Bonding wire microphone terminal wire on-off test fixture

Abstract

The utility model relates to an on-off test fixture for a bonding wire microphone terminal wire. The bonding wire microphone terminal wire on-off test fixture comprises a test panel and a test circuit. The test circuit comprises a first resistor, a second resistor, a first capacitor, a first triode, a buzzer, a voltage source and a test socket; the test female seat comprises a positive electrode access end and a negative electrode access end; the anode access end is connected with one end of the second resistor, and the cathode access end is respectively connected with one end of the first resistor and the base of the first triode; the other end of the second resistor is connected with the positive electrode end of the voltage source, the positive electrode end of the first capacitor and the positive electrode end of the buzzer. The cathode end of the buzzer is connected with the collector of the first triode; the cathode end of the voltage source, the cathode end of the first capacitor, the other end of the first resistor and the emitter of the first triode are respectively grounded. The bonding wire microphone terminal wire on-off test fixture can improve the terminal wire on-off test efficiency and reduce the terminal wire on-off test cost.

Description

Technical Field

[0001] The utility model relates to the technical field of microphones, in particular to a welding wire microphone terminal line continuity test fixture. Background Art

[0002] With the rapid development of modern communication technology, microphones, as an important audio input device, have been widely used in various application scenarios. In the production and quality control process of solder wire microphones, the continuity test of the terminal wire is an important link. In the related technology, when performing the continuity test of the microphone terminal wire, a multimeter probe is usually used to contact the terminal and the microphone solder joint to determine whether the terminal wire is conductive. The test procedure is cumbersome and the test cost is high. Utility Model Content

[0003] Based on this, it is necessary to provide a welding wire microphone terminal line continuity test fixture to address the problems of cumbersome testing procedures and high testing costs of microphone terminal lines in related technologies.

[0004] A wire bonding microphone terminal line continuity test fixture, comprising a test panel and a test circuit connected to the test panel, wherein the test panel is used to connect the terminal line to be tested, and the test circuit is used to test the continuity of the terminal line to be tested;

[0005] The test circuit includes a first resistor, a second resistor, a first capacitor, a first transistor, a buzzer, a voltage source and a test socket;

[0006] The test socket comprises a positive access terminal and a negative access terminal, wherein the positive access terminal and the negative access terminal are respectively used to electrically connect the positive terminal and the negative terminal of the terminal line to be tested;

[0007] The positive electrode access end is connected to one end of the second resistor, and the negative electrode access end is respectively connected to one end of the first resistor and the base of the first transistor;

[0008] The other end of the second resistor is respectively connected to the positive terminal of the voltage source, the positive terminal of the first capacitor and the positive terminal of the buzzer;

[0009] The negative terminal of the buzzer is connected to the collector of the first transistor;

[0010] The negative terminal of the voltage source, the negative terminal of the first capacitor, the other end of the first resistor and the emitter of the first transistor are grounded respectively.

[0011] The above-mentioned welding wire microphone terminal line continuity test fixture includes a test panel and a test circuit connected to the test panel, the test panel is used to connect the terminal line to be tested, and the test circuit is used to test the continuity of the terminal line to be tested; the test circuit includes a first resistor, a second resistor, a first capacitor, a first transistor, a buzzer, a voltage source and a test socket; the test socket includes a positive access terminal and a negative access terminal, and the positive access terminal and the negative access terminal are respectively used to electrically connect the positive terminal and the negative terminal of the terminal line to be tested; the positive access terminal is connected to one end of the second resistor, and the negative access terminal is respectively connected to one end of the first resistor and the base of the first transistor; the other end of the second resistor is respectively connected to the positive terminal of the voltage source, the positive terminal of the first capacitor and the positive terminal of the buzzer; the negative terminal of the buzzer is connected to the collector of the first transistor; the negative terminal of the voltage source, the negative terminal of the first capacitor, the other end of the first resistor and the emitter of the first transistor are respectively grounded. Through the mutual cooperation of the test panel and the test circuit, the welding wire microphone terminal line continuity test fixture can quickly test the continuity of the terminal line, thereby reducing the cost of terminal line testing.

[0012] In one embodiment, a test groove is provided on the test panel, and a spring probe is installed inside the test groove, and the spring probe includes a positive spring probe and a negative spring probe;

[0013] The positive spring probe and the negative spring probe are used to electrically connect the positive terminal and the negative terminal of the terminal line to be tested respectively;

[0014] The positive spring probe is electrically connected to the positive access terminal, and the negative spring probe is electrically connected to the negative access terminal.

[0015] In one of the embodiments, the test panel is provided with a plurality of test grooves of different sizes;

[0016] The multiple test grooves of different sizes are respectively used to match the terminal wires to be tested with different plastic shell sizes.

[0017] In one embodiment, the distances between the positive spring probe and the negative spring probe corresponding to the terminal wires to be tested with different plastic shell sizes are different.

[0018] In one embodiment, the test socket includes a first test socket and a second test socket;

[0019] The relative positions of the positive electrode access terminal and the negative electrode access terminal in the first test socket are opposite to the relative positions of the positive electrode access terminal and the negative electrode access terminal in the second test socket.

[0020] In one embodiment, the output voltage of the voltage source is 3V-4.5V.

[0021] In one embodiment, the resistance of the first resistor is 2.2 kΩ.

[0022] In one embodiment, the resistance of the second resistor is 1.1 kΩ.

[0023] In one embodiment, the capacitance of the first capacitor is 1 μF.

[0024] In one embodiment, the first transistor is a 8050 transistor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a circuit schematic diagram of the test circuit in the wire-welding microphone terminal wire continuity test fixture of the utility model;

[0026] Figure 2 This is a structural schematic diagram of the test panel in the wire-welding microphone terminal wire continuity test fixture of the utility model;

[0027] Figure 3 for Figure 2 Schematic diagram of the connection structure between the test panel and the terminal line to be tested;

[0028] Among them, 10 is a test panel, 30 is a terminal line to be tested, 11 is a test groove, 12 is a spring probe, R1 is a first resistor, R2 is a second resistor, C1 is a first capacitor, V1 is a voltage source, Q1 is a first transistor, BEEP is a buzzer, and MIC is a test socket. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only."

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] The utility model discloses a welding wire microphone terminal line continuity test fixture.

[0033] like Figures 1 to 3 As shown, the wire bonding microphone terminal line continuity test fixture includes a test panel 10 and a test circuit 20 connected to the test panel 10. The test panel 10 is used to connect the terminal line 30 to be tested, and the test circuit 20 is used to test the continuity of the terminal line 30 to be tested.

[0034] The test circuit 20 includes a first resistor R1, a second resistor R2, a first capacitor C1, a first transistor Q1, a buzzer BEEP, a voltage source V1 and a test socket MIC; the test socket MIC includes a positive access terminal and a negative access terminal, and the positive access terminal and the negative access terminal are respectively used to electrically connect the positive terminal and the negative terminal of the terminal line 30 to be tested; the positive access terminal is connected to one end of the second resistor R2, and the negative access terminal is respectively connected to one end of the first resistor R1 and the base of the first transistor Q1; the other end of the second resistor R2 is respectively connected to the positive terminal of the voltage source V1, the positive terminal of the first capacitor C1 and the positive terminal of the buzzer BEEP; the negative terminal of the buzzer BEEP is connected to the collector of the first transistor Q1; the negative terminal of the voltage source V1, the negative terminal of the first capacitor C1, the other end of the first resistor R1 and the emitter of the first transistor Q1 are respectively grounded.

[0035] The first resistor R1 is a pull-down resistor; the second resistor R2 is a power supply bias resistor of the wire bonding microphone; the first capacitor C1 is a filter capacitor, which can improve the stability of the output voltage of the voltage source V1. When a conduction voltage is applied to the base of the first transistor Q1, the first transistor Q1 is turned on, otherwise the first transistor Q1 is turned off.

[0036] The voltage source V1 can provide working voltage for the buzzer BEEP and the first transistor Q1. The buzzer BEEP is an active buzzer with an internal oscillation source that can drive the buzzer to sound. The buzzer BEEP can make a buzzing sound when powered on, and will no longer make a buzzing sound when powered off. When testing the continuity of the terminal line 30 to be tested by the welding wire microphone terminal line continuity test fixture, the positive access end of the test socket MIC is electrically connected to the positive end of the terminal line 30 to be tested, and the negative access end of the test socket MIC is electrically connected to the negative end of the terminal line 30 to be tested; if the terminal line 30 to be tested is a circuit, the voltage source V1 applies a conduction voltage to the base of the first transistor Q1, so that the first transistor Q1 is turned on, so that the buzzer BEEP is normally powered on and a buzzing sound is sounded to inform the tester that the corresponding terminal line 30 to be tested is a circuit; if the terminal line 30 to be tested is an open circuit, the voltage source V1 cannot apply a conduction voltage to the base of the first transistor Q1, so that the first transistor Q1 is turned off, so that the buzzer BEEP cannot be powered on and cannot emit a buzzing sound, so as to inform the tester that the corresponding terminal line 30 to be tested is an open circuit.

[0037] The above-mentioned welding wire microphone terminal line continuity test fixture includes a test panel and a test circuit connected to the test panel, the test panel is used to connect the terminal line to be tested, and the test circuit is used to test the continuity of the terminal line to be tested; the test circuit includes a first resistor, a second resistor, a first capacitor, a first transistor, a buzzer, a voltage source and a test socket; the test socket includes a positive access terminal and a negative access terminal, and the positive access terminal and the negative access terminal are respectively used to electrically connect the positive terminal and the negative terminal of the terminal line to be tested; the positive access terminal is connected to one end of the second resistor, and the negative access terminal is respectively connected to one end of the first resistor and the base of the first transistor; the other end of the second resistor is respectively connected to the positive terminal of the voltage source, the positive terminal of the first capacitor and the positive terminal of the buzzer; the negative terminal of the buzzer is connected to the collector of the first transistor; the negative terminal of the voltage source, the negative terminal of the first capacitor, the other end of the first resistor and the emitter of the first transistor are respectively grounded. Through the mutual cooperation of the test panel and the test circuit, the welding wire microphone terminal line continuity test fixture can quickly test the continuity of the terminal line, thereby reducing the cost of terminal line testing.

[0038] Among them, a test groove 11 is provided on the test panel 10, and a spring probe 12 is installed inside the test groove. The spring probe 12 includes a positive spring probe and a negative spring probe; the positive spring probe and the negative spring probe are respectively used to electrically connect the positive terminal and the negative terminal of the terminal line 30 to be tested; the positive spring probe is electrically connected to the positive access terminal of the test socket MIC, and the negative spring probe is electrically connected to the negative access terminal of the test socket MIC. By using the spring probe 12 to electrically connect the positive terminal and the negative terminal of the terminal line 30 to be tested, compared with the plug-in electrical connection, the stability of the electrical connection can be improved and the terminal opening of the terminal line 30 to be tested is not easily damaged.

[0039] Among them, a plurality of test grooves 11 of different sizes are provided on the test panel 10; the plurality of test grooves 11 of different sizes are respectively used to match the terminal wires 30 to be tested with different plastic shell sizes. By setting a plurality of test grooves 11 of different sizes on the test panel 10, the welding wire microphone terminal wire continuity test fixture can be compatible with a plurality of terminal wires 30 to be tested with different terminal sizes. When the continuity of the terminal wire 30 to be tested is tested by the welding wire microphone terminal wire continuity test fixture, it is only necessary to install the terminal plastic shell of the terminal wire 30 to be tested on the test groove 11, so that the positive spring probe and the negative spring probe can be electrically connected to the positive terminal and the negative terminal of the terminal wire 30 to be tested respectively.

[0040] The distances between the positive spring probe and the negative spring probe corresponding to the terminal wires 30 to be tested of different shell sizes are different. By making the distances between the positive spring probe and the negative spring probe different, the wire bonding microphone terminal wire continuity test fixture can be compatible with multiple terminal wires 30 to be tested with different wire distances.

[0041] Among them, the test socket MIC includes a first test socket and a second test socket; the relative positions of the positive access terminal and the negative access terminal in the first test socket are opposite to the relative positions of the positive access terminal and the negative access terminal in the second test socket. It should be noted that during the test of the terminal line 30 to be tested, the line sequence of the positive terminal and the negative terminal of different terminal lines 30 to be tested may change. In order to match the line sequence change of the positive terminal and the negative terminal, by setting the first test socket and the second test socket on the test circuit 20, it can meet the needs of different line sequences. For example, in the state of the initial line sequence, the positive spring probe and the negative spring probe on the test panel 10 are respectively connected to the positive access terminal and the negative access terminal on the first test socket of the test circuit 20; when the line sequence changes, the positive spring probe and the negative spring probe on the test panel 10 are respectively connected to the positive access terminal and the negative access terminal on the second test socket of the test circuit 20. In order to facilitate the replacement of the positive and negative poles of the spring probe 12 , the first test female socket and the second test female socket may be straight-insertion male sockets with different positive and negative directions.

[0042] Among them, the output voltage range of the voltage source V1 can be set according to actual conditions. Preferably, the output voltage of the voltage source V1 is 3V-4.5V. The resistance value of the first resistor R1 and the resistance value of the second resistor R2 can be set according to actual conditions. Preferably, the resistance value of the first resistor R1 is 2.2kΩ, and the resistance value of the second resistor R2 is 1.1kΩ. The capacitance value of the first capacitor C1 can be set according to actual conditions. Preferably, the capacitance value of the first capacitor C1 is 1μF. The model of the first transistor Q1 can be set according to actual conditions. Preferably, the first transistor Q1 is an 8050 transistor. The 8050 transistor has the characteristics of low voltage and high current, and the switching characteristics are stable.

[0043] The wire-bond microphone terminal wire continuity test fixture of the utility model is compatible with a variety of terminal wires 30 to be tested with different wire sequences and terminal sizes, and has wide applicability.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A welding wire microphone terminal line continuity test fixture, characterized in that: It includes a test panel and a test circuit connected to the test panel, wherein the test panel is used to connect the terminal line to be tested, and the test circuit is used to test the continuity of the terminal line to be tested; The test circuit includes a first resistor, a second resistor, a first capacitor, a first transistor, a buzzer, a voltage source and a test socket; The test socket comprises a positive access terminal and a negative access terminal, wherein the positive access terminal and the negative access terminal are respectively used to electrically connect the positive terminal and the negative terminal of the terminal line to be tested; The positive electrode access end is connected to one end of the second resistor, and the negative electrode access end is respectively connected to one end of the first resistor and the base of the first transistor; The other end of the second resistor is respectively connected to the positive terminal of the voltage source, the positive terminal of the first capacitor and the positive terminal of the buzzer; The negative terminal of the buzzer is connected to the collector of the first transistor; The negative terminal of the voltage source, the negative terminal of the first capacitor, the other end of the first resistor and the emitter of the first transistor are grounded respectively.

2. The wire bonding microphone terminal wire continuity test fixture according to claim 1, characterized in that: The test panel is provided with a test groove, and a spring probe is installed inside the test groove, and the spring probe includes a positive spring probe and a negative spring probe; The positive spring probe and the negative spring probe are used to electrically connect the positive terminal and the negative terminal of the terminal line to be tested respectively; The positive spring probe is electrically connected to the positive access terminal, and the negative spring probe is electrically connected to the negative access terminal.

3. The wire bonding microphone terminal wire continuity test fixture according to claim 2, characterized in that: The test panel is provided with a plurality of test grooves of different sizes; The multiple test grooves of different sizes are respectively used to match the terminal wires to be tested with different plastic shell sizes.

4. The wire bonding microphone terminal wire continuity test fixture according to claim 3, characterized in that: The distances between the positive spring probe and the negative spring probe corresponding to the terminal wires to be tested of different plastic shell sizes are different.

5. The wire bonding microphone terminal wire continuity test fixture according to any one of claims 2 to 4, characterized in that: The test socket includes a first test socket and a second test socket; The relative positions of the positive electrode access terminal and the negative electrode access terminal in the first test socket are opposite to the relative positions of the positive electrode access terminal and the negative electrode access terminal in the second test socket.

6. The wire bonding microphone terminal wire continuity test fixture according to claim 1, characterized in that: The output voltage of the voltage source is 3V-4.5V.

7. The wire bonding microphone terminal wire continuity test fixture according to claim 1, characterized in that: The resistance of the first resistor is 2.2 kΩ.

8. The wire bonding microphone terminal wire continuity test fixture according to claim 1, characterized in that: The resistance of the second resistor is 1.1 kΩ.

9. The wire bonding microphone terminal wire continuity test fixture according to claim 1, characterized in that: The capacitance of the first capacitor is 1 μF.

10. The wire bonding microphone terminal wire continuity test fixture according to claim 1, characterized in that: The first transistor is an 8050 transistor.

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