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DC Measurements
Standard Windows sound cards do not respond to DC or frequencies lower than a few Hz. (See Why Sound Cards Block DC Signals below for explanation.)There are two general approaches to get true DC response from a standard sound card: Modify the card, or add an external circuit to convert the DC into an AC signal which can be easily measured by an unmodified card.
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DC Blocks
DC blocks are coaxial components that prevent the flow of audio and direct current (DC) frequencies while offering minimum interference to RF signals.
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LV Iron Core Shunt Reactors
Iron core Shunt Reactors act as an absorber of reactive power to increase energy efficiency of the power system. Shunt Reactors are used in order to compensate capacitive reactive power generated by long and lightly loaded transmission lines as well as underground cables, thus allowing the flow of more active power through the system and avoiding over voltages. Shunt Reactors can be directly connected to the power line or to a tertiary winding of a three-winding power or distribution transformer.
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725-Watt (270VDC input) DC/DC Converter, SOSA™ Aligned, 3U VPX
VPX57HS
NAI’s VPX57HS-31 is NAI's latest +270 VDC Input, VPX DC/DC Converter. The VPX57HS was developed in alignment of the SOSA™ Technical Standard and is capable of handling up to 725 Watts of output power. It plugs directly into a standard 3U VPX chassis with a VITA 62 1.0” power supply slot. This off-the-shelf solution for VITA 46.0 and VITA 65 systems is compatible with VPX specifications; supports all VITA standard I/O, signals, and features; and conforms to the VITA 62 mechanical and electrical requirements for modular power supplies.
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DC Alignment
SEP/SIP
There are analog phase control type DC power supply type and digital control type inverter energy saving type. We provide the most suitable equipment according to the current capacity and cycle time.If the "start command" is executed from the existing molding equipment, each mode of "alignment-pause-demagnetization" is continuously operated by the program inside the instrument. It is also possible to share an emergency stop signal and output an output current abnormality signal.
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Precision AC/DC Active Current Shunt
2575A
A versatile, powerful calibration tool, the 2575A Precision AC-DC Active Current Shunt measures both AC/DC current and works as a standard for low-level resistance calibration requirements.
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75-Watt DC/DC Converter; Single Output
55KS1
NAI’s 55KS1 is a 75-Watt DC/DC Converter that accepts a +28 VDC input. This COTS unit provides full-power, single output, at a baseplate temperature of +100° C.
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DC Blocks
BroadWave designs and manufactures DC Blocks and other coaxial RF components that are ideally suited for test, verification and system integration. With frequency ranges of DC to 18 GHz, our components offer consistent performance at a low cost with an emphasis on performance and configuration flexibility.
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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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Phase Meter Current Shunts
610 and 650
Clarke-Hess Communications Research
The Model 610 and 650 Current Shunts are specifically designed to operate with the Model 6000A Precision Phase Meter. These shunts are frequency tuned to have negligible phase shift (less than 5m) at 50/60Hz making them ideal for line frequency applications. They can also be idealized for other frequencies as specified by the user. Consult factory for details.
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DC Blocks
A coaxial RF DC block is from Pasternack and has an 50 Ohm impedance. Our 50 Ohm DC block is manufactured with a SMA input and SMA output. This SMA DC block is an inner direct current block type.
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High Power Shunt Resistors
CS227
The CS227 is a metal foil, SOT227 resistor designed to give a high current capability. The metal foil element is situated on an insulated heatsink composed of plated copper. This assembly is then mounted into a durable plastic housing and sealed with high temperature epoxy.
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DC Input Darlington
DC input/Darlington transistor output photocouplers (optocouplers) are optically coupled isolators containing a GaAs infrared light emitting diode and an NPN silicon Darlington connected phototransistor. This type can operate on a low-current DC input because of its Darlington configuration.
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Brushless DC Motors
CAES offers brushless DC motors in 2 or 3 phase and with optional commutation.
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DC Power Supply
62000H
Chroma Systems Solutions, Inc.
Chroma’s new 62000H Series of programmable DC Power Supplies offer many unique advantages for telecom, automated test system & integration, industrial, battery charge & simulation for hybrid cars and solar panel simulation. These advantages include a high power density of 15KW in 3U, precision readback of output current and voltage, output trigger signals, as well as the ability to create complex DC transients waveforms to test device behavior to spikes, drops, and other voltage deviations. For high power applications, parallel up to 10 units for up to 150kW.
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DC POWER
VARIABLE TRANSFORMER
Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with a Variable Transformer (also known as variac). The Variable Transformer can be adjusted manually or with a motorized control. The AC input power can be single phase or three phases. With single phase AC input, the DC output ripple is very high (50%). With three phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three phase AC input instead of single phase.
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DC Power Supply
We are counted amongst the leading names in the industry, offering wide range of DC Power Supply. We make DC Power supply up to 100A for the Lab & also Industrial Purpose. Our entire product range ensures consistent performance and ensures smooth performance. We deliver them in standard configurations and are delivered in varied strength capacities.
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DC Hysteresis Graph
DX-2012SD
Automatic measurement on basic magnetization curve and magnetic hysteresis loop under static state of soft magnetic material, accurate measurement on static magnetic characteristic parameters such as initial permeability µi, maximum permeability µm, saturation magnetic induction Bs, remanence Br, coercive Hc and hysteresis losses Pu.
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DC Power Supplies
SFA Series
AMETEK Programmable Power, Inc.
The SFA family builds on the industry leading Sorensen SGA series to provide a high power current source for laser diode applications. State of the art high power laser diodes require well-regulated current control to avoid catastrophic damage. Under anomalous operating conditions, excessive stored energy in the output circuit of the power supply can result in peak stresses that can permanently damage the device. Providing a constant current regulation mode only, the SFA’s low stored energy output minimizes damage potential for sensitive devices as well as enabling a current slew rate of up to 400 A/msec.
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DC Loads
Becker Nachrichtentechnik GmbH
Becker Nachrichtentechnik offers wideband multichannel DC decouplers for antenna diagnostic applications. Due its high bandwidth the device is suitable for all broadcast, cellular and Wi-Fi standards.
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DC Bench Power
XDL Series
AMETEK Programmable Power, Inc.
The Sorensen XDL series II represents the "next generation" of high performance laboratory power supplies. The XDL provides multiple ranges for increased current capability at lower voltages and uses pure linear technology. Unlike other digitally controlled units, the XDL series II provides both numeric and rotary control while the illuminated keys and display legends provide instant confirmation of settings and status.
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DC Power Supply
PW-4032
*High Resolution Read out: 10mV/1mA *10 Turn VR for Voltage and Current Setting *Dual output: 0~30V/0~3A;5V Fixed/0~3A *4 Digits, 2 Display
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500-Watt (270VDC Input) DC/DC Converter, 3U VPX
VPX57-31
NAI’s VPX57-31 is the industry's first 500-Watt DC/DC Converter that accepts a +270 VDC Input and plugs directly into a standard 3U VPX chassis with a VITA 62 1.0” power supply slot. This off-the-shelf solution for VITA 46.0 and VITA 65 systems is compatible with VPX specifications; supports all VITA standard I/O, signals, and features; and conforms to the VITA 62 mechanical and electrical requirements for modular power supplies.
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Impulse Current Measuring Shunts
ICMS
The Impulse Current Measuring Shunts ICMS are new designed tubular shunt types with best response behavior to match the high performance of the TR-AS digital recorder for comparative current measurements. A 1st partial response time less than 10ns and a settling times less than 20ns show the advantage of these shunts. They show no initial overshoot peak, no oscillations and do not need compensation box to optimize the transient behavior as known from e.g. cage shunts.
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Dc Watt Meter For DC Current Measuring
IM1401
Our product range includes a wide range of dc watt meter for dc current measuring.
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DC Power Supplies
ASD FLX Series
AMETEK Programmable Power, Inc.
The ASD FLX gets its name from its modular design with front loading modules for easy access and flexible voltage options. The chassis with removable, lightweight modules allows for easy one person installation. Furthermore, this product has a wide range of voltage input, 324 VAC to 528 VAC, giving it the flexibility to be utilized globally in a single configuration.
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Current Transformers And Shunts
Current transformers allow the different measuring devices to provide reliable and traceable data on the trends involving consumption and production processes in electrical installations. Especially designed to be installed quickly, easily and securely, meeting the most demanding expectations of today's market, covering a wide range of primary currents as well as multiple secondary outputs, both for AC and DC measurement.
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DC Electronic Load
EE30140A
The EE30140A DC Electronic Load / Works @ 0.0 Volts Input & real time I/O control. attach the electronic load block to a heat- sink and your up and running used them with D to A's, A to D's, Pots, PLC's to control the current. These Electronic Loads can be used for both Discharge & Charging Batteries & Devices
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AC Current Shunts
CSA Series
Ohm-Labs’ CSA series of ac current shunts are designed as laboratory standards for ac current measurement up to high frequencies.
