Relay apparatus
AssigneeOMRON Corporation
InventorsTakahiro Ide, Yoshimasa Nagashima
Life of this patent
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Abstract
Electrical energy is charged to a dielectric by using an energizing unit. A relay apparatus includes a first electromagnetic relay and a second electromagnetic relay. One light-emitting transistor is turned on by self-maintaining the second electromagnetic relay and, then, one light-receiving transistor is turned on. Another light-emitting diode is turned on by discharging the dielectric and another light-receiving transistor is turned on. A power voltage is applied to a base of a transistor for start, and the transistor for start is turned on. The first electromagnetic relay is self-maintained, an interval between output terminals is energized, and a load is driven. Accordingly, the relay apparatus can be miniaturized with a safety function and with low costs.
Claims11
A relay apparatus comprising:
- at least one self-maintaining relay and another self-maintaining relay which are provided corresponding to input terminals;
- a dielectric which charges and discharges electrical energy;
- energizing means which energizes said dielectric and charges said electrical energy to said dielectric;
- one starting means which outputs a start signal to an input side of the one self-maintaining relay and enables a self-maintaining circuit of the one self-maintaining relay to be formed;
- another starting means which is operated by a self-maintaining operation of the one self-maintaining relay, outputs the electrical energy charged to said dielectric as a start signal, and enables a self-maintaining circuit of the other self-maintaining relay to be formed;
- and
- output means which is operated by the self-maintaining operations of the one self-maintaining relay and the other self-maintaining relay and outputs an output signal to an output terminal connected to a load, and
- wherein the one self-maintaining relay and the other self-maintaining relay comprise an electromagnetic relay and the other starting means comprises an electronic circuit including said dielectric.
Dependencies are inferred from the claim text.