| 摘要 |
Traditional mobile power supply devices for mains-operated equipment, e.g. hammer drills on building sites, have a low unit power. The invention therefore provides such a power supply device in which the energy of an energy source, e.g. of a motor (1), is converted by a generator (6), which generates a current of a higher frequency than is suitable for mains equipment, and the frequency suitable for mains equipment is then produced by a converter (8, 20, 26). <IMAGE> |
