一种用于相移干涉仪的高压放大电路  

High voltage amplifier for phase-shifting interferometer

作　　者：段源鸿 韩森[1,2] 唐寿鸿 卢庆杰[1] 

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093 [2]苏州慧利仪器有限责任公司,苏州215123

出　　处：《电子测量技术》2017年第8期217-220,225,共5页Electronic Measurement Technology

摘　　要：基于自主研制高精度数字化相移干涉仪的需求,针对干涉仪的压电陶瓷移相器设计了一种高压放大电路。通过双极性运算放大器OP07构成低噪声,非斩波稳零的低压放大电路与中功率线性三极管MJE340和MJE350构成高压放大电路进行直流耦合,结合反馈网络,功率放大电路,滤波电路以及限流保护电路,将计算机输出的0~5V低电压的移相控制信号稳定线性放大到-30V^+130V范围,且输出低至10mV峰值的纹波,满足压电陶瓷移相器的高压驱动控制要求和相移干涉仪的高精度移相测量的要求。This paper designs a high-voltage amplifier suitable for driving piezoelectric actuator based on self-developed high-precision digital phase-shift interferometer. This amplifier adopted the way of DC coupling between low-noise, non-chopper-stabilized low-voltage amplifier circuit and high-voltage amplifier circuit, and combined with feedback network, power amplifier circuit, filter circuit and current limiting protection Circuit. The amplifier circuit is mainly consist of OP07 op-amp and the power transistors （MJE340＆MJE350）. The range of 0 V to 5 V low input voltage produced by the computer is stably amplified into the -30 V to＋ 130 V. Output ripple peak is as low as 10 mV . Thus, the high-voltage amplifier has better stability satisfying the requirements of driving control of the piezoelectric ceramic phase shifter and the high accuracy requirement for the interferometer.

关 键 词：移相干涉仪 压电陶瓷 高压放大电路 运放OP07 功率三极管 

分 类 号：TN710[电子电信—电路与系统]