IC CD 4033 Counter cum Display driver is used as the lightning sensor cum counter. Its input pin 1 is very sensitive to the electric discharges in the atmosphere. The lightning has 1000s of volts that discharges to earth. The input of IC1 captures the lightning pulses and the output of the IC1 turns high. The Display driver portion of the IC1 converts the signals at the inputs into a Numerical display from 0-9.After 9, it will reset and repeats the counting.
To test the circuit, just click a cooking gas lighter near the circuit. Its spark will trigger the circuit.
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