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1. 发明申请

US20150270810A1 AUDIO POWER AMPLIFIER 有权
标题翻译：音频功率放大器
公开(公告)号：US20150270810A1
公开(公告)日：2015-09-24
申请号：US14222663
申请日：2014-03-23
申请人： INNOVATIVE ELECTRONIC DESIGNS, LLC
发明人： Hardison G. Martin , Robert A. Ponto
IPC分类号： H03F1/02 , H03F3/21 , H03F3/185
CPC分类号： H03F1/0233 , H03F3/085 , H03F3/185 , H03F3/21 , H03F3/217 , H03F3/68 , H03F2200/03 , H03F2200/165 , H03F2200/444 , H03F2200/541
摘要： Improvements to U.S. Pat. No. 5,428,642 including use of a single clock providing a first frequency to drive a power supply and a second frequency, twice the first frequency, to dual channel pulse width modulators and audio amplifiers. The power supply is improved to provide enough output voltage that the amplifier stays below 90% modulation and the first frequency driver eliminates the dead band, thereby improving efficiency. Current limiting, even against shorts in the load, is provided by inductor inputs to the clipper circuits, where the inductors are in the magnetic fields of the output chokes. The audio amplifiers are isolated by optical couplers for the audio signal and by an optical coupler and isolation transformers for the clock. One clock amplifier supplies both amplifier channels. The pulse width modulator uses the optically isolated clock and receives clipped audio directly. Two channels fit in the space of one old channel.
摘要翻译：美国专利的改进包括使用提供第一频率的单个时钟来驱动电源和第二频率（第一频率的两倍）到双通道脉宽调制器和音频放大器。改善电源以提供足够的输出电压，放大器保持低于90％的调制，第一个频率驱动器消除死区，从而提高效率。电流限制，即使是负载短路，由电感器输入提供给限幅电路，其中电感器处于输出扼流圈的磁场中。音频放大器由用于音频信号的光耦合器和用于时钟的光耦合器和隔离变压器隔离。一个时钟放大器提供两个放大器通道。脉宽调制器使用光隔离时钟直接接收限幅音频。两个通道适合一个旧通道的空间。

2. 发明授权

US09190960B2 Audio power amplifier 有权
标题翻译：音频功率放大器
公开(公告)号：US09190960B2
公开(公告)日：2015-11-17
申请号：US14222663
申请日：2014-03-23
申请人： INNOVATIVE ELECTRONIC DESIGNS, LLC
发明人： Hardison G. Martin , Robert A. Ponto
IPC分类号： H03F3/38 , H03F1/02 , H03F3/185 , H03F3/21
CPC分类号： H03F1/0233 , H03F3/085 , H03F3/185 , H03F3/21 , H03F3/217 , H03F3/68 , H03F2200/03 , H03F2200/165 , H03F2200/444 , H03F2200/541
摘要： Improvements to U.S. Pat. No. 5,428,642 including use of a single clock providing a first frequency to drive a power supply and a second frequency, twice the first frequency, to dual channel pulse width modulators and audio amplifiers. The power supply is improved to provide enough output voltage that the amplifier stays below 90% modulation and the first frequency driver eliminates the dead band, thereby improving efficiency. Current limiting, even against shorts in the load, is provided by inductor inputs to the clipper circuits, where the inductors are in the magnetic fields of the output chokes. The audio amplifiers are isolated by optical couplers for the audio signal and by an optical coupler and isolation transformers for the clock. One clock amplifier supplies both amplifier channels. The pulse width modulator uses the optically isolated clock and receives clipped audio directly. Two channels fit in the space of one old channel.
摘要翻译：美国专利的改进包括使用提供第一频率的单个时钟来驱动电源和第二频率（第一频率的两倍）到双通道脉宽调制器和音频放大器。改善电源以提供足够的输出电压，放大器保持低于90％的调制，第一个频率驱动器消除死区，从而提高效率。电流限制，即使是负载短路，由电感器输入提供给限幅电路，其中电感器处于输出扼流圈的磁场中。音频放大器由用于音频信号的光耦合器和用于时钟的光耦合器和隔离变压器隔离。一个时钟放大器提供两个放大器通道。脉宽调制器使用光隔离时钟直接接收限幅音频。两个通道适合一个旧通道的空间。

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