The TDC series dc power supply is a high-precision programmable dc power supply that integrates Constant Voltage (CV), Constant Current (CC), and Constant Power (CP) operating modes. It automatically switches according to load conditions, delivering stable and reliable DC output for a wide range of testing and power supply applications. Featuring a 4-digit LED display, the unit provides real-time monitoring of voltage, current, and power. With coarse and fine adjustment controls, it enables precise parameter setting and offers excellent performance with high accuracy, low ripple, low temperature drift, and fast response. Powered by a standard AC220V input (AC110V customizable), the TDC Series incorporates comprehensive protection and convenience features, including OVP (Over Voltage Protection), OCP (Over Current Protection), power-off memory, three preset memory groups (M1/M2/M3), key lock function, and intelligent forced-air cooling. An integrated RS232 communication interface supports remote control, automated testing, and data acquisition, making it ideal for industrial automation and system integration applications. Available in a wide range of voltage, current, and power ratings, the TDC Series is widely used in educational laboratories, R&D facilities, production testing, product aging tests, industrial control systems, renewable energy equipment, electronic maintenance, instrumentation development, and automated test systems. It provides a stable, safe, and precise DC power solution for electronic components, circuit boards, control modules, and other electronic devices.