Vitrek DL Series Electronic DC Load Instruments Generate Wide-Range kW, mW or µW Loads

January 15, 2020 Brandon Lewis

Vitrek has launched the DL Series of test instruments for measuring digital, programmable DC loads of off-line power supplies, DC-DC converters, LED drivers, and batteries. The systems are available in 125 W, 250 W, and 500 W power ratings and support input voltages of 0-150 V or 0-500 VDC.

DL Series the platforms can support any combination of single or arbitrary loading sequences of up to 100 steps using constant voltage (CV), constant resistance (CR), constant current (CC), constant power (CW). The systems can perform current or power sweeps up to 500 steps in each direction from set values (20 µs intervals), while a voltage-dependent current loading mode supports complex variable-output power supplies. In terms of timing, the systems provide pulsed loading of up to 100 kHz.

Additional features and loading modes include:

  • High-resolution touchscreen display
  • Battery test modes
  • Built-in scope (“scope mode”)
  • Graphical X/Y plotting
  • Historical data logging
  • Self-test function
  • Over-current protection (OCP), over-power protection (OPP), over-temperature protection (OTP), and over-voltage protection (OVP)

Vitrek claims the test systems are capable of generating high-current transient loads up to 20x higher than competitive solutions, and are also able to generate µA loads. The company also states that DL Series devices provide 2x the measurement accuracy of competing solutions at high loads, and offer an order of magnitude better precision at lower loading levels (± 0.05%).

DL Series test instruments are priced from $1,095 (125 W, 0-150 V). For more information, visit Vitrek at APEC 2020 Booth 2145 or download the DL Series datasheet.

About the Author

Brandon Lewis

Brandon Lewis, Editor-in-Chief of Embedded Computing Design, is responsible for guiding the property's content strategy, editorial direction, and engineering community engagement, which includes IoT Design, Automotive Embedded Systems, the Power Page, Industrial AI & Machine Learning, and other publications. As an experienced technical journalist, editor, and reporter with an aptitude for identifying key technologies, products, and market trends in the embedded technology sector, he enjoys covering topics that range from development kits and tools to cyber security and technology business models. Brandon received a BA in English Literature from Arizona State University, where he graduated cum laude. He can be reached by email at

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