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  5. Electronic Loads

Electronic Loads

Electronic loads draw current from devices under test (DUTs) to simulate the real-world performance of batteries, power supplies, fuel cells, solar panels, and other electronics. These programmable test instruments operate in modes such as constant current, constant voltage, constant resistance, and constant power to meet a variety of testing needs.

View Electronic Loads
NI PXIe-4051

What Electronic Load Is Right for You?

Stand-alone PXIe electronic load module, shown at an angle with a gray front panel and multi‑pin front‑panel connectors.

High-Performance Electronic Loads

These instruments deliver the highest power available in the PXI form factor, combining best‑in‑class measurement performance and speed. They are ideal for engineers running complex tests who need to maximize measurement accuracy or test throughput.


Features:

  • Up to 300 W
  • Max voltage 60 V and resolution of up to 1 μV
  • Max current 25 A and resolution up to 10 nA
  • Customize transient responses
  • Measure voltage and current up to 1.8 MS/s
  • Compact PXI form factor
Explore high-performance electronic loads

Shop by Form Factor

PXI System Components

An NI Partner is a business entity independent from NI and has no agency or joint-venture relationship and does not form part of any business associations with NI. 

RMX‑4006 single‑channel electronic load device with front‑panel screen, rotary control, and multiple input connectors, shown on a white background.

Rack-Mount Electronic Loads

Rack-mount electronic loads provide high power for validation labs and production test environments. Their stand-alone, high-capacity design is well suited for testing higher power applications where modular density is less critical.


Features:

  • Up to 1,500 W
  • Output up to 650 V or 150 A
  • Rack-mount form factor
Explore rack-mount electronic loads
PXI
Rack Mount

Explore Related Categories

Power Supplies
Source Measure Units
Switches
PXI Chassis
PXI Controller

Featured Product

Stand-alone PXIe electronic load module, shown at an angle with a grey front panel and multi‑pin front‑panel connectors.

PXI Electronic Load Module

The PXI Electronic Load Module provides a programmable load capable of sinking DC power for characterization, design validation, and manufacturing test.


  • 1-Channel
  • 60 V
  • 40 A
Learn more about PXI Electronic Load Module
Image of PXIe-1088 in a lab

Break Through Your Next Engineering Challenge with PXI

As electronics grow more complex and testing deadlines tighten, traditional instruments only slow you down. Flexible, scalable, and software-driven NI PXI systems can help you break free from rigid, stand-alone boxes that limit your ability to scale, synchronize, and adapt.
Download ebook

Electronic Load Fundamentals

Key Concepts

Modes of Operation, Remote Sense, Ripple, and Noise
Line and Load Regulation and Cascading Considerations
5 Best Practices for Maximizing DC Measurement Performance

Benefits of Choosing PXI

Overview of PXI
NI PXI Timing and Synchronization Design Advantages

NI Software for Electronic Loads

Selecting Electronic Load Software


The software you use with your NI Electronic Load device varies based on the product you choose.


PXI Electronic Loads are supported in NI InstrumentStudio™ software with ready-to-run instrument panels to control and monitor multiple PXI instruments in a single environment. They also are supported by the NI-DCPower driver which simplifies setup and programming for NI LabVIEW, Python, C/C++, C#, and more.


Rack-mount power supplies include drivers based on their model name and can be programmed with LabVIEW, C, with some RMX devices additionally supporting SCPI commands.

NI InstrumentStudio™ Software

NI InstrumentStudio provides an integrated approach to interactive PXI measurements.

NI LabVIEW

NI LabVIEW is a graphical programming environment that provides unique productivity accelerators for test system development, such as an intuitive approach to programming, connectivity to any instrument, and fully integrated user interfaces.


Electronic Load Resources

Driver icon

Download NI-DCPower

Download the driver for the PXI Electronic Load Module
Driver icon

Download RMX Electronic Load Drivers

Download the drivers for RMX 400x devices
InstrumentStudio icon

Download InstrumentStudio for free

Download software for PXI measurements

Using NI-DCPower

NI-DCPower .NET Resources
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Get Help from an NI Partner

The NI Partner Program offers domain, application, and overall test development expertise to help your team get ahead and stay ahead. Connect with our global community of trusted NI Partners ready to give your business a competitive edge.
Find a partner

Frequently Asked Questions About Electronic Load Modules

  • An electronic load draws current from a device under test (DUT) to simulate real-world use. They are commonly used for endurance testing, charge/discharge cycling, and fault analysis in batteries, fuel cells, and other electronic components. 

  • Modular electronic loads are programmable devices that plug into slots on a PXI chassis and can be used alongside multiple instruments for purposes like high-power or multichannel testing.  

  • NI Electronic Loads operate in constant current (CC), constant voltage (CV), constant resistance (CR), and constant power (CP) modes. Many electronic loads also support dynamic or transient modes, which switch between load levels to evaluate a power source’s response to changing condition. 

  • RMX electronic loads are stand-alone benchtop or rack-mounted instruments, typically used in production testing and power supply verification. PXI electronic loads are modular cards that plug into a PXI or PXI Express chassis, allowing tight integration with other PXI instruments.

  • NI programmable electronic loads are ideal for high-speed and high-channel density applications. They can be configured and scaled as needed to adapt to test requirements and offer precise measurement capabilities, synchronization and timing, customizable ranges, and easy integration with NI software.

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Download a free trial of LabVIEW

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Python Resources for NI Hardware and Software
NI-DCPower User Manual