Patent ID: 6870721
Filing Date: 2005-03-22
Classification: H02H

Abstract:
1. An apparatus for power source protection with automatic latch-off, for use in an electronic apparatus, the electronic apparatus including a power supply and an electronic switching device coupled to the power supply, wherein the electronic switching device has a power source terminal, and the electronic apparatus is powered through the power source terminal, the apparatus for power source protection with automatic latch-off comprising: a low-voltage-triggered latch-off device, coupled to the electronic switching device, for turning off the electronic switching device when the power source terminal is short-circuited; and a low-voltage-triggered responding device, coupled to the power source terminal and the low-voltage-triggered latch-off device, wherein the low-voltage-triggered responding device enables the low-voltage-triggered latch-off device to turn off the electronic switching device when the power source terminal is short-circuited.