Thursday, July 5, 2012

                 This circuit can serve the pumping motor for 5-6sec when the push button was closed. This is a good thing of this circuit. so we can use it for decoration purposes. I made it for pouring milk and water on lord ganapathi head when somebody placed 5Rs/- coin in a money box.

 Working:- It is a Monotable Multivibrator circuit. The components R3 and C3 provides the Triggering to the IC555 timer. The push button is located at the coin entry level. so when somebody placed a coin the coin box it touches the push button. so that it can activate the triggering circuit. C3 and R3 provides the output pulse duration.