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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.

reverse polarity switch

  1. K

    Reverse polarity switch hooked to timer switch -help for novice

    I know this is probably very basic, so I apologize up front for my lack of knowledge. I am planning on building a small sliding door (for a chicken coop) that will be moved up and down via use of a power antenna attached to the door. When power is applied to the antenna, the door will open...

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