Quantum Power Systems is the manufacturer of PFC AC-DC Converter with Battery Backup. Quantum Power Systems is an ISO 9001 certified company. The PFC AC-DC Converter with Battery Backup generates 390V DC from either mains AC or battery. It is suitable for first stage converter with battery backup. The PFC AC-DC Converter consists of AC input PF better than 0.99. The current harmonic distortion is less than 7%. The Output Power of PFC AC-DC Converter with Battery Backup ranges from 800W up to 2400W and has zero transfer time and hold up time > 20mS at full load. The PFC AC-DC Converter with Battery Backup is applicable in the areas of Vending Machines, EPABX, ATM, Medical Equipment and UPS.