发明名称 |
Regulating device for a telephone loud-speaker |
摘要 |
A fixed impedance load is provided with a signal having a variable frequency F from a line capable of supplying a variable available power. The device comprises a pulse width modulator that operates at frequency F and supplies the load with pulses, the width of which varies in the same way as the available power, so that the consumed power on the line remains lower than the available power.
|
申请公布号 |
US5541543(A) |
申请公布日期 |
1996.07.30 |
申请号 |
US19930010270 |
申请日期 |
1993.01.28 |
申请人 |
SGS-THOMSON MICROELECTRONICS S.A. |
发明人 |
ARNAUD, THIERRY |
分类号 |
H04M1/00;H04M1/60;H04M19/04;H04M19/08;(IPC1-7):H03K7/08;H03K5/01 |
主分类号 |
H04M1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|