Device and method for detecting short circuit position in line
A technology of short-circuit location and detection device, which is applied in the direction of measuring device, fault location, measuring electricity, etc., can solve the problems of high cost, difficulty in finding the short-circuit point accurately in line short circuit, waste of components, etc., and achieve low cost, high accuracy, and easy operation convenient effect
Active Publication Date: 2018-05-08
CELESTICA TECH CONSULTANCY SHANGHAI
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Problems solved by technology
[0004] In view of the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a detection device and method for the short-circuit position in the line, which is used to solve the problem of the detection of the short-circuit of the line in the prior art, which is difficult to accurately find the short-circuit point, the cost is high, and the components are wasted The problem
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[0026] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.
[0027] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the compo...
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The present invention provides a detection device and method for a short circuit position in a circuit. The device includes: an LDO circuit leading out two probes for connecting the circuit with a short circuit in series between the two probes to be equivalent to the The adjustable resistance in the LDO circuit; the two probes are used to fix one of the probes and move the other probe in one direction in the line to change the resistance value of the equivalent adjustable resistance of the line , and then cause the change of the output voltage of the LDO circuit; the LED display screen is used to display the output voltage of the LDO circuit; when the movement of the other probe cannot cause the change of the output voltage, the The moved position is the short circuit position. The device and method of the present invention are convenient in operation, high in accuracy and low in cost for short circuit detection of circuit boards.
Description
technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a detection device and method for a short circuit position in a circuit. Background technique [0002] Circuit board short circuit is a common type of fault in electronic products. In the process of circuit board debugging, it is often encountered that multiple ICs (Integrated Circuit, integrated circuit) are connected to the same line and have a breakdown short circuit, such as a PLT_RST connection To multiple ICs, when a short circuit to ground occurs, the specific short circuit location cannot be determined, or when the PCB (Printed Circuit Board, printed circuit board) is incoming, the manufacturer will make the circuit a short circuit. Unable to determine short circuit point. The existing maintenance technology can only judge whether there is a short circuit between different lines, but cannot locate the specific location of the short circuit. [0003] In order...
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IPC IPC(8): G01R31/08G01R31/02
Inventor 王荣强
Owner CELESTICA TECH CONSULTANCY SHANGHAI