Voltage and current conversion box

Abstract

The utility model relates to the field of converters, in particular to a voltage and current conversion box. The conversion box comprises a box body, a PCB, a power switch, a Hall current sensor and a BNC signal output interface, the PCB, the power switch, the Hall current sensor and the BNC signal output interface are all installed on the box body, the power switch, the Hall current sensor and the BNC signal output interface are all electrically connected with the PCB, and the BNC signal output interface is electrically connected with a power meter or a power analyzer or an oscilloscope. And a resistor is mounted on the PCB. According to the utility model, the PCB is installed in the box body, the Hall current sensor transmits an external current signal to the PCB, and the high-precision resistor on the PCB amplifies the current signal and outputs a voltage signal to the power meter or the power analyzer or the oscilloscope, thereby improving the accuracy and stability of equipment testing.

Description

Technical Field

[0001] The utility model relates to the field of converters, in particular to a voltage and current conversion box. Background Art

[0002] When the existing equipment performs performance tests under different environments, the Hall current sensor is directly electrically connected to the power meter, power analyzer or oscilloscope. This test method has poor accuracy and stability. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the technical problem described in the background technology, the utility model provides a voltage-current conversion box. By installing a PCB board in the box body, the Hall current sensor transmits the external current signal to the PCB board, and the high-precision resistor on the PCB board amplifies the current signal and outputs a voltage signal to a power meter or a power analyzer or an oscilloscope, thereby improving the accuracy and stability of equipment testing.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A voltage-current conversion box comprises a box body, a PCB board, a power switch, a Hall current sensor, and a BNC signal output interface. The PCB board, the power switch, the Hall current sensor, and the BNC signal output interface are all mounted on the box body. The power switch, the Hall current sensor, and the BNC signal output interface are all electrically connected to the PCB board. The BNC signal output interface is electrically connected to a power meter, a power analyzer, or an oscilloscope. A resistor is mounted on the PCB board.

[0006] Specifically, the Hall current sensor includes a male head and a female head, the female head is fixed on the box body, the female head is electrically connected to the PCB board, and the female head is plugged together with the male head.

[0007] Specifically, an axial flow fan for heat dissipation is installed on the side of the box body.

[0008] Specifically, a handle is fixed on the box body.

[0009] Specifically, a mounting plate is fixedly connected in the box body, and the PCB board is fixedly connected to the mounting plate.

[0010] Specifically, an indicator light row for displaying the power-on status of each circuit of the PCB board CH1 to CH8 is installed on the box body, and the indicator light row is electrically connected to the PCB board.

[0011] Specifically, the box body includes an upper cover plate and a base shell, and the upper cover plate and the base shell are fixedly connected together by bolts.

[0012] Specifically, a DB9 interface is installed on the box body, and the Hall current sensor is plugged into the DB9 interface.

[0013] The beneficial effect of the utility model is that the utility model provides a voltage-current conversion box. By installing a PCB board in the box body, the Hall current sensor transmits the external current signal to the PCB board, and the high-precision resistor on the PCB board amplifies the current signal and outputs a voltage signal to a power meter or a power analyzer or an oscilloscope, thereby improving the accuracy and stability of equipment testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

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

[0016] In the figure, 1. Box body, 2. PCB board, 3. Power switch, 4. DB9 interface, 5. BNC signal output interface,

[0017] 6. Axial-flow fan, 7. Handle, 8. Mounting plate, 9. Indicator light row. DETAILED DESCRIPTION

[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] As attached Figure 1 As shown, a voltage-current conversion box includes a box body 1, a PCB board 2, a power switch 3, a Hall current sensor, and a BNC signal output interface 5. The PCB board 2, the power switch 3, the Hall current sensor, and the BNC signal output interface 5 are all installed on the box body 1, the power switch 3, the Hall current sensor, and the BNC signal output interface 5 are all electrically connected to the PCB board 2, the BNC signal output interface 5 is electrically connected to a power meter or a power analyzer or an oscilloscope, and a resistor is installed on the PCB board 2.

[0021] The Hall current sensor comprises a male head and a female head, the female head is fixed on the box body 1, the female head is electrically connected to the PCB board 2, and the female head and the male head are plugged together.

[0022] An axial flow fan 6 for heat dissipation is installed on the side of the box body 1.

[0023] A handle 7 is fixed on the box body 1 .

[0024] A mounting plate 8 is fixedly connected inside the box body 1 , and the PCB board 2 is fixedly connected to the mounting plate 8 .

[0025] The box body 1 is provided with an indicator light row 9 for displaying the power-on status of each channel CH1 to CH8 of the PCB board 2 , and the indicator light row 9 is electrically connected to the PCB board 2 .

[0026] The box body 1 comprises an upper cover plate and a base shell, and the upper cover plate and the base shell are fixedly connected together by bolts.

[0027] The box body 1 is provided with a DB9 interface 4 , and the Hall current sensor is plugged into the DB9 interface 4 .

[0028] The working method of the present application is as follows: connect a power meter or power analyzer or oscilloscope to the BNC signal output interface 5, connect the male connector of the Hall current sensor to the female connector on the box body 1, power on the socket on the box body 1, and turn on the power switch 3. At this time, the sensor current signal input from the Hall current sensor is converted into a more accurate voltage signal output through the PCB board 2 with high-precision resistors.

[0029] The present application can convert current signals into voltage signals for easy measurement and analysis. This process involves Ohm's law (V=IR), that is, through a known resistor (R), the current (I) flowing through it can generate a voltage (V) proportional to it.

[0030] The high-precision resistors on PCB 2 are designed to achieve accurate current-to-voltage conversion. The high-precision resistors have very low tolerances (i.e., the deviation of their resistance values ​​is extremely small), which ensures the accuracy of current measurement. The selection and configuration of these resistors are designed to minimize errors and ensure the accuracy of the signal during the conversion process.

[0031] During the conversion process, the voltage signal generated by the current signal passing through the high-precision resistor on the PCB board 2 is usually very small and needs to be amplified before it can be used for subsequent measurement and analysis. The present application adopts linear amplification technology to increase the amplitude of the voltage signal by a certain multiple while keeping the shape of the original signal unchanged. This amplification process requires the amplifier to have high linearity to avoid introducing additional errors or distortion.

[0032] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A voltage and current conversion box, characterized in that: The invention comprises a box body (1), a PCB board (2), a power switch (3), a Hall current sensor, and a BNC signal output interface (5); the PCB board (2), the power switch (3), the Hall current sensor, and the BNC signal output interface (5) are all mounted on the box body (1); the power switch (3), the Hall current sensor, and the BNC signal output interface (5) are all electrically connected to the PCB board (2); the BNC signal output interface (5) is electrically connected to a power meter, a power analyzer, or an oscilloscope; and a resistor is mounted on the PCB board (2).

2. The voltage-current conversion box according to claim 1, characterized in that: The Hall current sensor comprises a male head and a female head, the female head is fixed on the box body (1), the female head is electrically connected to the PCB board (2), and the female head and the male head are plugged together.

3. The voltage-current conversion box according to claim 1, characterized in that: An axial flow fan (6) for heat dissipation is installed on the side of the box body (1).

4. The voltage-current conversion box according to claim 1, characterized in that: A handle (7) is fixed on the box body (1).

5. The voltage-current conversion box according to claim 1, characterized in that: A mounting plate (8) is fixedly connected inside the box body (1), and the PCB board (2) is fixedly connected to the mounting plate (8).

6. The voltage-current conversion box according to claim 1, characterized in that: The box body (1) is provided with an indicator light row (9) for displaying the power-on status of each channel CH1 to CH8 of the PCB board (2); the indicator light row (9) is electrically connected to the PCB board (2).

7. The voltage-current conversion box according to claim 1, characterized in that: The box body (1) comprises an upper cover plate and a base shell, and the upper cover plate and the base shell are fixedly connected together by bolts.

8. The voltage-current conversion box according to claim 1, characterized in that: The box body (1) is provided with a DB9 interface (4), and the Hall current sensor is plugged into the DB9 interface (4).

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