Short circuit detection device
AssigneesHONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., Hon Hai Precision Industry Co., Ltd.
InventorJin-Liang Xiong
Life of this patent
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Abstract
A short circuit detection device is provided to check a circuit layout. The circuit layout includes electronic components connected in parallel. Any of the electronic components includes two contacts on the circuit layout. The short circuit detection device includes a determination circuit configured to determine whether a short circuit has occurred in the circuit layout, and a detection circuit configured to determine the specific electronic component or components responsible for the short circuit. The determination circuit connects with one contact of any of the electronic components. The detection circuit connects with two contacts of any of the electronic components.
Claims10
A short circuit detection device for use on a circuit layout comprising electronic components connected in parallel, wherein any of the electronic components comprises a first contact and a second contact on the circuit layout, the first contacts of the electronic components connect together, the second contacts of the electronic components are grounded, the device comprising:
- a determination circuit configured to determine whether a short circuit has occurred in the circuit layout;
- and
- a detection circuit configured to determining the specific electronic component or components responsible for the short circuit;
- wherein the determination circuit comprises a power supply, a first operational amplifier, a first switch, a current limiting resistor, and a test clip;
- the first operational amplifier comprises a first inverting input, a first non-inverting input, and a first output;
- the first switch comprises a first control end connecting to the first output, a first connection end, and a second connection end;
- the current limiting resistor connects between the power supply and the test clip;
- the first inverting input connects to a node between the current limiting resistor and the test clip, and the first non-inverting input connects between a node between the current limiting resistor and the power supply;
- the test clip further connects with the first contact of any of the electronic components;
- and
- wherein the detection circuit connects with the first contacts of any two of the electronic components.
Dependencies are inferred from the claim text.