XCA的音标

In this paper, the circuit for getting rid of 90 °& 180 ° impulse from Spn Echo Spectrometer is designed, The circuit apply to detect weak Spin Echo Signal together with Boxcar Integrator and Spin Echo Spectrometer, and improved dynamic range greatly.

设计了除去自旋回波谱仪输出的90°脉冲信号电路，该电路的设计可实现利用Boxcar积分器和自旋回波谱仪测量微弱的自旋回波信号，较大地提高Boxcar积分器的输入动态范围。

Secondly detection technique of weak fluorescence was studied and double detection circuit which comprise of PMT, PIN detector, the circuit of signal amplified, the circuit of low-pass filter and Boxcar integrator was designed.

其次，研究了微弱荧光信号的检测技术，设计了由光电倍增管和PIN探测器，前置放大电路、滤波电路，Boxcar取样积分器组成的双通道检测电路，完成了对背景噪声中微弱荧光信号的提取。

It consists of a Boxcar integrator, a latch, a pulse-width modulatior and a signal control circuit.

它由Boxcar积分器，锁存器，脉冲宽度调制器和控制信号电路组成。