说明：  互阻抗放大器用于将低位的光电二极管电流转换为可用的电压信号。根据经验，放大器通常必须经过补偿才能正常操作。如果您查看了涉及的所有元件，就比较容易理解这一点。
(Transimpedance amplifier is used to low photodiode current into a voltage signal available. According to experience, usually must be compensated amplifier to normal operation. If you looked at all the components involved, it is easier to understand this point.)