555 TIMER CIRCUITS

1.LIGHT SENSITIVE ALARM

2.TOUCH SWITCH

3.COURTESY LIGHT

4.CLAP RELAY

5.BLINKING LED CIRCUIT

6.TOUCH ACTIVATED LIGHT

7.AMERICAN POLICE CAR SIREN

8.BRITISH POLICE CAR SIREN

9.PANIC ALARM

10.POLICE SIREN USING NE555