Application of Light Control Cycle Flashing Lantern Circuit

Figure 6-11 shows a flow-through watercolor lamp circuit that can control the nine-way lanterns to change sequentially, automatically change the brightness and direction of the lamp sequence. It can be used for home, children's toys, small ads, shops and other decorative lights.
Circuit principle: Figure 6-11 is the circuit schematic. IC1 is a six-inverter MC14049 integrated circuit. Among them, A1~A5 form a multivibrator, and the oscillation period is adjusted by potentiometer RP, and the adjustment range is between 1~10S. IC2 constitutes a counter for the MC14017. During the daytime, due to the low resistance of the photodiode VD1, the 15 pin of IC2 is at a high potential, and is in a reset state, Q1~Q9 output low potential, the LEDs LED1~LED18 do not display bright light, and the nighttime falling photodiode VD1 is high impedance, 15 The ground potential is penalized, and the clock pulse is sent to the IC2 14 pin. The 9-bit output terminals Q1~Q9 of IC2 sequentially output a high level, and the LEDs LED1~LED18 flash in sequence. After one week from Q1~Q9, after all the lights are off for a while, the cycle starts again.

Light control cycle flashing lights circuit


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