A one-way single live wire switch

Abstract

The present invention relates to a single live wire switch, comprising a switching power supply, a MOS tube power supply module and a relay K1, the relay K1 is used to control the single live wire L to supply power to the load LED1 or to stop power supply; When K1 is disconnected, a loop is formed between the single live wire L and the neutral wire N returned by the load LED1 to supply power to the whole switch; the MOS tube power supply module is used to generate a pulse voltage drop to replace the switch when the relay K1 is closed The power supply supplies power to the whole switch. Due to the characteristics of low internal resistance, small driving current, large load current, low calorific value and large relay load resistance of the MOS power supply module, the present invention makes the state switching fast and convenient, can reduce the interference to the power grid, and can be used at the same time without a zero line On the switch position of N.

Description

technical field [0001] The invention relates to a touch switch, in particular to a single live wire switch. Background technique [0002] Existing intelligent switches are realized by adopting the power supply mode of zero live wire and the single fire power supply method of thyristor; the switch of zero live wire needs the power supply of neutral wire and live wire, but most of the installed lighting switch circuit switch positions are not arranged at present. The zero line, so the market utilization rate is not high; the circuit using the thyristor single fire power supply method will have a flickering problem for low-power LED lamps, and according to the characteristics of the thyristor, if it is used on a large scale, it will affect the The power grid produces interference, which affects the cleanliness of the power grid. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a one-way single live wire switch, whic...

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Problems solved by technology

[0002] Existing intelligent switches are realized by adopting the power supply mode of zero live wire and the single fire power supply method of thyristor; the switch of zero live wire needs the power supply of neutral wire and live wire, but most of the installed lighting switch circuit switch positions are not arranged at present. The zero line, so the market utilization rate is not high; the circuit using the thyristor single fire power supply method will have a flickering problem for low-power LED lamps, and according to the characteristics of the thyristor, if it is used on a large scale, it will affect the Interference in the power grid affects the cleanliness of the power grid

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