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Siren circuits

(Factory Siren,Car siren)
Page : 1 « 1 
 
 
 
Factory Siren
This circuit produces a sound similar to a factory siren. It makes use of a 555 timer
(10-Sep-2005)---163

Police Siren
This circuit produces a sound similar to the police siren. It makes use of two 555 timer ICs used as astable multivibrators. The frequency is controlled by the pin 5 of the IC. The first IC (left) is wired to work around 1Hz. The 47uF capacitor i
(26-Sep-2006)---825

Powerful Siren
This circuit was requested by several correspondents. Its purpose was to obtain more power than the siren circuit already available on this website since many years ( One-IC two-tones Siren ) and to avoid the use of ICs. A complementary transistor p
(26-Sep-2006)---826

 
 


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