555 Timer Delay Off Circuit Diagram. The above circuit uses a 555 timer U1 in mono stable mode. If once push button is pressed, it drives pin2 of timer momentarily to ground that triggers the 555 to ...

A 4011 Quad 2 Input NAND Gate was used for IC1, but many other CMos gates or inverter arrays can be used in its place, e.g. 4001, 4002, 4025, 4012, 4023, 4049, 4069. With these devices, all inputs ...

Often we need stopwatch to differentiate the time of two events. Here in this tutorial we are going to design a simple digital stopwatch circuit, without using any microcontroller. Here we have used ...

555 Timer IC: Before going into detail of Time Delay Circuit, first we need to learn about 555 Timer IC first. Below you can find the pin diagram of 555 timer IC along with the details of each pin.