Snubber circuit for use in an uninterruptible power supply

摘要

A circuit for eliminating current transients in a switching circuit of an uninterruptible power supply having a main source of AC signals and an inverter for supplying AC signals from a DC source including gating device operated in response to receiving signals representing the failure of the main source of AC signals and the occurrence of a current transient in the AC output of the inverter. Operation of the gating device enables high frequency clock signals to synchronously energize a MOSFET which applies the AC output signals over the inverter to a load dissipating the current transients. The circuit includes a transformer operated by the high frequency clock signals to switch the MOSFET at a high frequency enabling the current transients to be eliminated in a minimum amount of time.