Patent ID: 8525542

Claim:
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.