We can use series RC circuit and voltage comparator to generate
a time delay. Two resistors R2 and R3 are used as a voltage divider
which applies about two-thirds of the Vcc voltage to the positive
comparator input The delay time after the Vin change form low to
high will be around one time constant
a time delay. Two resistors R2 and R3 are used as a voltage divider
which applies about two-thirds of the Vcc voltage to the positive
comparator input The delay time after the Vin change form low to
high will be around one time constant
Time constant = R1C1 = 100K * 10uF = 1 seconds.
The delay time can be adjust by adjusting R1 or change C1
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