Showing posts with label siren. Show all posts
Showing posts with label siren. Show all posts
Wednesday, September 10, 2014
Police siren
This schema generate the sound of American police siren.We have used famous NE 555 IC for this.you can operate this schema with DC 12v power.
Tuesday, August 26, 2014
2 Transistor Electronic Siren Wiring diagram Schematic
This is the electronic siren schematic diagram which used 2 transistor BC547 and BC557. The siren is powered by 9V battery or power supply adapter and use 8 ohm speaker to produce the sound. The siren is controlled by the touch plate switch. If you touch the plate, then this electronic siren will be activated.
2 Transistor Electronic Siren Circuit Diagram
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