... 5,7.5,10,12,15,18,24,27,48V Switching Power Supply 120W Features:AC input range selectable by ... loadCooling by free air convection100% full load burn-in testFixed switching frequency at 25KHzLow costHigh reliabilitySPECIFICATION:MODELS-120-5S-120-7 ... 20ms at full loadINPUTVOLTAGE RANGE85 ~ 132VAC/180 ~ 264VAC selected by switch 255 ~ 370VDCFREQUENCY RANGE47 ~ 63HzEFFICIENCY (Typ.)78%80%80%81%81 ...