INVERTERLESS CIRCUIT FOR AN UNINTERRUPTIBLE POWER SUPPLY

摘要

An inverterless uninterruptible power supply (100) includes a battery (150) and a clock circuit (110) that generates a first periodic signal having a first frequency. An ac supply detection circuit (120) generates a line control signal (122) that is un-asserted when the ac supply is not capable of supplying power above a predetermined threshold. A power transistor (144) is gated by the power control signal, and periodically transfers current from the battery to the load at the first frequency.