Current Amplifiers
See Also: Amplifiers, RF Amplifiers, Preamplifiers, Audio Amplifiers, Voltage Amplifiers, Transconductance Amplifiers, Op Amps, Klystron, Instrumentation Amplifiers, Distribution Amplifiers
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Low Input Current
Low input current and transistor output photocouplers (optocouplers) are optically coupled isolators containing a GaAs infrared light emitting diode and an NPN silicon phototransistor. This type features a fast response while operating on a low input current.
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Clamp type AC Current Sensor／for Leakage Current Measurements(ZCT Series)
ZCT-30
MULTI MEASURING INSTRUMENTS Co., Ltd.
*Leakage current measurements of feeder*Compact size*AC 1mA～100A
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High Voltage Amplifier
HA-805
*800Vp-p(±400V DC) *200mAp-p(±100mA DC) *Bandwidth: ≦300KHz(400Vp-p) *Slew Rate: 300V/us *Gain(AMPL):0~180(10 Turn VR) *DC Offset: ≦0~±400V(10 Turn VR+SW) *Output Resistor: 100Ω *Microprocess Control Protection
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Programmable DC Current Source
Model 121
The Model 121 programmable DC current source is a precision instrument suitable for bench-top use or panel-mounted operation in labs, test facilities, and manufacturing environments. It provides a low-noise, highly stable source of current up to 100 mA, with convenient manual selection through 13 pre-set output levels, each representing a ten-fold change in power when attached to a resistive load. A “user” setting allows the current output to be defined anywhere within the operating range of the unit, from 100 nA to 100 mA.
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Split type Pulse Current Sensor
CTF-03
MULTI MEASURING INSTRUMENTS Co., Ltd.
Suitable for the operation and cable continuity check of the equipment by pulse current detection method. Wide AC current range from 0.1mA to 8A. Ultra compact and light weight. High sensitivity and least affection from external magnetic field.
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622 HP Eddy Current Chassis Dynamometer
CM-51-EC
Weight Capacity: 25,000 lb (11,340 kg) per axleRoll Brakes: pneumatically-actuated discShipping Weight: 8,340 lb (3,783 kg)Capacity: 622 hp at 45 mph (464 kW at 72 kph)Rolls: 20 by 36 in. (508 by 915 mm) long4 front fixed rolls, 2 rear rolls fixed toaccommodate axle spreads from48 to 60 in. (1,219 to 1,524 mm)tandem centersPit Required Depth: 25 in. (635 mm)
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PWM Amplifiers
SA Series
Covering a power range of 5 to 20 KVA, the MCS line of high frequency PWM servo amplifiers utilizes the latest in solid state power circuitry and power devices to provide the greatest amount of flexibility available in the brushless motor drive market. The SA Series is a stand alone system with integral power supply designed for industrial application where the system will mount inside a NEMA type enclosure.
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SAFETY TESTERS ( CURRENT LEAKAGE TESTERS )
ST-05
Safety Tester Model ST-05 is a test set for testing small equipment powered by 120V 60 Hz, from an approved U-ground source. Test also can be run on double-insulated tools an on appliances with two-pin parallel plugs.
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Thin Film Current Sensing Chip Resistors
CSTN
*Thin film process*High power rating up to 3 watts in 2512 size*Resistance values from 50m to 1ohm*High purity alumina substrate for high power dissipation*Power management applications*Switching power supply*Over current protection in audio applications*Voltage regulation module (VRM)*DC-DC converter, battery pack, charger, adaptor,*Automatic engine control*Disk drive
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EMI Amplifiers
Overvoltage protection,shuts off above 29VOver-temperature protection,shut off above +100°CExcellent IP3 Class A amplifierVSWR Short and Open circuit protection
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Precision Voltage and Current Sources
VI-700
The VI-700 Voltage and Current Source is a versatile precision dialable or remotely programmable voltage and current source. Its three ranges provide up to 20 V full scale (200 V with the HV option), and down to 100 mV resolution; and 20 mA full scale down to 0.1mA resolution. Both voltage and current outputs are available simultaneously. The output is set by a range selector and thumbwheel switches in the LOCAL mode, or by a digital input at the rear panel. The REMOTE mode control can be a RS232 or IEEE-488 interface.
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High-Voltage, High Current I/O Module
Model JI-4516
The JI-4516 module is a versatile, easy-to-use device for adding high-voltage, high-current digital I/O capability to a computer system via a USB connection. The module is comprised of 8, low-side power MOSFET switches, and 8 high-voltage inputs. I/O ground isolation eliminates ground-loops and provides protection from noise and switching transients during high-current load switching. The JI-4516 is available as either a desktop unit or low-cost OEM board.
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High Voltage Amplifier
HA-800
*800Vp-p(±400V DC) *70mAp-p(±35mA DC) *Bandwidth: ≦200KHz(400Vp-p) *Slew Rate: 200V/us *Gain(AMPL): 0~180(10 Turn VR) *DC Offset: ≦0~±400V (10 Turn VR + SW) *Output Resistor: 100*Ω
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Resistors for Calibration of Current Measuring Systems and Sensors/Transducers
ChenYang Technologies GmbH & Co. KG
Is designed and made according to the Standard JB/T8225-1999 for DC resistors used in laboratory and electrical engineering.By using full closed structure and automatictemperature control it ensures resistor good long-term stability and small temperaturecoefficient. This DC resistor is very suitablefor DC current measurement and calibration of current measuring systems and current sensors. The maximal measuring current is 100A with measuring accuracy of ±0.02%
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PXI Analog Output / Current Loop Simulators
These modules are aimed at simulating industrial control transceivers, utilizing 4–20mA current loops. The modules include built-in relays for shorts and opens functionality enabling fault insertion testing on every channel and also enable slew rates to be programmed so that different sensors can be effectively mimicked.
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True RMS Current Clamps
PeakTech Prüf- und Messtechnik GmbH
Current clamps are ideal for current measurement in electrical systems and control cabinets, since only single wires are guided through the clamp jaws for contact-free current measurement and no electrical connections have to be disconnected. In addition, this model has extensive multimeter functions for voltage, resistance, frequency, capacitance and temperature measurement.
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Zero Phase Current Transformer
MZL-65
MULTI MEASURING INSTRUMENTS Co., Ltd.
Split-core type for measuring zero phase current
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Portable 4-Quadrant Power Amplifier
PIV270
PONOVO POWER's PIV270 Power Amplifier is equipped with feature of high power, large current, high voltage, high precision, high speed etc. It can meet different application on power and precision requirements.
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Countermeasures Amplifier
CMA-100
CMA-100 Countermeasures Amplifier is a high gain audio amplifier used to detect and identify certain types of surveillance devices attached to building wiring such as telephone wiring, LAN and server systems, AC power, and alarm wire. The CMA-100 Countermeasures Amplifier functions employ a sophisticated automatic gain control circuit that is superior to most audio amplifiers.
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Current Transformer Tester
CT-T1
The CT-T1 is a microprocessor-based Current Transformer Tester that measures CT excitation current, turns ratio, and winding polarity tests, all without having to switch the leads during testing. The instrument has a fully automatic knee point detection (ASA 10/50, IEEE 30°, IEEE 45°). Although includes 5 low side taps and 1 high side tap.
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Voltage Amplifiers
Switchable gain up to 100 dB (x 100,000)Bandwidth DC to 100 kHzDC-drift 0.6 µV/°CInput noise down to 0.4 nV/√HzSwitchable AC/DC-couplingLocal and remote controlInput impedance up to 1 TΩ
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Fixed Aperture RF Current Monitoring Probe
TBCP1-200
The TBCP1-200 is a fixed aperture RF current monitoring probe.The probe has a 3dB bandwidth of approximately 200 MHz. The aperture of the RF current monitoring probe is 25 mm. Its transfer impedance is > 14 dB Ohm in the range from 40 kHz to 200 MHz.
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TriRaptor Three-phase High Current Injection
The TriRaptor is the only really portable three-phase injector in the market providing stabilized current in the range of 3000 A and beyond. It has been designed with the same ergonomics and performance characteristics found in the popular Raptor system, so it is really easy to use and can be transported by a single person in a regular vehicle.
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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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Precision High Current Resistors/Shunts
Measurements International Ltd.
The precision high current shunts are a series of High Current Resistors ranging from 1 A to 3000 A with optional air moving fans and resistance values from ohms to micro-ohm.
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Isolation Amplifier Analog Output
This coupler is an optically coupled isolation amplifier that uses an IC with a high-accuracy sigma-delta A/D converter and a GaAIAs light-emitting diode with high-speed response and high luminance efficiency on the input side, and an IC with a high-accuracy D/A converter on the output side. This coupler is designed specifically for high common mode transient immunity (CMTI) and high linearity (nonlinearity) applications, making it ideal for current sensing in motor drives.
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T3RC Rogowski Coil Current Probes
T3RC Series
Teledyne Test Tools Rogowski Current probes offer a broad range of products covering a wide frequency span and current measurement ranges for maximum application coverage whilst being easy to use in difficult to reach parts of the circuit.
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Gain Block Amplifiers
RF gain block amplifier from Pasternack is featured in our extensive in-stock RF amplifier selection. Our connectorized gain block RF amplifier uses SMA connectors. This SMA gain block amplifier has a minimum frequency of 10 MHz, a maximum frequency of 3 GHz and a typical gain of 20 dB.
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Primary Current Injection Testers
Primary Current Injection Tester is designed for testing protective relay and circuit breakers and also testing the turns ratio of current transformers at high variable currents. A test current is injected into the primary side of a system to determine how the system behaves at particular levels of current. This test makes it possible to determine whether the relay will trip and how long the current needs to flow before the trip is initiated.
