A battery voltage is increased in a converter and is input to an inverter that supplies a motor with a motor drive current. The network has one or more mobile terminals having a memory with saved file information and a central database containing information to be updated. The epitaxially grown silicon comprises at least one of carbon, germanium, and oxygen present at a total concentration of no greater than 1 atomic percent. The queue manager then queries a customer database to determine which operators previously communicated with the user and the nature of the information previously requested.