Discover how to build a simple wireless power transfer system at home using readily available components like enameled copper ...

Here are some DIY LDR switch circuits available on our website and the web. LDR switches are used to switch a relay or other device when light are present or absent. LDRs or Light Dependent Resistors ...

The first words to come out of the mouths of most small children -- after "Mama" and "Dada" -- are usually things like "Bye bye" or "Hi." Not my children. Their first words were "outlet" and "doorstop ...