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本文介绍一种声光调制器驱动电源.它是在国外PLMD-040驱动电路的基础上作了某些技术性修改制作出来的.这个驱动电源不仅为研制AOMG声调制器提供了实验手段,经过某些改进后,它还可以成为实用的驱动电源.本电路的载频的40兆赫,正弦波调制带宽12兆赫;脉冲调制重复频率啊高可到2兆赫;调制度M>0.90,调制极性和调制度都可控制;已调波输出功率大于3瓦;输出阻抗50欧.制作过程中发现;采用差分放大器结构的双平衡调制器是一种较好的调幅电路;制作宽频带,高线性,中功率高频放大电路对于提高驱动电源的电性能是很重要的.
This article describes a kind of acousto-optic modulator drive power.It is based on the foreign PLMD-040 driver circuit made some technical modifications produced.This drive power not only for the development of AOMG sound modulator provides an experimental means, after a After some improvements, it can also become a practical driving power. The circuit’s carrier frequency of 40 MHz, the sine wave modulation bandwidth of 12 MHz; pulse modulation repetition rate can be high up to 2 MHz; modulation M> 0.90, modulation polarity and Modulation degree can be controlled; has been modulated wave output power greater than 3 watts; output impedance of 50 ohms found in the manufacturing process; using double differential amplifier amplifier balancer is a better amplitude modulation circuit; making broadband, high linearity, Medium-power high-frequency amplifier circuit for improving the electrical performance of the drive power is very important.