0-500 V Stabilized Dc Power Supply 50 Ma. This unit is ideally suited for experiments requiring high voltages up to 500 V, such as electron beam tubes. The high voltage output is limited to 50 mA. The two DC outputs have display to monitor the voltage. separate AC output is available for filament heaters. All outputs feature thermal cut-off protection. Weight: 4.55 kg. Dimensions (L D H): 297 225 118mm. DC Output:• -50-0-500 continuously variable• 50 mA max.• Ripple <0.1 %AC Output:• 2- V in V steps• A max.