After Touch The Push Button, Delay The Time Duration

 Time Delay Relay Circuit

This circuit Delay the time, When You Push the push Switch then the led start glow and after some time Led / load Automatic Turns Off, The duration of the load is depend on your capacitor micro farad, if the micro farad is low value then the duration of your load is minimum, while verry the value of capacitor you can control the delay.

Components-

-5v Relay

-Push Switch

-10k Ohm Resistance

-35v 220 Microfarad Capacitor

-BC 547 NPN Transistor

-9v Battery

-Bulb with Bulb Holder

-Some Wire

Circuit Diagram-

Time delay relay circuit, delay on off circuit, circuit diagram,