Modular Electronic Loads

Modular electronic loads are scalable test instruments built on a mainframe-and-module architecture, allowing engineers to configure multi-channel load systems tailored to specific test requirements. Each load module slots into a shared chassis, enabling combinations of voltage, current, and power ratings to be assembled in a single rack. This approach provides flexibility for testing a wide range of power sources — from individual supply outputs to complex multi-output systems — without requiring separate standalone instruments for each channel.

Modular loads are widely used in production test environments where multiple device-under-test channels must be evaluated simultaneously. The shared mainframe provides centralized control, communication interfaces (GPIB, USB, LAN), and power distribution, reducing system complexity and rack footprint in high-density automated test environments.

Typical Applications

Multi-output power supply testing in electronics manufacturing
Automated test equipment (ATE) integration for production line testing
Battery management system (BMS) multi-cell testing
DC-DC converter and voltage regulator module (VRM) characterization
Multi-channel LED driver and lighting system testing

Popular Brands

Chroma is a leading manufacturer of modular electronic load systems, offering a wide range of modules for low-voltage, high-current, and high-power applications. Keysight and NH Research also produce modular load platforms for advanced automated test environments.