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 deliver a high output at pin 3 to ...

The circuit was created for the purpose of providing timing capability to turn OFF the amplifier as it becomes idle a specified amount of time. 7812 – 3-terminal 1A positive voltage regulator with ...