Small electronic load instrument applied to production

Abstract

The utility model discloses a miniature electronic load instrument applied to production, which comprises an instrument body, one end of the instrument body is provided with a to-be-tested switching power supply connecting port, the instrument body is provided with a liquid crystal display screen and a plurality of function keys, and the function keys comprise a start key, a setting key, a + key and a-key. A main control board is arranged in the instrument body, the main control board comprises a single chip microcomputer, a to-be-tested switching power supply connecting port, a liquid crystal display screen, a start key, a setting key, a + key and a-key are electrically connected with the main control board, and the to-be-tested switching power supply connecting port, the single chip microcomputer, the liquid crystal display screen, the start key, the setting key, the + key and the-key form a main control circuit. According to the utility model, the conventional professional equipment is replaced, the cost of instruments, equipment and materials is greatly reduced, the parameter adjustment of a test experiment product can be quickly responded, and meanwhile, various test parameters of the test product can be intuitively observed through the 1602 liquid crystal on the surface, so that the use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of electronic product switching power supply manufacturing, specifically to a small electronic load instrument used in production. Background Technology

[0002] In the current production process of electronic product switching power supplies, relevant process aging tests or long-term aging tests need to be carried out on the switching power supplies during actual production or testing. Currently, these tests are conducted using specialized equipment or resistors. However, the cost of the specialized equipment is relatively high, while using resistors often requires adjustment of the power supply parameters, resulting in large inventory and poor timeliness. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a small electronic load instrument for production, which can significantly reduce the cost of related instruments, equipment and materials, and can respond quickly to parameter adjustments of the test products. The various test parameters of the test products can be directly observed through the 1602 liquid crystal on the surface, making it convenient to use.

[0004] The technical solution of this utility model is as follows:

[0005] A small electronic load tester for production applications includes an instrument body. One end of the instrument body has a connection port for a switching power supply under test. The instrument body has an LCD screen and several function buttons, including a start button, a set button, a + button, and a - button. The instrument body contains a main control board, which includes a microcontroller. The connection port for the switching power supply under test, the LCD screen, the start button, the set button, the + button, and the - button are electrically connected to the main control board. The connection port for the switching power supply under test, the microcontroller, the LCD screen, the start button, the set button, the + button, and the - button constitute the main control circuit.

[0006] Furthermore, the instrument body is composed of an upper shell and a lower shell connected vertically.

[0007] Furthermore, the liquid crystal display screen uses 1602 liquid crystal.

[0008] Furthermore, the microcontroller used is an STC8A8K64S4A12 microcontroller.

[0009] Furthermore, the small electronic load instrument also includes a finned heat sink and a DC fan. The finned heat sink is mounted on the instrument body, and the DC fan is mounted on the finned heat sink. The main control board also includes a temperature control element. The temperature control element, the finned heat sink, and the DC fan constitute a heat dissipation circuit.

[0010] Compared with the prior art, the advantages of this utility model are as follows: The small electronic load instrument provided by this utility model replaces the existing professional equipment, which greatly reduces the cost of instruments, equipment and materials. It can also respond quickly to the parameter adjustment of the test product. As long as the relevant settings are made according to the output parameters of the power supply being tested (current, voltage and other parameters), the aging test of the product can be performed immediately. At the same time, the various test parameters of the test product can be directly observed through the 1602 liquid crystal on the surface, which is convenient to use. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 A schematic diagram of the external structure of a small electronic load instrument for production application provided by this utility model;

[0013] Figure 2 An internal structural diagram of a small electronic load instrument for production application provided by this utility model;

[0014] Figure 3 This is a circuit diagram of the microcontroller described in this utility model. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0016] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0017] Example

[0018] Please see Figure 1 , Figure 2This embodiment provides a small electronic load tester for production applications, including an instrument body 1, a finned heat sink 2, and a DC fan 3. One end of the instrument body 1 is provided with a connection port 4 for a switching power supply to be tested. The instrument body 1 is provided with an LCD screen 5 and several function buttons, including a start button 61, a set button 62, a + button 63, and a - button 64. The instrument body 1 is provided with a main control board 7, which includes a microcontroller and a temperature control element. The connection port 4 for the switching power supply to be tested, the LCD screen 5, the start button 61, the set button 62, the + button 63, and the - button 64 are electrically connected to the main control board 7. The connection port 4 for the switching power supply to be tested, the microcontroller, the LCD screen 5, the start button 61, the set button 62, the + button 63, and the - button 64 constitute the main control circuit. The finned heat sink 2 is disposed on the instrument body 1, and the DC fan 3 is disposed on the finned heat sink 2. The temperature control element, the finned heat sink 2, and the DC fan 3 constitute the heat dissipation circuit.

[0019] The instrument body 1 is composed of an upper shell 11 and a lower shell 12 connected vertically.

[0020] The liquid crystal display screen 5 is a 1602 liquid crystal.

[0021] The microcontroller used is the STC8A8K64S4A12 microcontroller, such as... Figure 3 As shown.

[0022] Usage process:

[0023] 1. Connect the power supply;

[0024] 2. Set the relevant parameters on the 1602 LCD using the setting button 62;

[0025] 3. Connect the power supply to be tested to the power supply connection port of the small electronic load instrument;

[0026] 4. Press the start button 61 to perform an aging test on the switching power supply to be tested;

[0027] 5. During the operation, the staff observes the various parameters of the switching power supply under test through the data on the 1602 LCD.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small electronic load instrument for production applications, characterized in that: The instrument includes a main body, one end of which is provided with a connection port for a switching power supply to be tested. The main body is provided with an LCD screen and several function buttons, including a start button, a setting button, a + button, and a - button. The main control board is provided in the main control board, which includes a microcontroller. The connection port for the switching power supply to be tested, the LCD screen, the start button, the setting button, the + button, and the - button are electrically connected to the main control board. The connection port for the switching power supply to be tested, the microcontroller, the LCD screen, the start button, the setting button, the + button, and the - button constitute the main control circuit.

2. The small electronic load instrument for production application according to claim 1, characterized in that: The instrument body consists of an upper shell and a lower shell connected vertically.

3. The small electronic load instrument for production application according to claim 1, characterized in that: The LCD screen uses a 1602 LCD.

4. A small electronic load instrument for production application according to claim 1, characterized in that: The microcontroller used is the STC8A8K64S4A12 microcontroller.

5. A small electronic load instrument for production application according to claim 1, characterized in that: The small electronic load instrument also includes a finned heat sink and a DC fan. The finned heat sink is mounted on the instrument body, and the DC fan is mounted on the finned heat sink. The main control board also includes a temperature control element. The temperature control element, the finned heat sink, and the DC fan constitute a heat dissipation circuit.

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