Light-control electric toy circuit

Published:2011/7/28 1:31:00 Author:Nicole | Keyword: electric toy | From:SeekIC

The light of flashlight aims at phototube, then CMOS logic circuit which adopts battery as power supply will occur switch action to turn on/off the motor of model train or other electric toys. To most small motor, the transistor can use 2N2222A; but the larger motors need power transistor. When using highlightflashlight, to add a baffle to lens to limit the width of light beam, then only one of phototubes will be shone. PS1 and PS2 represent the on/off state of circuit. R1~R4 resistance should be selected, only the matching phototube is shone, this gate will change its logic state.



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