Instek PSH-2050A 20V/50A DC Power Supply with GPIB

FEATURES:
Wide Input Range and High Power Factor (P.F)
High Efficiency and High Power Density
Constant Voltage and Constant Current Operation
Over-Voltage, Over-Current and Over-Heat Protection
Low Ripple and Noise
Standard: RS-232; Option: IEEE-488.2
Output ON / OFF Control
Self-Test and Software Calibration
LCD Display
Built-in Buzzer alarm