| 摘要 |
A power supply device for a vehicle antenna of the present invention comprises a switching device which receives power of a vehicle antenna; a power supply unit which includes an output node receiving the antenna power according to the switching operations of the switching device and supplying the antenna power to the antenna; and an overcurrent protection unit which controls the switching operation of the switching device, detects a potential level of the output node, and supplies the antenna power to the antenna by turning off the switching device when an overcurrent is detected as the detected potential level is greater than a reference potential level. [Reference numerals] (122) Microcomputer;(130) Display unit;(AA) Power supply B+ |
