Preen

Preen

Preen is a Taiwanese manufacturer of programmable power supply equipment, offering a broad range of DC power supplies and AC power sources designed for laboratory, production, and automated test environments. The company's ADG series programmable DC power supplies are widely used in electronics testing, component burn-in, and research applications, providing stable regulated output with remote control capabilities via digital interfaces.

Preen's product portfolio also includes AC power sources and frequency converters used for testing equipment under variable voltage and frequency conditions, supporting compliance testing to international standards such as IEC and MIL-STD. Their instruments are noted for high power density, flexible interface options, and compatibility with automated test systems.

Key Product Lines

• Programmable DC Power Supplies (ADG Series) — single-output DC supplies with remote control for automated testing, burn-in, and laboratory use
• AC Power Sources — programmable AC supplies for simulating international mains conditions and regulatory compliance testing
• Power Supply Accessories — supplementary components and integration accessories for power test setups

Industries Served

Preen power supplies serve electronics manufacturers, R&D laboratories, aerospace and defense contractors, and automotive test facilities. Their equipment is commonly used in electronics burn-in testing, EMC pre-compliance testing, avionics power testing, and production-line automated test equipment (ATE) systems where stable, programmable power is critical.