UM3561 Police, Fire Engine, Ambulance and Machine Gun Sirens
This UM3561 Police, Fire Engine, Ambulance and Machine Gun Sirens circuit diagram is based on a specialized IC UM3561, which is a low power CMOS LSI specially designed for this type of applications. The UM3561 siren alarm contains all needed parts ( oscillator , selector circuits , programmed mask ROM ) to simulate siren sound using few external components.
The siren circuit require a power supply circuit around 3 volts and has a low current. The UM3561 siren sound generator circuit has possibility to generate four types of sounds : police siren, fire engine siren, ambulance siren and machine gun sound.
The transistor used in this project must be 2SC9013 , 2SC8050 or similar type.
The speaker used at the output must have 8 ohms impedance and a 0.2 watts power.
GAMBAR
18th November 2011
Rangkaian Elektronika - electronicsuite.com
