首页>
外国专利>
Telephone switchboard and electronic device for providing power to load having different resistance values at different operation modes
Telephone switchboard and electronic device for providing power to load having different resistance values at different operation modes
展开▼
机译:在不同的操作模式下向具有不同电阻值的负载供电的电话总机和电子设备
展开▼
页面导航
摘要
著录项
相似文献
摘要
A telephone switchboard provides various operating voltages to a telephone in different operation modes. The telephone switchboard includes a control unit, an output control circuit and a voltage converter. The control unit detects the operation mode of a telephone and generates control signals to the output control unit. The output control unit controls direction of current flowing through the telephone according to the control signal, and generates a feedback signal according to any change in the operation mode of the telephone. The voltage converter receives the feedback signal and converts the received power to a suitable output operation voltage according to the feedback signal. The telephone switchboard is capable of providing various operation voltages to the telephone in the different operation modes.
展开▼