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《Journal of Electrical & Electronic Education》 2008-03
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Design of Lighting Circuit for Solar Energy Courtyard-Light

CHEN Min-feng,HAO Wei-dong,LI Jing,CHEN Liang (Robot Development Center,Guilin University of Electronic Technology,Guilin 541004,China)  
Solar energy is a kind of green power,which has a wide application foreground in lighting field.There are many kinds of products,such as lawn lantern,courtyard-light,reading lamp and decorative lamp of city.The lighting circuit presented in this paper is divided into four parts.Three parts use operation amplifiers to construct three voltage comparators,and can achieve aim to optical control,time control,overcharge protection and under-voltage protection respectively.In optically controlled circuit,solar energy photovoltaic batteries are used as photo detectors,which can simplify the circuit.Therefore,this circuit has good function of overcharge protection and under-voltage protection for storage battery,optical controlled switch,timing control illumination.
【CateGory Index】: TM914.4
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