Bias Current
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DC Bias Current Source
TH1778A
Changzhou Tonghui Electronic Co., Ltd.
The instrument adopts a new generation AC/DC superposition test theory to adapt test requirements for high precision and high frequency. The built-in embedded MCU with high-performance can quickly respond to host and slave machine condition or malfunction and make real time indication, which helps improve the work efficiency. The new designed friendly graphical operation interface, included 5-foot control modes and full touch operation provides convenience and efficiency for users. New file management system with easy, prompt and accurate operation can save a group of real-time setting file and 99 groups of user defined setting files. It can provide pushed information indication and cache 2 real-time information. Being provided with two modes of SCPI instruction systems, it is convenient to set up production lines or single machine test. Also, it can connect with any device with serial port and which refer to the SCPI instruction system design of this machine.
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DC Bias Current Source
DU2020/2030/2040
Delta United Instrument Co., Ltd.
Frequency: 10KHz - 200KHz Veracity:3% + 3 digitsTiming: 0.1 - 999 H, settable 3 1/2 bits LCD Display
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DC Bias Current Source
FD1772B
• Constant DC output 0-6A• Auto or manual current sweep output• 5 current range output• Output voltage range: 0-11.5V• Current accuracy ± (1%reading + 2digit)
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DC Bias Current Power Supply
TH1775
Shenzhen Chuangxin Instruments Co., Ltd.
TH1775 is a DC Bias Current Source (or DC Magnetization Current Source) used for inductance measurement of inductors and transformer windings with DC bias current. Except for constant current output, low additional error and wide frequency response range are important for bias current inductance measurement. High frequency LCR meter could be used, when the frequency response range is wide enough. MPU controlled auto current balance technology is adopted to realize AC+DC current overlap and constant current output from 0 to ±20A. Two TH1775 can be paralleled to supply a maximum current up to 40A.TH1775 permits high frequency measurement up to 1 MHz and can be directly controlled by TH2816A, TH2817A, TH2818 and TH2819. TH1773/TH1775 with its low additional error, wide frequency response range and sweep output function is widely used in DC biased inductance measurement. TH1775 also provides a perfect solution for magnetic material analysis.
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Low Input Bias Current Amplifiers (<100 pA)
Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.
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Shunt Voltage References
Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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Cost-Effective ATE System
PRO RACK ATE
Qmax Test Technologies Pvt. Ltd.
Pro-Rack is a cost effective ATE System, which comes with Modular Structure provision option to improvise and enhance much instrumentation based on the user’s requirements. Basically it is designed to cater to the needs of PCB test and repair depots, keeping in mind the changing PCB technology and the challenges in testing them off-line. It can provide complete PCB test and diagnostic functions for any kind of PCB including the latest very high density complex PCBs with high pin count PQFP, FPGA VLSI chips. AC /DC parametric tests enables testing of the DC parametric of device pins on the edge connector for input bias current, Fan out capacity ,Tri-state leakage currents, AC parametric measurements such as Input / Output Propagation delay Rise time / Fall time to further enhance fault coverage. Pro-Rack is designed with VPC Mass Interconnect adapter with 16 bit fixture ID interface to the UUT through simple clips and probes or through card edge or through a bed of nail test fixture.
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K-Band Waveguide Gunn Oscillator Module
FMWGN1001
FMWGN1001 is a K Band Waveguide Gunn Oscillator with a Center Frequency of 24.125 GHz and a Tuning Range of +/- 1.0 GHz. The unit has a Phase Noise @ 100kHz Offset of -95 dBc/Hz typ and Frequency Stability of -0.4 MHz/°C max. The Gun Oscillator has an Output Power of 10 dBm min and Power Stability of -0.04 dB/°C max. The Waveguide Gun Oscillator uses a Bias Voltage of 5.0 Volts and a Bias Current of 200 mA and has a Waveguide Size of WR-42 with a UG-595/U Flange.
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SQUID Electronics
XXF-1
It is designed to satisfy the needs of nearly all low-Tc SQUID applications. Additional integrated current sources provide e.g. bias current and calibration pulses for TES applications. These current sources together with an additional switchable feedback path make two-stage SQUID operation very convenient.
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Automatic Component Analyzer
TH2829A
Changzhou Tonghui Electronic Co., Ltd.
By dint of leading impedance measurement technology and rich R&D experience, Tonghui continuously introduces representative impedance measurement product --- TH2829 series automatic component analyzer is another excellent product we have produced. TH2829A automatic component analyzer possesses a higher test speed, a more comprehensive analysis function and friendly human-computer interactive experience by adopting the latest high-speed processor and a new software system. Well-designed measuring circuit and optimized algorithms further enhance the test stability of low-D capacitance and high-Q inductors. The instrument is provided with 10V AC test level, 10V/100mA bias current and standalone 10V/50mA DC current, making it convenient for applying in the test of all kinds of active/ passive devices. Main/ sub parameters display, enhanced display system design, 150-points list sweep and graphical analysis capabilities of multiple parameters meet the most application requirements of customers.
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Passive Component ATS
Test and packing speeds from 80ppm to1,800ppmStandard functions - Inductance/quality factor test - Winding resistance test - Polarity testOptional functions - Layer short test - Insulation resistance test - Bias current testCircular vibrating plate design feeds inductors steadily and rapidlyIndex disc design eliminates dropped inductorsFour-wire measurement test socket designAutomatic discharge mechanism when feeding errors occurEach test station has an independent NG (No Good) product collection boxTest without packaging function provided, good products gathered in bulk collection boxExclusive data collection software designed for monitoring product quality in real timeReserved stations for number spraying and automatic optical inspectionSwitchable Chinese/English/Japanese operating interfaceEquipment is fast, stable and safe
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Low Input Bias Current Op Amps (≤100 pA)
Low input bias current op amps are required whenever the difference of currents or voltage is small and needs to be measured accurately. These op amps are used so that the signal is not loaded down by the input of the op amps. Low input bias current op amps are critical for interfacing sensors in applications from photodiodes, pH meters, or other electrometer related functions to downstream electronics. Analog Devices has many precision op amps that fit the definition and range of these applications.
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Versatile quality control testing system
QuickSun® 550Ei
QuickSun 550Ei is a versatile testing system for qualifying of PV modules with dimensions up to 105 x 205 cm2. Basic set up includes a top class solar simulator which measures modules in sunny side up position enabling e.g. soiling simulations. Several additional measurement methods can be integrated to the same system including high resolution EL imaging with analysis software from one of the most recognized EL system suppliers. Also hot spot revealing IR images can be recorded by applying either forward or reverse bias current, and true nA scale leakage current measurements can be performed with sensitive enough instruments.
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Bias T's
Centric RF offers Coaxial Bias T's so that a DC voltage can be applied to the rf signal path. These Bias Tee's (aka bias t) currently are offered with sma and 2.92mm connectors. Bias T's are implemented by attaching a broadband inductor to the circuit trace, with the power rating of the bias tee being determined by the size of the inductor.
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DC Bias Current Source
TH1778AS
Changzhou Tonghui Electronic Co., Ltd.
■ Test Frequency: 0Hz - 2MHz ■ Provide 0~20A of constant current output, and must be controlled by TH1778A ■ Support 6 machines on line at most and
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24-Bit High-Resolution Dynamic Signal Acquisition and Generation Module
PCI-9527L
The PCI-9527L is a high-performance, 2-CH analog input and 2-CH analog output dynamic signal acquisition board. This board is specifically designed for audio testing, acoustic measurement, and vibration analysis applications.The ADLINK PCI-9527L features two 24-bit simultaneous sampling analog input channels. The 24-bit sigma-delta ADC provides a sampling rate up to 216 KS/s at high resolutions, making it ideal for higher bandwidth dynamic signal measurements. The sampling rate can be adjusted by setting the onboard DDS clock source to an appropriate frequency. All channels are sampled simultaneously and accept an input range from ±40 V to ±0.316 V. The PCI-9527L analog input supports software selectable AC or DC coupling and 4 mA bias current for integrated electronic piezoelectric (IEPE) sensors.
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8-CH 24-Bit High-Resolution Dynamic Signal Acquisition Module
PCIe-9529
The ADLINK PCIe/PXIe-9529 is a high-performance, high density, 8-CH analog input dynamic signal acquisition module. The PCIe/PXIe-9529 features eight 24-bit simultaneously sampling analog input channels. The 24-bit sigma-delta ADC provides a sampling rate of 192 kS/s at high resolution, making it ideal for higher dynamic range signal measurement. All channels are sampled simultaneously and accept input range up to ±10V, and the analog inputs support software-selectable AC or DC coupling and 4 mA bias current for integrated electronic piezoelectric (IEPE) sensors. The module is especially designed to meet the requirements of vibration analysis and audio testing.
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RF Amplifiers Bias Controllers
RF amplifier bias controllers generate a regulated drain voltage and actively adjusts the gate voltage of an external amplifier to achieve constant bias current. It can be used to bias any enhancement and depletion type amplifier operating in Class-A regime with drain voltages (VDRAIN) as specified. These devices achieve excellent bias stability over supply, temperature and process variations, and eliminates the required calibration procedures used to prevent RF performance degradation due to such variations.
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Operational Amplifier
Op Amp Series
The amplifier is capable of operating at supply voltages from 0.9V to 3V with specified specs at 1V and 1.8V single supply.The input common mode range extends to both power supply rails without the offset glitch and input bias current phase reversal inherent to most rail to rail input amplifiers.
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DC BIAS CURRENT UNIT
3265B SERIES
To evaluate components at currents up to 125 A the 3265B DC Bias Units are used with either the Wayne Kerr 3255B series of Inductance Analyzers or the 3260B Precision Magnetics Analyzer. When one 3265B/25A or 3265BQ/25A DC Bias Unit is connected to an instrument up to 25 A of DC bias current can be set in steps of 25 mA with one unit. Additional DC Bias Units can be added such that with five units connected in parallel it is possible to set DC bias currents up to a maximum of 125 A DC.
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High Output Current Op Amplifiers ≥ 100mA
Analog Devices high speed , high output current (≥100 mA) op amps deliver high output current while driving low impedance loads with excellent linearity. Whether it's high output current, low input bias current, wide bandwidth, high slew rate, or low distortion, no one sets more performance standards for next-generation designs with the widest portfolio of leading edge products than Analog Devices.
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PRECISION MAGNETICS ANALYZER
3260B SERIES
At the design stage of component development it is vitally important to understand how the component performs under different operating conditions. This might include operation at diverse frequencies, AC drive levels or DC bias currents.
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HIGH FREQUENCY DC BIAS
6565 SERIES
The 6565 HF DC Bias Unit is intended to be used with a Wayne Kerr 6500 analyzer, either the 6500B Precision Impedance Analyzer or the 6500P HF LCR Meter. Its function is to provide a source of DC bias current through the Device Under Test (DUT) while the analyzer is making AC measurements. Each 6565 unit can provide up to 10 A of DC current, and up to six 6565 units can be connected in parallel to supply a maximum 60 A. A digital ammeter on the front panel allows the user to see the dc bias current value and an indicator LED shows when the bias current is enabled.
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50Hz-100kHz LCR Meter
11022/11025
Chroma Systems Solutions, Inc.
0.1% basic accuracyTransformer test parameters (11025), Turns Ratio, DCR, Mutual Inductance0Hz, 60Hz, 100Hz, 120Hz, 1kHz, 10kHz, 20kHz, 40kHz, 50kHz, 100kHz test frequencies21ms measurement time (≥100Hz)Agilent 4263B LCR Meter commands compatible4 different output resistance modes selectable for non-linear inductor and capacitor measuringHigh resolution in low impedance(0.01mΩ) and high accuracy 0.3% till 100mΩ rangeAdjustable DC bias current up to 200mA (constant 25Ω) (11025)1320 Bias Current Source directly control capability0.01mΩ ~ 99.99MΩ wide measurement range (4 1/2 digits)Dual frequency function (11022 option) for automatic productionBIAS comparator functionComparator function and 8/99 bin-sorting functionPass/fail judge result for automatic productionHandler interface trigger edge (rising/falling) programmableTest signal level monitor functionStandard RS-232, GPIB, and Handler I/FOpen/short zeroing, load correctionLabView® Driver
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DC Bias Current Source
TH1778B
Changzhou Tonghui Electronic Co., Ltd.
■ Test Frequency: 0Hz - 2MHz ■ Provide 0~20A of constant current output ■ No support of output extension
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External DC Bias Adapter
16200B
The 16200B test fixture is designed to operate with high frequency LCR meters and impedance analyzers. It allows you to supply a bias current across the device of up to 5 Adc through a 7 mm port by using an external DC current source.
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Operational Amplifiers
Operational amplifiers from ams are ideally suited to audio applications. These CMOS devices are available as single, quad or differential amps. They feature good common-mode rejection, have low input bias currents, good gain bandwidth, low total harmonic distortion and an excellent rail-to-rail output-drive capability of 200mA peak.
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8-CH 24-Bit High-Resolution Dynamic Signal Acquisition Module
PXIe-9529
The ADLINK PXIe-9529 is a high-performance, high density, 8-CH analog input dynamic signal acquisition module. The PXIe-9529 features eight 24-bit simultaneously sampling analog input channels. The 24-bit sigma-delta ADC provides a sampling rate of 192 kS/s at high resolution, making it ideal for higher dynamic range signal measurement. All channels are sampled simultaneously and accept input range up to ??10V, and the analog inputs support software-selectable AC or DC coupling and 4 mA bias current for integrated electronic piezoelectric (IEPE) sensors. The module is especially designed to meet the requirements of vibration analysis and audio testing.
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NI-9207, 500 S/s, 16-Channel C Series Voltage and Current Input Module
781068-01
500 S/s, 16-Channel C Series Voltage and Current Input Module - The NI‑9207 is a combination voltage and current input module designed with industrial systems in mind. It features eight current and eight voltage input channels, with built-in noise rejection.
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AC / DC Current Probe, 100 KHz, 100 A
1146B
The Keysight 1146B AC / DC probe provides accurate display and measurement of currents up to 100 A DC or peak AC / DC to 100 kHz without breaking the circuit. The 1146B AC / DC probe has hall-effect sensor technology to measure AC and DC signals. It is compatible with any Keysight oscilloscope with 0.2 to 0.5 V / div sensitivity and 1 MΩ BNC input.
