positive feedback amplifier的意思|示意

In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system.

在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。

The article analyzes the frequency characteristics of RC series parallel circuits and the symmetrical circuits, through studying the effectiveness of the positive-negative feedback to the amplifier.

从正、负反馈对放大器性能影响出发，分析RC串、并联电路及其对偶电路的频率特性。