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- DC motor speed to achieve the first to convert AC DC, which requires rectification circuit. 要实现直流电机调速首先要把交流电转换为直流,这就需要整流电路。
- PWM microelectronic c ontrol technique and AC DC AC DC invert technique with MOSFET half bri... 具有短接限流、限时衰减和恒流、恒压相结合的特点。
- In the system,Intel 80C196MC is used as control center and IPM is used as an intelligent power device in the main circuit of AC DC AC voltage type inverter. 该系统以80C196MC为控制核心,采用IPM智能功率模块为功率元件,组成了交?直?交电压型逆变器主回路。
- Violent power oscillation will occur in independent AC DC combined power supply and may hamper the normal operation when the parameters of the generator and the DC motor load do not match. 交直流一体独立发电机系统在发电机和负载参数不满足一定条件时 ,会发生发电机和反电势负载之间的大幅度功率振荡 ,破坏系统的正常工作。
- rolling stock AC-DC changeover method 溢座式交直流切换方法
- A Novel PWM ZVS AC DC Converter with PFC 新颖的含PFC的PWM ZVS AC-DC变换器
- AC DC dual purpose electric motor vehicl 交直两用电车
- Analysis and Design of a 500W AC DC Unity Power Factor Converter 500W 单位功率因数 AC-DC 变换器分析与设计
- The fox went to ground under a rocky escarpment. 狐狸钻进了石崖下面的洞里。
- Do not apply more than 250V(AC or DC) between any input and earth ground. 任何被测试对象对地电压,包括直流和交流,不能超过250V。
- The ground was covered with ferns. 地面上长满了羊齿植物。
- He lifted a pail of water from the ground. 他把一桶水从地上提了起来。
- Rachel who died last week was still above ground. 雷切尔上星期去世,现在还没安葬。
- This car really comes into its own on rough ground. 这辆汽车在颠簸的路上才真正显示出它独特的性能。
- They put some wreathes on the ground. 他们把一些花环放在地上。
- The ground was ploughed and planted with corn. 地翻耕后种上了玉米。
- He takes his ground on intuition. 他的意见是凭直觉。
- We need a mechanical digger to level the ground. 我们需要一台挖掘机来平整土地。
- A good hot summer could dry the ground out. 一个炎热的夏天可以将大地干透。
- Bob pecked at the hard ground with a pickaxe. 鲍勃用鹤嘴锄在坚硬的地面上挖掘。