Category:Electromechanical Sirens: Difference between revisions

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(Created page, quick blurb about how they work)
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Revision as of 02:24, 13 December 2013

Electromechanical sirens generally use a cylindrical, slotted rotor inside of a similar stator. The rotor spins inside the nonmoving stator, causing air to be forced out like a squirrel cage blower. The slots are alternately blocked and opened as the rotor spins, causing vibration and sound.