help on the working principle of siren

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#1 21663345 08 Aug 2012 16:53

Toni Wonda Toni Wonda

Anonymous

Post #1
21663345 08 Aug 2012 16:53

pls i need explanation on the working operation of siren, Thanks
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#2 21663346 09 Aug 2012 05:26

David Adams David Adams

Anonymous

Post #2
21663346 09 Aug 2012 05:26

there are all kinds of sirens but lets start off with the basic design. A siren is nothing more than a audio osc and an audio amplifier. Now if you want the frequency of the siren to change ( warble) now you need to modify the oscillator - make it a VFO - variable frequency oscillator. This is the basic siren now all you need is imagination to for all those special effects
#3 21663347 15 Aug 2012 07:35

Peter Evenhuis Peter Evenhuis

Anonymous

Post #3
21663347 15 Aug 2012 07:35

And if you want it very simple.
Take a microphone close by a loudspeaker.
And you can great a simple noisy feedback.
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