Abstract: Based on the GSM/GPS module, the article designs and implements a new type of network car anti-theft system. The system uses GPS positioning technology to obtain the position of the vehicle, uses the sensor to determine whether the vehicle is abnormal, and uses the GSM ne…

The power grid supplies AC power to users, and various radios require DC power. Rectification is the process of turning AC power into DC power. By using a device having unidirectional conduction characteristics, a current alternating in direction and size can be conver…