Automatic timing water supply control circuit

Circuit working principle: IC 1 is a digital integrated circuit CD4060. R1, R2, C1 and
the NOT gate inside CD4060 form an RC oscillator. The oscillation period is t≈2.2R2C1≈7.03 s.
When the signal generated by the oscillator accumulates to 1024 times, that is, 7.03 (s) xl 024-2 h
, Ql outputs a high level to trigger IC2 and change the working state. At the same time, Ic resets and
counts again, achieving the purpose of supplying water for 2 hours every 2 hours. Press S once, IC2 is set
, and water can be supplied immediately. Closed S:, water can be supplied for a long time. Press S3 once, IC : is
reset, and the water can be stopped immediately. Close S. , the water can be cut off for a long time. LED is used to show
whether the circuit is working normally, and LED z is used to show the working status. If the circuit encounters a power outage during operation
, the battery will automatically supply power, and the circuit will still count to ensure the regularity of the power supply time
.