A voltage and current meter

Abstract

The utility model discloses a voltage and current meter, which belongs to the field of voltage and current technology. The application solves the technical problems that the prior art is inefficient in measuring power supply for fault detection of weak current equipment powered by a DC plug, and can only measure no-load voltage, while the no-load voltage is often normal, and the voltage drops when loaded, resulting in the measurement result having no reference significance. For example, measuring current will destroy the original line, affecting the beauty and stability of the original line. The voltage and current meter has a power input socket and a power output socket. The device powered by a DC plug unplugs the power plug from the powered device and inserts it into the power input socket of the voltage and current meter. The power output socket is connected to the powered device through a double male DC plug adapter line, and the real-time voltage and current value with load can be conveniently measured to accurately and quickly determine whether the power supply is normal.

Description

Technical Field

[0001] The utility model belongs to the technical field of voltage and current, and in particular relates to a voltage and current meter. Background Art

[0002] With the rapid development of electronic technology, weak-current equipment has been widely used in various fields of production and life. With the increasing number of electronic equipment, in order to ensure the safe and stable operation of weak-current electronic equipment, maintenance and repair work is becoming increasingly important. Standard and stable power supply is a necessary condition for the reliable and safe operation of weak-current electronic equipment. Therefore, voltage and ammeter are essential tools for maintenance personnel.

[0003] At present, most weak-current equipment is powered by plugs and sockets (such as surveillance cameras, bridges, switches, optical transceivers, etc.). According to research, in the prior art, in the process of measuring the power supply of weak-current equipment powered by DC plugs, the power plug can only be unplugged from the powered device for measurement, and only the voltage can be measured without measuring the current. In many cases in actual applications, the voltage is normal when the power plug is unplugged from the powered device, but the voltage will drop a lot after the powered device is connected, which cannot meet the needs of the powered device. In this case, the power plug can only be opened in the middle to measure whether the loaded power supply voltage is normal to make a correct judgment. If the current is to be measured, the power supply line must be disconnected in the middle before measurement. This leads to low troubleshooting measurement efficiency and destroys the beauty and reliable connection of the original line. Summary of the invention

[0004] In view of this, in the process of measuring the power supply of low-voltage equipment powered by a DC plug, the present application provides a voltage and current meter that can measure the voltage and current in real time with load without damaging the original line.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a voltage and current meter, comprising a shell, a meter head, a battery, a battery compartment, a charging circuit, a power input socket and a power output socket, the meter head is on the front of the shell, the battery is in the battery compartment inside the shell, the battery compartment cover is on the back of the shell, the power input socket is on the left side of the shell, and the power output socket is on the right side of the shell.

[0006] Preferably, the meter is a voltage and current dual display digital meter.

[0007] Preferably, the battery is a AAA rechargeable battery.

[0008] Optionally, the battery may be a AAA dry cell or other rechargeable battery.

[0009] Preferably, the power input socket and the power output socket are 5.5*2.1 sockets.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The utility model connects a voltage and current meter of the utility model in series to the power supply line through the power supply input socket and the power supply output socket, without destroying the load measurement of the original line, so as to accurately measure whether the power supply is normal when loaded;

[0012] 2. The utility model can measure voltage and current values ​​at the same time without switching gears, greatly improving the working efficiency of measuring voltage and current;

[0013] 3. The utility model has low cost and can be applied in a wide range. 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 front view of the utility model.

[0016] Figure 2 It is the left and right side view of the utility model.

[0017] Figure 3 It is a back view of the utility model.

[0018] Figure 4 This is the measured working diagram of the utility model.

[0019] In the figure: front shell 1, meter head 2, current value 3, voltage value 4, left shell 5, charging socket 6, power input socket 7, right shell 8, power output socket 9, back shell 10, battery compartment cover 11, power supply 12, powered device camera 13, camera consumption current value 14, voltage value 15. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the implementation mode of the present application clearer, the technical scheme in the implementation mode of the present invention will be clearly and completely described below in conjunction with the drawings in the implementation mode of the present invention. Obviously, the described implementation mode is a part of the implementation mode of the present invention, not all the implementation modes. Based on the implementation mode in the present invention, all other implementation modes obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. Therefore, the following detailed description of the implementation mode of the present invention provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected implementation mode of the present invention. Based on the implementation mode in the present invention, all other implementation modes obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0021] See also Figure 1 The present application provides a technical solution: a voltage and current meter, including a front housing 1, a meter head 2, a voltage value display 4, and a current value display 3. The voltage and current meter head 2 in the present application is a voltage and current dual display meter head. When the voltage and current meter in the present application is connected to the power supply plug through the power input plug, and the power output plug is connected to the powered device, the working voltage value and current value are respectively displayed at the voltage value 4 and the current value 3 at the same time, so that the voltage and current consumption value of the powered device when working can be conveniently and intuitively seen.

[0022] See also Figure 2 The present application provides a technical solution: a voltage and current meter, including a left shell 5, a charging socket 6, a power input socket 7, a right shell 8, and a power output socket 9. In this embodiment, the charging socket uses a Type-c socket, which is convenient for charging with a mobile phone charger. In this embodiment, the power input socket and the power output socket use 5.5*2.1 sockets, which are compatible with 5.5*2.1 and 5.5*2.5 plugs.

[0023] See also Figure 3 The present application provides a technical solution: a voltage and current meter, including a back shell 10 and a battery compartment cover 11. In this embodiment, No. 7 rechargeable batteries are selected in the battery compartment, which is convenient for replacing ordinary dry batteries when charging conditions are not met.

[0024] See also Figure 4 , which is the working diagram of this application, the power supply 12 is electrically connected to the power input socket 7 through the adapter line, and the power output socket 9 is electrically connected to the camera 13 through the adapter line. The measured voltage obtained by the camera 13 is 11.9V, and the current consumption is 0.61A. After the measurement is completed, the power supply plug is pulled out from the power socket and directly inserted into the DC socket of the camera 13. The original power supply line is not damaged, the operation is simple and convenient, and the efficiency is high.

[0025] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims of the claims.

[0026] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof, but are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A voltage and current meter, characterized in that: The voltage and current meter comprises: A power input socket, electrically connected to the power supply to be tested; A power output plug electrically connected to a powered device of the power supply to be tested; Battery compartment, which can be used to install rechargeable batteries and dry batteries.

2. A voltage and current meter according to claim 1, characterized in that: When working, the voltage and current meter is connected in series between the power supply and the powered device through the power input socket and the power output plug.

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