Schaefer Inc. (Ashland, MA) has introduced the C4700 Series of 2500W, 6U high, VMW/Eurorack compatible dc/dc and ac/dc converters. This series is available in nine standard dc input voltage ranges from 10-900Vdc, as well as ac input voltage ranges of 185-264Vac and 93-136/185-264Vac. Three ac input voltages of 3 x 400Vac (320-460) and 3 x 480Vac (400-530) plus units can be supplied with an external PFC module. Single outputs are available in 12 ranges from 4.5-400Vdc. All outputs are adjustable and fully regulated to 0.2 percent or better (load) and 0.1 percent (line).All units in the C4700 Series have remote sensing, over-voltage protection, and current-limit protection on the output. Efficiencies run up to 90 percent. Operating temperatures available include -20 degrees C to +75 degrees C and -40 degrees C to +75 degrees C.The units are packaged in a 6U x 28TE x 300mm Eurorack module for space savings and incorporate DIN 41612 H15 I/O connectors. Options available include decoupling diodes for parallel operation, ruggedization, power fail/dc-ok, system reset, active current sharing, and wall mounting.Applications include locomotive controls and communications equipment, telecommunications systems, process control systems and power stations. Mechanical and electrical modifications to standard modules are readily available upon request. In addition, Schaefer can design and manufacture fully custom solutions. Series pricing from $1854 each in quantities of 100. Significant OEM quantity discounts are available. Delivery is 5-8 weeks ARO.