volume amplifier

First, turn volume on the amplifier.

首先, 请转小放大器上的音量.

Expounds the principle of audio frequency power amplifier is designed for manostat, preamplifier, volume control, power amplifier four parts digital power amplifier megaphone.

论述了音频缩小的原理，设计了以稳压电源、前置缩小、音量调理、功率缩小四局部组成的数字功率缩小扩音器。

If howling occurs, reposition the speakers or turn down the volume on the amplifier.

如果发生啸声,请重新配置扬声器,或转小放大器的音量.

Finally, the author analyzes the possibility to cut down power waste of amplifier further, improve the efficiency and reliability, decrease the volume of power amplifier.

最后，分析了进一步降低功率放大器的功耗、提高效率、提高可靠性，减小功放体积的可能性。

In the part of switch volume regulating, the power amplifier is worked at switch-state, which can increase the efficiency of high-power amplifier and decrease volume of radiator, consequently decrease volume of the alarm.

在音量调节方面采用开关音量调节技术，不管输出多大的功率，功率放大器始终工作在开关状态，从而提高功率放大器的效率，大大减小散热片的体积，有利于缩小报警器的体积。