RISE- Robotics Innovations Society in Engineering

This why your laptop charger has a small cylinder .....

This why your laptop charger has a small cylinder » Technology Vista Even if you are not computer savvy, you must have all used computers at least once in our life time or have seen people using laptops at office or coffee shops. The tiny parts that are assembled in that small case, that makes a truly portable computer, may fascinate you. However, you need to charge…

how is it work ??