发明名称 |
TELEPHONE SWITCHBOARD AND ELECTRONIC DEVICE FOR PROVIDING POWER TO LOAD HAVING DIFFERENT RESISTANCE VALUES AT DIFFERENT OPERATION MODES |
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.
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申请公布号 |
US2013028395(A1) |
申请公布日期 |
2013.01.31 |
申请号 |
US201113283601 |
申请日期 |
2011.10.28 |
申请人 |
HON HAI PRECISION INDUSTRY CO., LTD.;FU TAI HUA INDUSTRY (SHENZHEN) CO., LTD.;HUANG REN-WEN;ZHANG JUN-WEI;CHUANG TSUNG-JEN;WONG SHIH-FANG |
发明人 |
HUANG REN-WEN;ZHANG JUN-WEI;CHUANG TSUNG-JEN;WONG SHIH-FANG |
分类号 |
H04M3/22 |
主分类号 |
H04M3/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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