| 摘要 |
A telecommunications card provided for being connected to a host device, comprising processing means and a power source, said card comprising a bus to which a host interface for communicating with said processing means, control means and an RF section for transmitting and receiving signals are connected, said card being provided for receiving operational power from said power source, said card comprises current limiting means comprising a first input for receiving power from said power source and transmitting said power through a first output to the card, said current limiting means comprising a second input for receiving power from said power source and supplying said power for charging purpose to an auxiliary power source connected to a second output of said current limiting means, said current limiting means being provided for limiting the current retrieved from said power source, said current limiting device being further provided in a first operation mode of said card for supplying operational power from said first output to said card and in a second operation mode of said card, upon request of said RF section for transmission purpose, for supplying power from said first output and from said auxiliary power source in such a manner to deliver a peak power to the RF section. <IMAGE> <IMAGE> |
