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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

working of an electrical alarm

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sudhansu

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hello sir,
how does an alarm in the clock work?what r the difference between electrical &mechanical alarm?
sudhansu
 
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