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US 7,023,681 B2Granted
Solid-state relay
AssigneeOMRON Corporation
InventorsYasuyuki Kitahara, Yasuo Hayashi
Life of this patent
Estimating the term…
Abstract
A solid-state relay is arranged so that, during the off-state of the switching element, a surge protective means forcefully turns the switching element on based upon a surge voltage VSG multiplexed on an AC voltage VAC from output terminals; therefore, a surge current is allowed to flow by the low impedance (on-resistance) of the switching element so that the surge voltage VSG is absorbed to be set to a low surge voltage VSG, thereby making it possible to protect the switching element from damages caused by the surge voltage VSG.
Claims6
A solid-state relay, comprising:
- a switching element configured to control an on-state (conductive state) and an off-state (non-conductive state) of an electric current flowing through an external load on a load side of the relay based upon a control signal that is supplied from an input circuit;
- and
- surge protective means for, in the case when a multiplexed surge is applied from said load side during an off-state of said switching element, forcefully turning on said switching element based upon the surge.
A solid-state relay, comprising:
- a switching element configured to control an on-state (conductive state) and an off-state (non-conductive state) of an electric current flowing through an external load on a load side of the relay based upon a control signal that is supplied from an input circuit;
- and
- a surge protector which, in the case when a multiplexed surge is applied from said load side during an off-state of said switching element, forcefully turns on said switching element based upon the surge.
Dependencies are inferred from the claim text.