The power of the modulated carrier wave is increased by the RF power amplifier. 射頻功率放大器增加了調變載波的功率。
Actuation of one clutch provides positive torque to the final drive, the capstan acting as the main power amplifier. 一個(gè)離合器的作用是給最后一級傳動(dòng)機構,即作為主功率放大器的絞盤(pán),提供正向力矩。