Help, i need an alarm sound

[sushyoshi]

Hii
I dont know if this forum is appropriate for this but i was looking for a simple circuit, with simple components like transistors no produce just a single sound to connect to a small speaker to then later connect it to an alarm system.
can anyone help me out? its just something small and simple just to make any sound.

any recommendations?

[squidsquad]

Search some online electronic supply stores.  They often have little pizo speakers...or even pre-made circuits that are small & cheap & do this.

[Paul Perry (Frostwave)]

http://www.doctronics.co.uk/555.htm \half way down the page tehre is a "police siren effect" usign a pair of 555 timers.

Search google for 555 alarm, you will get zillions of simple circuits.

But I personally would try hacking one of those children's noise makers. Nothing more alarming than a phaser on STUNSTUNSTUNSTUNSTUN.

[Isaiah]

Maybe search Google for 'Dub Siren schematics'