Elgar Power Supplies 501A Specs Output Voltage Ranges: 0-32, 0-130, 0-260 Output Frequency Range: 45-5,000 Hz. Output Power (VA): 500 Input: 115VAC, 47 - 63Hz Dimensions: 7“ H x 19” W x 17“ D Weight: 100 lbs. Manual: http://www.programmablepower.com/products/Discontinued/Downloads/251%20and%20501A%20Operation%20and%20Service%20104-1PH-26%20Rev%20Oct%201983.pdf
