To any one who desires to acquire a good practical knowledge of the art of telephony we can recommend this book. In order to get the full benefit from it, however, he should first study a good ...

This circuit was designed to detect when a call is incoming in a cellular phone (even when the calling tone of the device is switched-off) by means of a flashing LED. The device must be placed a few ...

Here is an ideal Mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. Here is an ideal Mobile charger using 1.5 volt pen cells to charge mobile phone while traveling. It can ...

Ever found yourself tangled in a mess of wires and components, struggling to create a clear and intuitive wiring diagram? If so, you’re not alone. Many electronics enthusiasts face this challenge, ...