systems. Our experience spans from kilohertz to gigahertz and power levels up to 50 kilowatts. We provide a turnkey solution: we design, build, and test the filters to the customer's specification.
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SWITCHABLE FILTER BANKS
FLT-1 WB
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Matrix Test Equipment Incorporated
The Model FLT-1-WB is our Wide Bandpass filters for measuringthe Video Carrier and the Composite Second Order Beatdistortion on both sides of the carrier.
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Active Optical Connectors
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Panasonic Industrial Devices Sales Company of America
All-In-One Design, Integrated Fiber Cable for High-Speed Transmission.Panasonic, a worldwide leader in Connector Products, offers the V Series Active Optical Connectors. Featuring a built-in Laser Diode and Photodiode along with an electrical/optical conversion function, the V Series is an all-in-one optical transceiver capable of transmission rates up to 8 Gbps.
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Filter Design Software
QuickFil
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QuickFil is a software for designing passive electronic filters. The result is an optimized circuit of inductors (L)and capacitors
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LCL Filters
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LCL Type Harmonic Filter Modules are used to filter out the input current harmonics of the Motor Drives having six-pulse diode/thyristor rectifiers, where harmonic current distortion exceeds the limits defined in standards.
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Active Differential Probe
DF-600
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The DF-600 Differential Active Probe is a high input impedance and low input capacitance probe. It also supports extremely high frequency bandwidth, and high voltage input. It is designed using three OP amps, namely two FET buffer OP amps and a low offset OP amp. Therefore, even with long-term operations, the measured voltage will not drift. The voltage offset always approach 0 volts. (USB power supply should be 5V ±2%). The following diagram shows the circuit of DF-600.
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Capacitor for DC Filtering
FIL2
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Lifasa - International Capacitors, SA
FIL condensers are specially designed for use in direct current sources and their functions are to filter the alternating output ripple as well as protect the line from momentary spikes and sudden power surges.





























