基本信息:
- 专利标题： Switching amplifier
- 专利标题（中）：开关放大器
- 申请号：JP2005373860 申请日：2005-12-27
- 公开(公告)号：JP2007180644A 公开(公告)日：2007-07-12
- 发明人： KISHIDA MASAHIRO
- 申请人： Sharp Corp , シャープ株式会社
- 专利权人： Sharp Corp,シャープ株式会社
- 当前专利权人： Sharp Corp,シャープ株式会社
- 优先权： JP2005373860 2005-12-27
- 主分类号： H03F1/30
- IPC分类号： H03F1/30 ; H03F3/217
摘要：
PROBLEM TO BE SOLVED: To provide an inexpensive switching amplifier that is not affected by variations in the voltage of a power supply.
SOLUTION: The switching amplifier includes: a delta-sigma modulation circuit 3 for converting an input signal S
IN to produce a quantization signal S
Q being a PDM signal or a PWM signal; a current amplifier section 11 with a constant current output for applying current amplification to the quantization signal S
Q output from the delta-sigma modulation circuit 3; and a feedback section for feeding back a signal based on the output signal of the current amplifier section 11 to the delta-sigma modulation circuit 3.
COPYRIGHT: (C)2007,JPO&INPIT
摘要（中）：
SOLUTION: The switching amplifier includes: a delta-sigma modulation circuit 3 for converting an input signal S
IN to produce a quantization signal S
Q being a PDM signal or a PWM signal; a current amplifier section 11 with a constant current output for applying current amplification to the quantization signal S
Q output from the delta-sigma modulation circuit 3; and a feedback section for feeding back a signal based on the output signal of the current amplifier section 11 to the delta-sigma modulation circuit 3.
COPYRIGHT: (C)2007,JPO&INPIT
要解决的问题：提供不受电源电压变化影响的便宜的开关放大器。 解决方案：开关放大器包括：Δ-Σ调制电路3，用于转换输入信号S IN ，以产生作为PDM信号的量化信号S SB> /> PWM信号; 具有恒定电流输出的电流放大器部分11，用于向从Δ-Σ调制电路3输出的量化信号S SB SB施加电流放大; 以及反馈部分，用于将基于当前放大器部分11的输出信号的信号反馈到Δ-Σ调制电路3.版权所有：（C）2007，JPO＆INPIT
信息查询:
EspacenetIPC结构图谱:
| H | 电学 |
| --H03 | 基本电子电路 |
| ----H03F | 放大器 |
| ------H03F1/00 | 只用电子管，只用半导体器件或只用未特别指明的器件作为放大元件的放大器的零部件 |
| --------H03F1/30 | .为减少温度变化或电源电压变化的影响对放大器的改进 |