【摘要】 分析了磁调制式直流放大器的传递函数 ,对系统的稳定性进行了讨论 ,给出了系统稳定应满足的条件 ,并介绍了保证系统稳定的补偿方法。对放大器的频带宽度、响应时间、输入阻抗、电压增益和运算误差等动态参数进行了分析计算。磁调制式直流放大器的特点是开环输入电阻较低 ,这样有利于提高放大器灵敏度和信噪比。更多还原

【Abstract】 The stability of system and transmission function of the DC amplifier using a magnetic modulator is mainly discussed in this paper, and the compensation method and conditions of the stableness of the system are given. The bandwidth, response time, input resistance, voltage gain and operation error for the DC amplifier are presented. The amplifier has a characteristic of low resistance with open loop, which helps to improve the sensitivity and signal noise ratio.更多还原