Circuit board inductance system test equipment

Abstract

The utility model discloses circuit board inductance system test equipment, which comprises a circuit board and further comprises an inductor arranged on the surface of the circuit board, a pin connected and installed on one side of the inductor, and an inductor pin arranged inside the pin. The convenient plug-in assembly comprises a plug pin installed on the surface of the inductor pin in a plug-in mode, a straight plate is vertically installed on one side of the plug pin, a limiting box is fixedly installed on the surface of the straight plate, a copper core is installed in the limiting box in a plug-in mode, a cable is installed on one side of the copper core in a communicated mode, and an oscilloscope is connected to one side of the cable in a plug-in mode. One side of the oscilloscope is provided with a jack. A traditional handheld electroprobe contact type detection mode is changed into a connector auxiliary detection mode. The pin externally connected with the inductor is found out, the plug pin is installed on the surface of the pin in an inserted mode, the copper ring in the pin can improve the effect of the inductor, the limiting box is installed at the tail end, the copper core is installed in the limiting box in an inserted mode, and the poor contact phenomenon caused by the fact that an electroprobe is directly connected to the pin in a lap joint mode is avoided through the fixing mode.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board testing, in particular to circuit board inductance system testing equipment. Background Art

[0002] Circuit board inductance system testing refers to a series of operations to quantitatively evaluate the performance of inductance components on circuit boards during the production and maintenance of electronic products. Inductance is a basic passive component in the circuit, mainly used for storing magnetic field energy, filtering, impedance matching, resonance, and in some cases as an inductive component. Its core function is to change the impedance of AC signals with frequency, that is, the characteristics of passing DC and blocking AC, and to generate back electromotive force under non-steady current to resist current changes. Test purpose 1. Performance verification: Ensure that the inductor meets the design requirements, including key parameters such as inductance, quality factor (Q value), and DC resistance (DCR). 2. Fault detection: Identify components with open circuits, short circuits, or inductance values ​​that deviate from the design specifications. 3. Screening of applicable components: Select the appropriate inductor model in the design stage to meet the functional and efficiency requirements of a specific circuit. Test principle Inductance testing is mainly based on the following principles: Self-inductance measurement: By measuring the voltage drop generated when an AC current is applied to the inductor, the inductance value is calculated based on the phase difference and amplitude relationship between the voltage and current. Commonly used test methods include resonance method and bridge circuit method. Direct measurement method: Use an LCR meter (inductor capacitance resistance meter) to directly measure the inductance, DCR and other parameters of the inductor. This type of meter can provide accurate numerical readouts. Spectrum analysis method: In more complex systems, it may be necessary to analyze the performance of the inductor at different frequencies, which usually involves the use of a spectrum analyzer. Test steps 1. Preparation phase: Determine the test standards and conditions and select appropriate test equipment. 2. Connection settings: Isolate the inductor from the circuit board or connect the test instrument directly on the board to ensure that the connection is stable and does not introduce additional errors. 3. Parameter measurement: Start the test program according to the selected method and record the inductance value, Q value, DCR, etc. 4. Data analysis: Compare the measurement results with the specification or design requirements to determine whether they are qualified. 5. Recording and reporting: Record test data, analyze and report abnormal results. Test equipment LCR meter: An instrument specifically used to measure inductance (L), capacitance (C), and resistance (R). Resonance tester: Suitable for accurately measuring high-Q inductors or their performance at specific frequencies. Spectrum analyzer: Used to analyze the frequency response characteristics of inductors. Automatic test system (ATE): Automatically complete inductance testing in mass production to improve efficiency and accuracy. In summary, circuit board inductance system testing is a key link to ensure the reliability and performance of electronic products, and the quality control of inductance components is completed through scientific methods and professional equipment.

[0003] In the prior art, when testing the inductance of a circuit board, a measuring pen is mainly placed on the pin of the circuit board for testing, and then the waveform displayed on the oscilloscope is observed to detect the state of the inductance. However, since the test pen is held by a worker and contacts the surface of the pin, shaking and poor contact are inevitable, which leads to inaccurate waveforms on the oscilloscope, which is uncertain for precise measurement. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes circuit board inductance system testing equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Circuit board inductance system testing equipment, including a circuit board, and also including:

[0007] An inductor is arranged on the surface of the circuit board, a pin is connected and installed on one side of the inductor, and an inductor pin is arranged inside the pin;

[0008] A convenient plug-in component includes a pin installed on the surface of an inductor pin, a straight plate is vertically installed on one side of the pin, a limit box is fixedly installed on the surface of the straight plate, a copper core is installed inside the limit box, a cable is installed on one side of the copper core, an oscilloscope is connected to one side of the cable, and a socket is provided on one side of the oscilloscope.

[0009] According to a further technical solution, the structure of the latch is N-type.

[0010] According to a further technical solution, a copper ring is provided through the interior of the latch and is laid flat to the bottom of the limit box.

[0011] According to a further technical solution, the copper core extruded electrical contact is installed inside the limit box.

[0012] According to a further technical solution, the straight plate and the latch are arranged perpendicular to each other.

[0013] Compared with the prior art, the utility model provides a circuit board inductance system testing device, which has the following beneficial effects:

[0014] By setting up a convenient plug-in component, the traditional handheld electric pen contact detection method is changed to a connector-assisted detection method. Find the pins for the external connection of the inductor, and use the plug-in to install it on the surface of the pin. The copper ring inside the pin can increase the effect of the inductor. Install a limit box at the connection part at the end, and install a copper core inside. Connect it to the surface of the oscilloscope through the copper core and the wire. This fixing method avoids the poor contact phenomenon caused by the electric pen directly overlapping the pin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the circuit board inductance system testing equipment proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of the convenient plug-in assembly of the circuit board inductance system testing equipment proposed by the utility model;

[0017] Figure 3 This is a structural schematic diagram of an exploded view of a convenient plug-in component of a circuit board inductance system testing device proposed by the utility model;

[0018] Figure 4 This is a structural schematic diagram of a rear side view of the circuit board inductance system testing device proposed by the utility model.

[0019] In the figure:

[0020] 1. Circuit board; 2. Inductor; 3. Pin; 4. Inductor pin; 5. Convenient plug-in assembly; 6. Latch; 7. Straight board; 8. Limit box; 9. Copper core; 10. Cable; 11. Oscilloscope; 12. Jack; 13. Copper ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1: Reference Figure 1 - Figure 4 , a circuit board inductance system testing device, comprising a circuit board 1, and further comprising:

[0023] An inductor 2 is arranged on the surface of the circuit board 1, and the inductor 2 and the inductor pin 4 are the main test parts of the device; a pin 3 is connected and installed on one side of the inductor 2, and an inductor pin 4 is arranged inside the pin 3;

[0024] A convenient plug-in assembly 5 improves the shortcomings of contact-type electric pen detection in the prior art by means of a plug-in, so that the device is more stable during the detection process. The convenient plug-in assembly 5 includes a plug 6 installed on the surface of the inductor pin 4. The plug 6 and the copper ring 13 inside it are components that directly contact the inductor pin 4, and the components can increase the stability and conductivity of the contact; a straight plate 7 is vertically installed on one side of the plug 6, and there is also a wiring inside the straight plate 7, the purpose of which is to connect the cable 10; a limit box 8 is fixedly installed on the surface of the straight plate 7, and the function of the limit box 8 is to plug and install the copper core 9; the copper core 9 is plugged and installed inside the limit box 8, and the cable 10 is connected and installed on one side of the copper core 9, and the detection of the inductor 2 is realized by means of an external oscilloscope 11. The cable 10 is connected and installed on one side of the copper core 9, and the oscilloscope 11 is plugged on one side of the cable 10, and a jack 12 is provided on one side of the oscilloscope 11.

[0025] Circuit board inductance system testing equipment, the structure of the pin 6 is N-type, which can adapt well to the pin structure, thereby achieving a stable connection effect.

[0026] Circuit board inductance system testing equipment, the inside of the plug 6 is penetrated by a copper ring 13, and the copper ring 13 is a wire structure inside the connector. The copper ring 13 is laid flat to the bottom of the limit box 8.

[0027] Circuit board inductance system testing equipment, the copper core 9 is extruded and electrically contacted and installed inside the limit box 8, in order to increase the stability of the installation.

[0028] In the circuit board inductance system testing equipment, the straight plate 7 and the plug 6 are arranged perpendicularly to each other, and the vertical arrangement can ensure that the positions of the copper core 9 and the cable 10 are always kept in a horizontal position.

[0029] Working principle:

[0030] In the actual use of this device, in order to avoid the measurement error problem that exists when workers hold the electric pen and place it on the surface of the pin for testing, we adopt an improved connector method and set the contact part to an N-type plug structure. The plug can be plugged and installed on the surface of the pin to play a fixing and limiting effect. The copper ring 13 inside it is connected to one side of the copper core 9 through the wire inside the limit box 8, and the copper core 9 is connected and installed inside the oscilloscope 11 through the cable 10. The data displayed by the oscilloscope 11 is the real-time data of the inductance detection. This device sets the connector as a right-angle N-type plug-in structure, which not only achieves the fixation of the pin, but also achieves the external connection effect of the cable 10.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A circuit board inductance system testing device, comprising a circuit board (1), characterized in that: Also includes: An inductor (2) is arranged on the surface of the circuit board (1), a pin (3) is connected and installed on one side of the inductor (2), and an inductor pin (4) is arranged inside the pin (3); A convenient plug-in assembly (5), the convenient plug-in assembly (5) comprising a plug (6) plugged into and installed on the surface of an inductor pin (4), a straight plate (7) being vertically installed on one side of the plug (6), a limit box (8) being fixedly installed on the surface of the straight plate (7), a copper core (9) being plugged into and installed inside the limit box (8), a cable (10) being connected and installed on one side of the copper core (9), an oscilloscope (11) being plugged into and installed on one side of the cable (10), and a socket (12) being provided on one side of the oscilloscope (11).

2. The circuit board inductance system testing device according to claim 1, characterized in that: The structure of the latch (6) is N-type.

3. The circuit board inductance system testing device according to claim 1, characterized in that: A copper ring (13) is provided inside the latch pin (6) and extends through the inside of the copper ring (13), and the copper ring (13) is laid flat to the bottom of the limit box (8).

4. The circuit board inductance system testing device according to claim 1, characterized in that: The copper core (9) is installed inside the limit box (8) by extruding electrical contact.

5. The circuit board inductance system testing device according to claim 1, characterized in that: The straight plate (7) and the latch pin (6) are arranged perpendicular to each other.

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