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US 10,768,241 B2Granted
Power supply circuit and sound equipment
AssigneeYamaha Corporation
InventorsTakuya Kataoka, Hitoshi Shima
Life of this patent
Estimating the term…
Abstract
A power supply circuit includes an internal power source that receives power supply from an external power source, an abnormality detection circuit that receives power supply from the internal power source to detect abnormalities of the external power source, a protection target circuit that receives the power supply from the external power source, and a protection function unit that restricts electric power supplied to the protection target circuit to a predetermined range, when the abnormality detection circuit detects the abnormalities.
Claims8
A power supply circuit comprising:
- an internal power source that receives electric power from an external power source;
- an abnormality detection circuit that detects abnormalities of the external power source;
- a protection target circuit that receives the electric power from the external power source;
- and
- a protection function unit that restricts electric power supplied to the protection target circuit to a predetermined range, upon the abnormality detection circuit detecting the abnormalities,
- wherein the external power source includes a first external power source and a second external power source,
- wherein the internal power source receives electric power from at least one of the first or second external power source, and
- wherein the abnormality detection circuit detects abnormalities of the second external power source.
5 more elements
A sound equipment comprising:
- a sound processing circuit;
- and
- a power supply circuit that supplies electric power to the sound processing circuit, and comprising:
- an internal power source that receives electric power from an external power source;
- an abnormality detection circuit that detects abnormalities of the external power source;
- a protection target circuit that receives the electric power from the external power source;
- and
- a protection function unit that restricts electric power supplied to the sound processing circuit to a predetermined range, upon the abnormality detection circuit detecting the abnormalities,
- wherein the external power source includes a first external power source and a second external power source,
- wherein the internal power source receives electric power from at least one of the first or second external power source, and
- wherein the abnormality detection circuit detects abnormalities of the second external power source.
8 more elements
Dependencies are inferred from the claim text.