Transistor Devices

Transistor Devices

Transistor Devices, Inc. (TDI) is a US-based manufacturer of programmable electronic loads and DC power supplies for test and measurement, power electronics development, and automated test system integration. The company specializes in high-power DC electronic loads used for testing batteries, fuel cells, DC-DC converters, inverters, and power supply units under controlled, repeatable load conditions. TDI products are employed in both R&D and production test environments where precise, programmable load control and accurate measurement are essential.

TDI electronic loads are available in dissipative configurations capable of absorbing significant continuous power levels while operating in constant current, constant voltage, and constant resistance modes. Their systems support standard communication interfaces including GPIB, RS-232, and Ethernet for integration with automated test equipment and data acquisition systems.

Key Product Lines

• High-power DC electronic loads for battery, fuel cell, UPS, and power supply testing
• Programmable DC power supplies for laboratory bench testing and automated test system applications
• Multi-channel and rackmount load systems for parallel and high-current test configurations

Industries Served

Transistor Devices equipment is used in aerospace and defense, automotive and electric vehicle development, power electronics R&D, telecommunications, and electronics manufacturing where high-power load testing and power supply validation are essential quality assurance steps.