ASTRON~Power Supply 2-15V 37A 50 Amps Rack Mount Power Supply with Variable Voltage 12 to 15 Vdc with meters 5 1/4 x 19 x 12 1/2 50 lbs. Special Features Solid state electronically regulated Fold-back current limiting protects power supply from excessive current & continuous shorted output. Crowbar overvoltage protection Maintain regulation & low ripple at low line input voltage Heavy duty heat sink chassis mount fuse Three connector power cord One year warranty - made in usa Performance Specifications Input voltage 105 - 125 vac Output voltage 13.8 vdc ± 0.05 volts (internally adjustable: 11-15 vdc) Ripple less than 5mv peak to peak (full load and low line