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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.

  • 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.

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  1. O

    Amplifier for 4 piezo mics to 4 mono speakers

    Hello! I am an absolute beginner learning electronics by working my way through the Make:Electronics book by Charles Platt. I have a long way to go, so I am hoping someone can give me some guidance on a project I am working on now. I would like to have 4 small piezo microphones independently...

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