摘要
本课题设计了一个基于模拟乘法器的线圈阻抗测试仪。该测试仪包括信号产生部分、移相部分和数字显示部分,分别完成了信号的产生及其频率、相位的预置。通过正弦发生器产生一定频率和幅值的正弦信号,再分别经过压控电流源和90°移相器后,输入模拟乘法器中,从而输出电压值,并通过LED显示器显示出来。
A coil and impedance tester based on analog multiplier is designed which including completed signal creation,its frequencies of the signal respectively,and phase to finish signal creation and frequency phase preset in this paper.Through the sine wave generator creating certain frequency with a worth sine signal,then distinguish has been pressed to voltage-controlled current source and 90 degree phase shifter,then input into the analog multiplier,then can output the electric voltage value,counteract LED display manifestation come out.
出处
《铜业工程》
CAS
2011年第2期70-72,共3页
Copper Engineering
关键词
正弦信号发生器
模拟乘法器
移相器
测试仪
功率因素
sinusoidal signal generator
analogue multiplier
phase shifter
tester
power factor
