AC-DC Switching regulator uninterruptible power supply

摘要: A power supply for a load such as computer, which is sensitive to interruptions. switching regulator coupled both the AC line and rechargeable battery, makes automatic transitions between operation battery operation, utilizing transistor switch an energy storage transformer sources load. The driven by variable duty cycle control signal provided programmed current feedback circuit responsive output voltage instantaneous current. cuts off each time peak through reaches value corresponding desired voltage--thus improving loop stability maintaining constant substantially eliminate ripple. enables one terminal of be connected transistor, minimize noise. charging recharges whenever operating within normal limits.