Electrical switch system

Abstract

The invention discloses an electrical switch system. According to the electrical switch system, the state of an electric device is judged by detecting current parameters, and corresponding operations are performed according to a result. The technical scheme is that the electrical switch system comprises a circuit switch component, a current transformer and a switch control circuit; the circuit switch component is mounted in a power supply circuit for allowing the power supply circuit to be conductive always in the working period of the electric device connected onto the power supply circuit; the current transformer is mounted in the power supply circuit, the current transformer does not produce output current when no current passes the power supply circuit, in the working period of the electric device, the working current on the power supply circuit passes the current transformer, and an output induced current signal on the secondary side of the current transformer is used as an input signal of the switch control circuit; the switch control circuit is connected with the current transformer for converting the input signal into a working power supply for internal circuit operation on one hand, and judging the working condition of the electric device on the power supply circuit according to the input signal on the other hand to perform control operation according to the working condition.

Description

technical field [0001] The present invention relates to electrical devices, and more particularly to electrical switching systems. Background technique [0002] In modern life, various electrical devices are increasingly used in the home as well as in commercial and industrial applications. Many times these electric devices are in a standby state and consume standby power. Although the standby power is usually much smaller than the normal power of the equipment, due to the huge number of electrical equipment and the long cumulative duration, the cumulative power consumption is still very considerable. [0003] According to relevant information, the standby power consumption in ordinary households is as follows: [0004] Table 1 [0005] [0006] Source: Meier & Lebot 2002. [0007] The share of standby power consumption in total household electricity consumption is as follows. [0008] Table 2 Estimation of Standby Power Consumption [0009] [0010] It can be se...

AI Technical Summary

Problems solved by technology

This structure is relatively complex and costly

[0018] 2: The power supply connected to the main circuit cannot withstand high impulse voltage, which reduces the reliability and safety of the system

[0019] 3: The calculation of standby power consumption requires two sensors, voltage sensor and current sensor, which increases the system cost

When electrical equipment is working, its current always flows through this high-power metal sheet resistor, which will inevitably cause it to heat up, and its heat generation is proportional to the square of the load current flowing through it. Therefore, it is easy to cause this resistor to overheat, not only A waste of electrical energy and a potential safety hazard

[0025] In addition, the high-power metal sheet resistor connected in series on the N wire in the power supply circuit will inevitably generate a voltage drop on it when a current flows, thus actually increasing the ground potential of the electrical equipment, which will have a negative impact on the electrical equipment. Interference with normal work

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