Electronics 2000

Hi all,

Ive got some right bullies at my School, & I want to make a device, that when I put it up to there ear, it gives them a headache!! yes this seems horrible) !! but can a battery device be made, also the sound Output does not need be loud, could one do pressure wave?
Any help thoughts/ideas on this would be really greatful

thanks from
Spitfire666

You can get 105dB piezo electric sounders that require only a battery supply.
However, if you assault somebody as you propose, don't be surprised if you end up in deep trouble.

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