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Benchtop DC Electronic Loads
Precision power testing in a workbench electronic load
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Mainframe Modular DC Electronic Loads
Modular, scalable for high-performance automated testing
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ATE DC Electronic Loads
Regenerative capability with high-density efficiency
Benchtop DC Electronic Loads
Keysight NL1-class benchtop DC electronic loads include the EL30000 Series Bench Electronic Loads. They are designed for fast, accurate, and reliable testing of power devices. With a compact design and intuitive display, they offer precise control of voltage, current, and power to simulate real-world conditions. Built-in features, multiple test modes, and an oscilloscope-like view — plus high-accuracy measurements (±0.04%) — enable detailed analysis of device performance. Select the right model based on power, current, voltage, and input channels to test power supplies, batteries, LED drivers, and other components.
Modular DC Electronic Loads
Keysight modular electronic loads offer a flexible, scalable solution for testing a broad range of DC power sources — including power supplies, batteries, converters, and fuel cells. Featuring a single mainframe that supports up to six configurable load modules, they deliver the precise voltage, current, and power levels needed for multichannel or high-power testing. Supporting multiple operating modes — constant current, voltage, resistance, and power — along with fast transient response and integrated measurement capabilities, these loads are ideal in bench and automated test environments.
ATE DC Electronic Loads
Keysight NL3-class ATE DC electronic loads include the EL4900 Series Regenerative Electronic Loads. They host a regenerative capability that efficiently returns up to 95% of the absorbed energy back to the grid. This feature provides operational advantages by reducing energy consumption and cooling costs. The series offers a wide power range, from 2 kW to 12 kW, in high-density 1U and 2U layouts, with the flexibility to easily parallel up to 16 units (up to 192 kW) to create a single electronic load system. The electronic loads include advanced features for precise testing, such as simultaneous digitized voltage and current measurements. These combined benefits enable power test engineers to reliably evaluate and accelerate test development across multiple environments, accelerating testing of batteries and other power devices under test (DUT), such as automotive electronics and avionics.
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Frequently asked questions
An electronic load is a test instrument designed to sink current and absorb power from a power source. Power supplies and electronic loads are complementary test equipment. The power supply tests electronic circuits under specific sourcing conditions. The electronic load tests energy sources or energy conversion blocks with static or dynamic loading.
Device manufacturers and design engineers use electronic loads to test power devices such as power supplies, DC-DC converters, chargers, adapters, batteries, solar panels, and fuel cells.
Electronic loads offer several key advantages over traditional resistors, making them essential tools for a wide range of testing applications. While resistors can be suitable for simple and static load applications, electronic loads provide a much more versatile, accurate, and safe solution for a broader spectrum of testing requirements, especially those involving dynamic loads, precise control, and automated testing.
Electronic loads incorporate accurate measurement technologies, allowing you to monitor the voltage and current of the power source under test, providing valuable data for analysis and characterization. Electronic loads can operate in various modes like constant current (CC), constant voltage (CV), constant power (CP), and constant resistance (CR). This allows you to simulate different load conditions and test power sources under diverse scenarios. Resistors, on the other hand, offer only a fixed resistance value. Electronic loads typically include built-in safety protection mechanisms to prevent damage to the load or the power source in case of overcurrent, overvoltage, or overtemperature conditions. Overall, electronic loads provide a much more accurate, flexible, and safe test evaluation compared to resistors.
Choosing the right DC electronic load is crucial for accurate and efficient testing. By carefully considering these factors, you can select the right DC electronic load that meets your specific testing requirements and ensures accurate, efficient, and safe operation.
- Maximum voltage, current, and power ratings: ensure the electronic load exceeds the source's voltage, current, and power ratings with a safety margin for fluctuations.
- Operating modes: options like constant current (CC), constant voltage (CV), constant resistance (CR), constant power (CP), and dynamic modes are important to consider.
- Measurement accuracy and resolution: higher accuracy and precision are crucial for precise characterization and analysis.
- Features and functionality: consider capabilities like programmability, remote control, protection features, and data logging.
- Manufacturer and support: choose a reputable manufacturer with a proven track record of quality and reliability.
The field of DC electronic loads is constantly evolving, with manufacturers pushing the boundaries of performance, functionality, and ease of use. Here are some of the latest advancements:
- Increased power density and compact designs: manufacturers are developing electronic loads with higher power ratings in smaller and more compact form factors. This allows for more efficient use of space in testing setups and easier integration into automated test systems.
- Enhanced accuracy and measurement capabilities: advancements in circuit design and component technology have led to electronic loads with higher accuracy and advanced measurement features, such as high-resolution measurements, data logging capabilities, and real-time waveform analysis.
- Smarter control and user interfaces: manufacturers are focusing on developing more intuitive and user-friendly interfaces, often with touch screen displays and more powerful software capabilities.