Power supply detection circuit and electronic product

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...

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

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