Phone busy pointer circuits

Phone circuits are busy pointer. A busy signal is a signal that indicates that someone is trying to call a phone number but could not be con...

Circuit Mobile Phone Battery Charger

This post share about Mobile Phone charger circuits, previously you can see other Phone Battery Charger Circuit    or Charger Circuit  . Thi...

Make A Virtual Phone Battery

Virtual cell phone battery is a replacement cell phone batteries for those of you who use the phone as a modem. Including myself, who use th...