The traditional transformer is trending towards pocketsize and noiselessly in inverter using high-frequency link technique,but the control circuit becomes difficult to be designed.
The controlled circuit can then connect to other circuits, or to something like a motor, which might increment a count on a gear, like in Hollerith's tabulating machine we talked about last episode.
域，改进控制电路放置非立体
像。
构及其控制电路设计。
回路形成时，我们的大
去做
。
类的东西，它可以增加齿轮的计数，就像上集 Hollerith 的制表
