and has a wide frequency range. The oscillator frequency of the circuit is adjusted with the components connected with pin 9, 10 and 11. The second part of the circuit is a 555 alarm circuit. The sound of the alarm can be adjusted with the 1K variable resistor.
The operating voltage of the circuit is 9V to 12V DC and the standby current consumption of the IC is very low. The timing cycle can be adjusted with the 1M variable resistor, the timing cycle of the circuit can also be determined by changing the values of components at pin 9, 10 and 11. For example by increasing the value of the 470nF capacitor can further increase the timing cycle.
Here is the project of a simple timer with alarm circuit using a CD4060 IC. The circuit can be adjusted to provide timing cycle of 1 minute to many hours. It is divided in two parts the first part of the circuit is built around a CD4046 CMOS 14 stage binary counter IC. The IC contains a built in oscillator that is stable