Patent ID: 6331798
Filing Date: 2001-12-18
Classification: H03K

Abstract:
A control arrangement for a source-transfer switching system of the type that includes first and second solid-state switches having respective first and second control inputs, input source connections and output connections, the output connections connected to a common load circuit connection, the control arrangement comprising:transfer control means for controlling the first and second solid-state switches via the first and second control inputs so as to selectively supply the common load circuit connection via either the first or second solid-state switch, said transfer control means further comprising first means for selectively transferring control between the first and second solid-state switches when the incoming voltage differential across the solid-state switch to be turned on is sufficient to establish an initial current flow that is in opposition to the current flow in the solid-state switch to be turned off, and second means for selectively transferring control whenever it is possible to establish that the switch to be turned off will remain off.