公开(公告)号：US20060261889A1

公开(公告)日：2006-11-23

申请号：US11437316

申请日：2006-05-18

申请人： Roberto Giovannotto

发明人： Roberto Giovannotto

IPC分类号： H03F15/00

CPC分类号： H03F1/565 ,  H03F3/181 ,  H03F2200/03 ,  H03F2200/541

摘要： A system and method for employing variable magnetic flux bias in an amplifier. The amplifier system comprises an output transformer and a magnetic sensor configured to sense a first magnetic flux of the output transformer. The magnetic sensor generates a flux signal responsive to the first magnetic flux. Control circuitry is configured to receive the flux signal and to generate a control signal responsive to the flux signal. A winding is configured to receive the control signal and to induce a second magnetic flux within the output transformer responsive to the control signal, the second magnetic flux having opposite polarity to the first magnetic flux. The second magnetic flux may maintain a non-zero quiescent magnetic bias level within the output transformer, or may substantially cancel or null the DC and low-frequency subsonic components of the first magnetic flux.

摘要翻译： 一种用于在放大器中采用可变磁通量偏置的系统和方法。 放大器系统包括输出变压器和被配置为感测输出变压器的第一磁通量的磁传感器。 磁传感器响应于第一磁通量产生通量信号。 控制电路被配置为接收通量信号并响应于通量信号产生控制信号。 绕组被配置为接收控制信号并且响应于控制信号而在输出变压器内引起第二磁通量，第二磁通量具有与第一磁通量相反的极性。 第二磁通量可以在输出变压器内保持非零静态磁偏置电平，或者可以基本上消除或消除第一磁通的DC和低频亚音速分量。