Power amplification equipment for testing

Abstract

The utility model belongs to the technical field of power amplification equipment, and particularly relates to power amplification equipment for testing, which comprises a shielding box, a power amplifier is arranged in the shielding box, five silicon rubber plates are fixedly connected to the inner wall of the shielding box, a copper-coated plate is fixedly connected to the inside of the shielding box, and the copper-coated plate is fixedly connected to the inner wall of the shielding box. Wherein the inner walls of one silicon rubber plate, the shielding box and the copper-coated plate are jointly and fixedly connected with a ventilation shell, the interior of the ventilation shell is slidably connected with an isolation plate, the upper surface of the other silicon rubber plate is in contact with the bottom surface of a power amplifier, and a power supply filter is arranged in the shielding box. The power amplifier can amplify power during testing, meanwhile, the shielding box is matched with the copper-coated plate, the power amplifier can be wrapped in the shielding box, the shielding box is made of low-carbon steel, a low-frequency magnetic field and an electric field can be effectively shielded, meanwhile, the copper-coated plate can well shield a high-frequency electromagnetic field, and the power amplifier can work in a shielded space.

Description

Technical Field

[0001] The utility model belongs to the technical field of power amplifier equipment, and in particular relates to a power amplifier equipment for testing. Background Art

[0002] Test power amplifiers play a vital role in the field of electronic testing. This type of equipment is mainly used to amplify the power of input signals to meet the demand for high-power signals in specific test scenarios. It can amplify weak input signals to reach sufficient power levels to drive loads or perform more accurate tests. In the research and development, production and quality inspection of electronic products, test power amplifiers can be used to perform power tests on various electronic components, circuits and equipment to ensure that their performance meets the requirements. Communication system testing is used to test parameters such as the transmit power and receive sensitivity of communication equipment to ensure the normal operation of the communication system. In audio testing, power amplifiers can amplify audio signals to test the power output and sound quality of devices such as speakers and headphones.

[0003] Power amplifiers used for testing must maintain accuracy during testing. However, existing test equipment is often placed in a fixed location for testing. This can hinder effective interference rejection, and interference signals can be mixed into the amplified signal, causing the output signal to differ from expectations. This can lead to deviations in test results and prevent the test object from accurately reflecting its true performance.

[0004] In order to solve the above problems, this application proposes a power amplifier device for testing. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a power amplifier device for testing, which has the characteristic of being able to resist interference during testing.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a power amplification device for testing, comprising a shielding box, a power amplifier being arranged inside the shielding box, the inner wall of the shielding box being fixedly connected with a silicone rubber plate, the number of the silicone rubber plates being five, the inner wall of the shielding box being fixedly connected with a copper-coated plate, one of the silicone rubber plates, the shielding box and the inner wall of the copper-coated plate being fixedly connected with a ventilation shell, the interior of the ventilation shell being slidably connected with an isolation plate, the upper surface of another silicone rubber plate being in contact with the bottom surface of the power amplifier, and a power supply filter being arranged inside the shielding box.

[0007] As a preferred technical solution of the present invention, a shielding door is movably hinged on the left side of the shielding box, and a power-assisting plate is fixedly connected to the left side of the shielding door.

[0008] As a preferred technical solution of the present invention, a perspective plate is fixedly connected to the inner wall of the screen door, and the perspective plate needs to be in the shape of perspective glass.

[0009] As a preferred technical solution of the present invention, a connection pipe is fixedly connected to the front of the shielding box, and a protective cover is clamped inside the connection pipe.

[0010] As a preferred technical solution of the present invention, two sets of wheel frames are fixedly connected to the bottom surface of the shielding box, and the inner wall of each wheel frame is rotatably connected to a rotating wheel.

[0011] As a preferred technical solution of the present invention, a fixing frame is fixedly connected to the outer surface of the power amplifier, and the bottom surface of the fixing frame is fixedly connected to the upper surface of one of the silicone rubber plates.

[0012] As a preferred technical solution of the present invention, a connecting seat is fixedly connected to the outer surface of the power filter, and the connecting seat is fixedly connected to the front surface of another silicone rubber plate.

[0013] Compared with the prior art, the beneficial effects of the present invention are: by providing a power amplifier, the power can be amplified during testing, and at the same time, the shielding box is used in combination with the copper-coated plate to wrap the power amplifier inside, and the shielding box is made of low-carbon steel, which can effectively shield the low-frequency magnetic field and electric field. At the same time, the copper-coated plate has a good shielding effect on the high-frequency electromagnetic field, so that the power amplifier can operate in the shielded space, and then the power supply filter is used to effectively suppress the electromagnetic interference in the power supply. At the same time, the ventilation shell cooperates with the sliding of the isolation plate to ventilate or close the power amplifier, so that the power amplifier can be tested in an anti-interference manner, further improving the accuracy of the power amplifier in the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic structural diagram of the shielding box in the present utility model;

[0017] Figure 3 This is a schematic cross-sectional view of the shielding box in the present invention;

[0018] Figure 4 This is a schematic structural diagram of the mid-coated copper plate of the present invention;

[0019] In the figure: 1. Shielding box; 2. Ventilation shell; 3. Isolation plate; 4. Power assist plate; 5. Perspective plate; 6. Shielding door; 7. Wiring pipe; 8. Protective cover; 9. Wheel frame; 10. Rotating wheel; 11. Power amplifier; 12. Silicone rubber plate; 13. Copper-coated plate; 14. Power filter; 15. Connecting seat; 16. Fixing frame. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example

[0021] See also Figure 1-4 The utility model provides the following technical solutions: a power amplifier device for testing, comprising a shielding box 1, a power amplifier 11 is arranged inside the shielding box 1, a silicone rubber plate 12 is fixedly connected to the inner wall of the shielding box 1, and the number of the silicone rubber plates 12 is five; a copper-coated plate 13 is fixedly connected to the inside of the shielding box 1, wherein a ventilation shell 2 is fixedly connected to one of the silicone rubber plates 12, the shielding box 1 and the inner wall of the copper-coated plate 13; an isolation plate 3 is slidably connected to the inside of the ventilation shell 2; the upper surface of another silicone rubber plate 12 is in contact with the bottom surface of the power amplifier 11; a power supply filter 14 is arranged inside the shielding box 1; the silicone rubber plate 12 in this embodiment can provide excellent insulation, moisture resistance, shock resistance, corona resistance, leakage resistance and chemical medium resistance, and can be used for electromagnetic shielding of the power amplifier 11 by adding conductive fillers to improve its electromagnetic shielding performance.

[0022] Specifically, a shielding door 6 is movably hinged on the left side of the shielding box 1, and a power assist plate 4 is fixedly connected to the left side of the shielding door 6. In this embodiment, the shielding door 6 is provided to enable the shielding box 1 to be opened or closed, and the power assist plate 4 can facilitate the opening or closing of the shielding door 6.

[0023] Specifically, the inner wall of the shielding door 6 is fixedly connected with a perspective plate 5, which needs to be in the shape of transparent glass. In this embodiment, the perspective plate 5 is provided to facilitate observation of the interior of the shielding box 1, thereby improving the ease of use of the power amplifier 11.

[0024] Specifically, the front of the shielding box 1 is fixedly connected to a connecting tube 7, and a protective cover 8 is clamped inside the connecting tube 7. In this embodiment, by providing the connecting tube 7, the connecting wire can be moved into the shielding box 1 for use, and the protective cover 8 can protect the connecting tube 7.

[0025] Specifically, two sets of wheel frames 9 are fixedly connected to the bottom surface of the shielding box 1, and the inner wall of each wheel frame 9 is rotatably connected to a rotating wheel 10. In this embodiment, by providing the wheel frame 9, the rotating wheel 10 can be fixed on the shielding box 1, so that the shielding box 1 can be easily moved.

[0026] Specifically, the outer surface of the power amplifier 11 is fixedly connected to a fixing frame 16, and the bottom surface of the fixing frame 16 is fixedly connected to the upper surface of one of the silicone rubber plates 12. In this embodiment, by providing the fixing frame 16, the power amplifier 11 can be fixed on the silicone rubber plate 12, so that the power amplifier 11 can have stability.

[0027] Specifically, the outer surface of the power filter 14 is fixedly connected to a connecting seat 15, and the connecting seat 15 is fixedly connected to the front side of another silicone rubber plate 12. In this embodiment, by providing the connecting seat 15, the power filter 14 can be fixed for use. At the same time, the working principle of the power filter 14 is to utilize the impedance characteristics of inductance and capacitance to present different impedances to signals of different frequencies. For the interference frequency that needs to be filtered out, the filter presents high impedance to prevent the interference signal from passing through. For the normal working frequency, the filter presents low impedance to allow the working signal to pass smoothly.

[0028] The working principle and use process of the utility model are as follows: First, the shielding box 1 and the power amplifier 11 are moved to a suitable use position by the wheel frame 9 and the rotating wheel 10. When the power amplifier 11 needs to be tested, the shielding door 6 is opened by the power assist plate 4, and the protective cover 8 is removed from the connecting tube 7, so that the power line and the like are connected to the power filter 14 through the connecting tube 7, and the output end of the power filter 14 is connected to the power amplifier 11, and then the power amplifier 11 is adjusted and the power amplifier 11 is tested. When the power amplifier 11 is tested, the shielding door 6 can be temporarily closed, and the low-frequency electromagnetic field and the high-frequency electromagnetic field are shielded by the shielding box 1 in combination with the copper-coated plate 13, and the power filter 1 is connected to the power filter 14. 4. Prevent high-frequency interference signals from passing through, and allow low-frequency working current to pass smoothly. At the same time, through the silicone rubber plate 12, the external electromagnetic field hits the free electrons of the conductive particles of the silicone rubber plate 12. The free electrons move freely to form an electromagnetic field opposite to the external electromagnetic field. The internal and external electromagnetic fields cancel each other out, thereby weakening the electromagnetic interference wave. When the power amplifier 11 needs to dissipate heat, the isolation plate 3 is pulled in the ventilation shell 2 to dissipate heat from the inside of the shielding box 1 and the power amplifier 11 through the openings of the ventilation shell 2 and the isolation plate 3. When heat is not dissipated, the isolation plate 3 is slid to close the ventilation shell 2. When the power amplifier 11 is tested, the internal situation of the shielding box 1 can be observed through the perspective plate 5, thereby further improving the accuracy of the power amplifier 11 test.

[0029] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A power amplifier device for testing, characterized in that: The invention comprises a shielding box (1), wherein a power amplifier (11) is arranged inside the shielding box (1), a silicone rubber plate (12) is fixedly connected to the inner wall of the shielding box (1), the number of the silicone rubber plates (12) is five, a copper-coated plate (13) is fixedly connected to the inner wall of the shielding box (1), one of the silicone rubber plates (12), the shielding box (1) and the inner wall of the copper-coated plate (13) is fixedly connected to a ventilation shell (2), an isolation plate (3) is slidably connected to the interior of the ventilation shell (2), the upper surface of another silicone rubber plate (12) is in contact with the bottom surface of the power amplifier (11), and a power filter (14) is arranged inside the shielding box (1).

2. The power amplifier device for testing according to claim 1, characterized in that: A shielding door (6) is movably hinged on the left side of the shielding box (1), and a power assist plate (4) is fixedly connected to the left side of the shielding door (6).

3. The power amplifier device for testing according to claim 2, wherein: A perspective plate (5) is fixedly connected to the inner wall of the shielding door (6), and the perspective plate (5) needs to be in the shape of perspective glass.

4. The power amplifier device for testing according to claim 1, wherein: The front of the shielding box (1) is fixedly connected to a connection pipe (7), and a protective cover (8) is clamped inside the connection pipe (7).

5. The power amplifier device for testing according to claim 1, wherein: Two sets of wheel frames (9) are fixedly connected to the bottom surface of the shielding box (1), and the inner wall of each wheel frame (9) is rotatably connected to a rotating wheel (10).

6. The power amplifier device for testing according to claim 1, characterized in that: A fixing frame (16) is fixedly connected to the outer surface of the power amplifier (11), and a bottom surface of the fixing frame (16) is fixedly connected to the upper surface of one of the silicone rubber plates (12).

7. The power amplifier device for testing according to claim 1, characterized in that: A connecting seat (15) is fixedly connected to the outer surface of the power filter (14), and the connecting seat (15) is fixedly connected to the front surface of another silicone rubber plate (12).

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