For convenience of loading, a variablevoltage electric generator is used in it, which can save electric energy more than 60 percent.
由于采用调压发电机，使之加载方便灵活，且能达到节能60%以上。
2
It consists of a variable-gain cell based on a current-steering structure, a novel wide-range exponential voltagegenerator, and a stage of a fixed-gain amplifier.