Teacher assigned duties for the last ten minutes of the school day. Everyone had chores. Teacher made up a list and posted it. It was the duties for an entire week and they rotated from week to week.

AN2316 应用电路改进的 ST7LITE05 交流斩波驱动器解决方案。该应用提出了一种交流电机或负载电路解决方案，与先前发布的应用中讨论的解决方案相比，其效率有所提高。该解决方案的应用场合没有限制，涵盖所有类型的交流异步单相电机应用（例如冰箱、液压泵 ...