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A power detection circuit and electronic product

A power supply detection and detection circuit technology, applied in the field of circuits, can solve problems such as threats to user safety and large leakage risks of electrical equipment, and achieve the effects of ensuring electricity safety, eliminating hidden dangers of electricity leakage, and improving electricity safety.

Active Publication Date: 2019-06-18
GUANGDONG HISENSE HOME APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of these problems makes electrical equipment have a great risk of leakage, which seriously threatens the safety of users

Method used

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  • A power detection circuit and electronic product
  • A power detection circuit and electronic product

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Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The power supply detection circuit of this embodiment mainly includes a power supply terminal P1, a first detection circuit, a second detection circuit, a third detection circuit, and a control circuit U5. The power supply terminal P1 includes a live wire L, a neutral wire N, and a ground wire E. Plug socket for connecting external power supply, see figure 1 , figure 2 shown.

[0022] The first detection circuit mainly includes the first protection circuit and the first optocoupler circuit U1; the fire wire L is connected to the first input terminal of the first optocoupler circuit U1 through the first protection circuit, and the second input terminal of the first optocoupler circuit U1 is connected to The neutral line N, the output end of the first optocoupler circuit U1 is connected to the detection pin T1 of...

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PUM

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Abstract

The invention provides a power supply detection circuit and an electronic product. The power supply detection circuit comprises a power supply end, a first detection circuit, a second detection circuit, a third detection circuit and a control circuit. The power supply end comprises a fire line, a zero line and a ground line. The first detection circuit comprises a first protection circuit and a first optocoupler circuit. The control circuit controls the on-off of the fire line, the zero line and the ground line according to an output signal of the first optocoupler circuit. The second detection circuit comprises a second protection circuit and a second optocoupler circuit. The control circuit controls the on-off of the fire line, the zero line and the ground line according to an output signal of the second optocoupler circuit. The third detection circuit comprises a third protection circuit and a third optocoupler circuit. The control circuit controls the on-off of the fire line, the zero line and the ground line according to an output signal of the third optocoupler circuit. According to the power supply detection circuit and the electronic product, the on-off of the fire line, the zero line and the ground line is controlled according to the output signals of the optocoupler circuits, which eliminates leakage hazards, improves electricity safety, and ensures electricity safety.

Description

technical field [0001] The invention belongs to the technical field of circuits, and in particular relates to a power detection circuit and electronic products designed using the power detection circuit. Background technique [0002] According to the current development direction of kitchen appliances, kitchen appliances will become more and more dependent on the use of electricity, and anti-shock technology is becoming more and more important. There are some problems in these traditional methods, the most prominent of which are the problems of grounding and zeroing. [0003] The grounding and neutral connection of electrical equipment are the basic safety measures to prevent indirect contact with electric shock. In actual work, many electricians do not have a clear understanding of the protection principles, scope of application, technical requirements and differences between grounding and zero connection, and even some professional technicians are unclear about these issu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H3/16H02H11/00H02H9/02G01R31/40
CPCG01R31/40H02H3/16H02H9/02H02H11/00
Inventor 秦英哲郭军波杨世恩刘昌文高民宋永刚
Owner GUANGDONG HISENSE HOME APPLIANCES CO LTD
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