Circuit device
AssigneesAutonetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
InventorsKota Oda, Gozo Ozeki, Keisuke Wakazono
Life of this patent
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Abstract
In a power supply control device, when the connection of a battery is a normal connection, and a bypass switch is off, a current flows through a first switching circuit and a diode in that order. When the connection of the battery is a normal connection, and an output voltage of the battery drops below a reference voltage, a second switching circuit switches the bypass switch from off to on.
Claims15
A circuit device that includes an electric circuit that is supplied with power when a DC voltage is applied between two terminals thereof, the circuit device comprising:
- a diode that is disposed on a supply path for supplying power to the electric circuit;
- a switch that is connected to two ends of the diode;
- and
- a switching circuit that switches the switch from off to on when the DC voltage is applied in a specific direction and drops below a predetermined voltage,
- wherein, when the DC voltage is applied in the specific direction, and the switch is off, a current flows through the electric circuit and the diode in that order.
Dependencies are inferred from the claim text.