Patent ID: 6555935
Filing Date: 2003-04-29
Classification: H03K

Abstract:
An industrial control device comprising:a switching component deriving a threshold switching voltage from a power source and operative to be energized on and de-energized off to selectively provide electrical power from the power source to a load; a logic component that generates a first signal and a second signal independent of the first signal and operative to be non-complementary with respect to the first signal, further comprising a pulse generator that generates a low pulse of the second signal for a fixed duration causing the switching component to de-energized by actively removing voltage; a first optical component in electrical communication with the switching component and adapted to selectively energize the switching component in response to the first signal, the first optical component comprising a first opto-coupler, the first opto-coupler comprising a first transistor, the first optical component operative to electrically isolate the logic component; and a second optical component in electrical communication with the switching component and adapted to selectively de-energize the switching component in response to the second signal, the second optical component comprising a second opto-coupler, the second opto-coupler comprising a second transistor, the second optical component operative to electrically isolate the logic component.