Universal meter power supplying apparatus

一种无线供电、万用表的技术，应用在电路装置、电气元件、电磁波系统等方向，能够解决操作麻烦、容量小、性价比不高等问题

Inactive Publication Date: 2014-04-23
GUANGXI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The capacity is small, and the battery needs to be replaced frequently for long-term use, which is troublesome to operate
[0005] (2) The cost performance is not high, and workers who use it all year round will spend a lot of money on batteries every year
[0006] (3) Alkaline batteries pollute the environment and require special recycling

Method used

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Examples

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Embodiment Construction

[0020] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. figure 1 It is an electrical circuit diagram of a wireless power supply device of a multimeter of the present invention. Figure 5 It is a schematic diagram of the working state of the multimeter when it is installed on the power supply base. As can be seen from the accompanying drawings, a wireless power supply device for a multimeter of the present invention belongs to a wireless electrical connection, and the multimeter can be supplied with electrical energy by sending electromagnetic waves by simply placing the multimeter on the power supply base. At the same time, there is a built-in rechargeable lithium battery, and the multimeter can also work without the power supply for a long time. Lithium batteries can be recharged multiple times without battery replacement. Overcome the disadvantages of using tandem batteries.

[0021] A wireless power supp...

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PUM

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Abstract

Provided is a universal meter power supplying apparatus which comprises a universal meter, a 220V AC voltage-stabilizing circuit, a power supplying seat, a transmitting circuit, and a receiving portion. In The transmitting circuit, the 220V AC voltage-stabilizing circuit is connected with an emitting circuit and an emitting antenna. The transmitting circuit is disposed on the top of the power supplying seat. An electromagnetic wave emitting antenna is arranged on the bottom of the power supplying seat. The transmitting circuit is supplied with commercial power and DC high voltage is obtained by rectifying and filtering the commercial power. Flowing through a voltage reducer, the DC high voltage is converted into 12V voltage supplied to the emitting circuit which emits electromagnetic waves to the receiving antenna via emitting antenna. The receiving portion is composed of a receiving circuit and a receiving antenna and installed on the back surface of the universal meter. Received by the receiving antenna, after flowing through a rectifying and filtering circuit, the electromagnetic waves are converted into DC voltage to charge a lithium battery. The lithium battery is stopped from being charged after fully charged. By a boosting circuit, the power of the lithium battery is boosted to 9V to be supplied to the universal meter. The universal meter power supplying apparatus belongs to wireless electrical connection. The universal meter is just required to be placed on the power supplying seat and is powered by the emitted electromagnetic waves. Additionally, the rechargeable lithium battery is provided.

Description

technical field [0001] The invention relates to a wireless power supply device for a multimeter, which belongs to the field of electrical instruments. Background technique [0002] The multimeter is a commonly used electronic measuring instrument and is widely used in the electrical and electronic industries. At present, almost without exception, multimeters are powered by 9V laminated batteries. There are two types of laminated batteries: carbon batteries and alkaline batteries. The capacity of carbon batteries is about 50mHA, and the capacity of alkaline batteries is about 200mHA. Due to the small capacity of the laminated battery, its power supply time is relatively short. Taking the commonly used DT-9250B multimeter as an example, using a 200mHA alkaline battery, the continuous working time is about 100 hours. For workers who use the multimeter for a long time, such as home appliance repairmen, the battery needs to be replaced about once a month. The price of laminate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J17/00G01R15/12H02J50/20
Inventor 吴其琦
Owner GUANGXI UNIVERSITY OF TECHNOLOGY
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