查询词典 power amplifier

To control stepping motors, the balance bridge power drive circuit is made up by TDA1521 integrated audio power amplifier, the pulse allotter is made up by the parallel ports of computer and latches.

双回转机构的步进电机控制电路由TDA1521音频集成功率放大器组成平衡桥式功率驱动电路，由计算机并行口经过锁存器构成脉冲分配器。

So it is worth to design an audio power amplifier with the features of high power and high efficiency.

因此，设计一种失真度小，输出功率大，效率高的音频功放也有很重要的现实意义。

The control of the lead angle of the motor is studied. The power MOSFETs are used as a power amplifier which adopts a half-bridge circuit.

本文设计了变磁阻电机三相绕组的电流闭环控制系统，并研究了超前角控制问题。

Power amplifier is used in many fields, such as sound amplifier and electric vibration generator.

功率放大器在很多领域都得到了应用，比如音响、电动振动试验台等等。

In the end, the main content of this dissertation is addressed.In chapter 2, based on the analysis of present vibrators principle and structure, two kinds of transfer functions and frequency response curves of the vibrator, driven by voltage feedback power amplifier and current feedback amplifier, are given separately. And turnover frequencies between different frequency rangs are also given.

第二章分析了标准振动台的工作原理和结构，在此基础上，建立了标准振动台的机械和电气方程，给出了恒压源和恒流源功放激励下的振动台传递函数及幅频、相频特性曲线，列出了不同频段间的转折频率。

In the part of alarm volume output, BTL power amplifier is adopted, which can increases power usage and output high-power with the low voltage.

在报警音量输出部分采用BTL方式功率放大器模式，提高电源利用率，在低压下可输出大功率。

H-bridge switching power amplifiers are popular for their high efficiency and large power output.Based on analysis and experiments of mainstream DAA and DAPS, a 10W H-bridge power amplifier circuit is designed with JAZZ 0.5um BCD technology.

本文在分析国内外数字音频功放及后级开关功率放大器现状的基础上，采用JAZZ的0.5umBCD工艺，设计了一种高效率宽功率输出范围的数字音频H桥功率放大电路。

This paper also analyzed the relationship between power efficiency of power amplifier and PAPR, and deduced the closed form formulation of power allocation between superimposing pilot signal and data signal.

在考虑功率放大器转化效率的前提下，分析了功率转化效率与峰均功率比之间的关系，推导了叠加的导频信号与数据信号功率分配的闭环表达关系式。

In order to study the characteristics of pulse amplification in multi-stage cascade ytterbium-doped fiber amplifiers,the three-stage high-gain pulse fiber amplifier with all-fiber structure was experimentally studied based on the master oscillator power amplifier technology.

为了探讨多级级联掺镱光纤放大器的脉冲放大特性，采用主振功率放大技术，实验研究了3级级联、全光纤结构的高增益脉冲激光放大器。

The system consists of phantom, signal source block, power amplifier block, measuring mode setting block, high accuracy amplifier and high speed demodulator.

该系统包括信号源模块，功率放大模块，测量模式设置模块，信号放大模块，同步解调模块。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。