摘要
运算放大器扩展功能,在电子电路设计中其数学模型为放大电路,含移相电容、反馈电阻及输入阻抗。该模型信号频率宽,可实现信号的放大、相加、相减、积分、微分等运算功能。在红外光电反射式传感器电路中和超声波接受电路中,其三极管和低价位运放用TL431替换后,可提高电路稳定性及精度。
In circuit design, the mathematical model of operational amplifier expanded function is expanded circuit. The circuit includes phase electric capacity, the feedback resistance and the input impedance. This signal frequency of this model is wide. The signal enlargement, the summation, the subtractive, the integral, the differential coefficient operation function can be realized in this model. In the infrared photoelectricity reflection sensor electric circuit and the ultrasonic receive circuit, the circuit stability and precision was increased after the triode and the low-end operational amplifier were replaced by TL431.
出处
《兵工自动化》
2006年第5期68-68,73,共2页
Ordnance Industry Automation
