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eyes care lamp(2)

2016-08-04 12:35  
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eyes care lamp(2)
This example describes the eyes care lamp with functions like touch-sensitive light and turn off timing,and it can dim the light level according to the intensity of indoor light level automatically.   The principle of circuitThe eyes care lamp circuit is formed by the power circuit, touch/timing control circuit and metering and dimming circuit,which is shown in Figure 1-19   The power circuit is formed by the power switch S,the power transformer T,bridge rectifier UR,filter capacitor C4,current limiting resistor R4 and the power indicative light-emitting diode VL.