Simple four stages light changing switch circuit

Published:2011/6/27 2:59:00 Author:TaoXi | Keyword: Simple, four stages, light changing, switch circuit | From:SeekIC

The simple four stages light changing switch circuit is as shown in the figure, it has four stages of luminance combination: when the switches S1, S2, S3 are all closing, light E is the brightest; when the switches S1 and S3 are closing, the light E is in the bright state; when the S1 and S2 are closing, and the S3 is opening, the light E is in the dark state; when the S1 is closing, the S2 and S3 are opening, the light E is in the darkest state; if S1 open, the light E will turn off. L can be used as the inductance of the 20～40W fluorescent ballast, the power of E can not exceed 60W.



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