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US 2018/0026439 A1Published application
Safety protection circuit
AssigneeHewlett-Packard Development Company, L.P.
InventorsJuan Luis Lopez Rodriguez, David Soriano Fosas, Marc Soler Jauma
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Abstract
A safety protection circuit is described, comprising a fuse, a first voltage detection circuit, a first Silicon-Controlled Rectifier, SCR, wherein the first SCR is triggered upon detection of a threshold voltage by the first voltage detection circuit, a second voltage detection circuit, and a second SCR, wherein the second SCR is triggered upon detection of a threshold voltage by the second voltage detection circuit.
Claims15
A safety protection circuit comprising:
- a fuse, a first terminal of the fuse coupled to a power supply line from the output of a power supply;
- a first voltage detection circuit, coupled between a second terminal of the fuse and ground;
- a first Silicon-Controlled Rectifier, SCR, coupled between the power supply line and ground, wherein the first SCR is triggered upon detection of a threshold voltage by the first voltage detection circuit;
- a second voltage detection circuit, coupled between the second terminal of the fuse and ground;
- a second SCR, coupled between the power supply line and ground, wherein the second SCR is triggered upon detection of a threshold voltage by the second voltage detection circuit.
2 more elements
A safety protection circuit comprising:
- a first circuit to detect a voltage, coupled between a power supply line from the output of a power supply and ground;
- a first switchable conduction path configured to conduct based on an output from the first circuit indicating detection of a predetermined voltage, coupled between the power supply line and ground;
- a second circuit to detect a voltage, coupled between the power supply line and ground;
- and
- a second switchable conduction path configured to conduct based on an output from the second circuit indicating detection of a predetermined voltage, coupled between the power supply line and ground.
2 more elements
A method of providing a safety protection circuit, comprising:
- providing a fuse, the first terminal of the fuse coupled to a power supply line from the output of a power supply;
- providing a first voltage detection circuit coupled between the second terminal of the fuse and ground;
- providing a first Silicon-Controlled Rectifier, SCR, coupled between the power supply line and ground, wherein the SCR is triggered upon detection of a threshold voltage by the first voltage detection circuit;
- providing a second voltage detection circuit, coupled between the second terminal of the fuse and ground;
- providing a second SCR, coupled between the power supply line and ground, wherein the second SCR is triggered upon detection of a threshold voltage by the second voltage detection circuit.
2 more elements
Dependencies are inferred from the claim text.