Device and method for detecting short circuit location in line
A technology for short-circuit location and detection device, applied in the direction of measuring device, fault location, measuring electricity, etc., can solve the problems of high cost, waste of components, and difficulty in accurately finding the short-circuit point of line short circuit, and achieves low cost, convenient operation, and accuracy. high effect
Active Publication Date: 2015-05-13
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 invention provides device and method for detecting short circuit location in a line. The device comprises an LDO (Linear Drop Out) circuit for introducing two probes and connecting a short-circuit line in series between the two probes to be equivalent with an adjustable resistor in the LDO circuit, the two probes, and an LED display screen for displaying output voltage of the LDO circuit; one of the two probes is fixed, and while another probed moves in one direction in the line to change the resistance of the adjustable resistor which enables the equivalent line so as to lead to the change of output voltage of the LDO circuit; if the another probe cannot change the output voltage by moving, the location arrived by the another probe is the short circuit location. With the adoption of the device and method, the short circuit of the circuit board can be conveniently detected, the accuracy is high, and the cost is low.
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, it is impossible to determine the specific short circuit location, or when the PCB (Printed Circuit Board, printed circuit board) is incoming, it will also encounter the bad phenomenon that the manufacturer makes the circuit short circuit. It is also impossible to determine the short circuit point. The existing maintenance technology can only judge whether there is a short circuit between different lines, but cannot ...
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IPC IPC(8): G01R31/08G01R31/02
Inventor 王荣强
Owner CELESTICA TECH CONSULTANCY SHANGHAI