A simple LED lighting circuit with Nano silver ink pen

A simple LED lighting circuit is created and demonstrated with a nano silver ink pen. The nano silver ink is formulated by the author a few years ago. The nano silver ink then is used and approved still function working as a conductive materials for many years on the shelf after chemical formulation.This book will describe the ink process of nano silver metal ink and its properties with ink recipe tuning based on the experience of the author founded companies several years ago.