12 Hour Digital Clock Circuit Diagram Using 555 Timer. The circuits explained here are 10 best small timer circuits using the versatile chip ic 555 which generates predetermined time intervals in response to momentary input triggers. In this article we have handpicked some really useful 555 timer circuits which will be interesting to electronics engineering students and hobbyists alike.
The 555 timer generate clock pulse after a second and output of 555 is connected to pin 1 of ic 4026 which is a seven segment display decade counter which is used to drive a 7 segment display with input clock pulse. The connections are shown below. It also has a potentiometer to adjust the time delay where you can increase of decrease the time delay by just rotating the potentiometer.
Clock circuit using a 555 timer.
The time intervals can be used for keeping a relay controlled load on or activated for the desired amount of time and an automatic switch off once the delay period. The clock circuit that will produce 60hz clock signals using a 555 timer is shown below. The lc meter circuit shown here will measure the value of a reactive element like capacitor or an inductor. It also has a potentiometer to adjust the time delay where you can increase of decrease the time delay by just rotating the potentiometer.
