Power supply device
AssigneeOMRON Corporation
InventorsMasaaki Nagano, Koji Takatori, Yasutsugu Namura
Life of this patent
Estimating the term…
Abstract
A power supply device includes: an input unit; a power supply unit that generates a supply voltage from a voltage input through the input unit (10); an output unit; an LED that generates a first output in response to input of a voltage to input terminal, the LED being disposed between the input terminal—and the fuse; an LED that generates a second output in response to input of a voltage to the power supply unit through the fuse, the LED being disposed between the fuse and the power supply unit; and an LED that generates a third output in response to output from power supply unit, the LED being connected to an output terminal.
Claims4
A power supply device, comprising:
- an input unit which includes an input terminal and a protection circuit connected to the input terminal;
- a power supply unit that generates a supply voltage from a voltage input through the input unit;
- an output unit which includes an output terminal which outputs the supply voltage;
- a first output circuit that generates a first output in response to input of a voltage to the input terminal, the first output circuit being disposed between the input terminal and the protection circuit;
- a second output circuit that generates a second output in response to input of a voltage to the power supply unit through the protection circuit, the second output circuit being disposed between the protection circuit and the power supply unit;
- and
- a third output circuit that generates a third output in response to output from the power supply unit, the third output circuit being connected to the output terminal, wherein
- the first output circuit, the second output circuit, and the third output circuit are light-emitting circuits, and the first output, the second output, and the third output are light outputs,
- the first output circuit turns on in response to an input voltage exceeding a threshold voltage,
- the threshold voltage for turning on the first output circuit is higher than an operating stop voltage of the power supply unit, and a preset voltage for turning on the second output circuit is lower than the operating stop voltage of the power supply unit.
Dependencies are inferred from the claim text.