一种用于磁共振波谱仪的主动匀场电源设计

刘庭伟, 彭博文, 徐雅洁, 王亚, 王峰, 郁朋, 杨晓冬

A Design of Active Shimming Power Supply for Magnetic Resonance Spectrometers

LIU Tingwei, PENG Bowen, XU Yajie, WANG Ya, WANG Feng, YU Peng, YANG Xiaodong

图4 (a) DAC电压驱动器放大电路；(b)基准电压电路，其中U1为电压转换芯片，电源电压VDD=5 V, VREF为基准电压，C1~C3为滤波电容

Fig. 4 (a) DAC voltage output amplification circuit; (b) Reference voltage circuit, where U1 is the voltage conversion chip, the power supply voltage VDD=5 V, VREF is the reference voltage, and C1~C3 is the filter capacitor