与一些音量控制置于输入端的电路不同，这个前级放大器的特征噪声能够随同信号一起衰减。
Any noise characteristic of the preamp circuit is attenuated along with the signal, unlike circuits where the volume control is before the input.
本文对固态线性功率放大器的研制包括：前级放大器的研制、驱动级放大器的研制、末级放大器的研制。
There are three development for the Middle Power Amplifier : the first stage power amplifier, the drive stage power amplifier and the last stage power amplifier .
微波、毫米波系统的噪声系数基本上取决于前级放大器的噪声系数，所以低噪声放大器是接收系统中相当重要的部件。
The noise figure of a microwave or millimeter-wave system basically lies on the noise of the front amplifier, so the Low Noise Amplifier (LNA) plays critical role for the receiving system.
梯度放大器是核磁共振成像(MRI)系统的核心设备之一，它根据前级控制系统传来的指令，向梯度线圈提供特定波形的电流脉冲。
The gradient amplifier is an essential equipment of Magnetic Resonance Imaging system (MRI). It supplies the gradient coils with pulse currents according to the signal from the control system.
该分布式电源系统采用高频母线形式，原边电路采用双管正激电路，电压前馈控制，后级利用磁放大器精确控制。
The primary circuit has the form of double switch forward of feedforward control, the second circuit used the magnetic amplifier as the post regulator.
本文研究单级铒镱共掺光纤放大器，采用前向侧面泵浦技术。
This paper studies the single-stage Erbium-ytterbium co-doped fiber amplifier, using the forward side-pumping technology.
本文研究单级铒镱共掺光纤放大器，采用前向侧面泵浦技术。
This paper studies the single-stage Erbium-ytterbium co-doped fiber amplifier, using the forward side-pumping technology.
应用推荐