Automatic switching dual-voltage input power supply for massage armchair

Abstract

The invention discloses an automatic switching dual-voltage input power supply for a massage armchair, which relates to a power supply. The invention provides the automatic switching dual-voltage input power supply for the massage armchair, which has a function of automatically switching dual-voltage input and can realize that the massage armchair can be used under different high-low mains supplies. The automatic switching dual-voltage input power supply is provided with a high-low voltage automatic switching module and a dual-input transformer, wherein an output terminal of the switching module is connected with a primary winding of the dual-input transformer; a secondary winding of the dual-input transformer is externally connected with the massage armchair; the switching module is provided with an input terminal, an acquisition circuit, a judgment switching circuit, the output terminal and a direct current constant voltage control circuit; the input terminal is respectively connected with a mains supply, the input end of the direct current constant voltage control circuit, the input end of the acquisition circuit and the input end of the judgment switching circuit; the output end of the direct current constant voltage control circuit is connected with a power supply input end of the judgment switching circuit; the output end of the acquisition circuit is connected with the input end of the judgment switching circuit; the output end of the judgment switching circuit is connected with the primary winding of the dual-input transformer through the output terminal; and the primary winding comprises at least two groups, and the secondary winding comprises at least one group.

Description

technical field [0001] The invention relates to a power supply, in particular to an automatic switching dual-voltage input power supply mainly used for massage chairs. Background technique [0002] At present, massage chairs with massage functions, massage sofas, massage stools and office chairs with massage functions are more and more popular with consumers all over the world. However, since the mains voltages in various countries or regions are often different, even in the same region there will be two different mains voltages, which will bring a lot of inconvenience to production and sales, increase additional costs, and is not conducive to the promotion of products. , which requires manufacturers to produce different products for different voltage specifications. [0003] Chinese patent CN2917356 discloses an electric heating insole, including an insole body, the insole body is a sandwich structure, and a heating resistance wire is laid in the interlayer, and the two te...

AI Technical Summary

Problems solved by technology

However, since the mains voltages in various countries or regions are often different, even in the same region there will be two different mains voltages, which will bring a lot of inconvenience to production and sales, increase additional costs, and is not conducive to the promotion of products. , which requires manufacturers to produce different products for different voltage specifications

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