您要查找的是不是：
- DUM SERIES OF INTELLIGENT HIGH FREQUENCY SWITCHING COMMUNICATION POWER SUPP. DUM系列智能高频开关通信电源。
- Intelligent High Frequency Switch DC Operate Power 智能型高频开关直流操作电源
- high frequency switch communication power supply 通信高频开关电源
- rectifier with high frequency Switch 高频开关整流嚣
- high frequency switch power supply 高频开关电源
- There are two innovative ideas in this thesis: one is to use switchable inductor used for the frequency switching. 在成本的考量上，如果我们可以整合两种不同频带的震荡器在单一晶片上，我们可以有效减少晶片面积消耗和降低成本。
- It is excellent in frequency accuracy, frequency stability, frequency resolution, fast frequency switching speed and multiple modulated types. 该信号发生器具有输出频率准确、频率稳定度高、频率分辨率高、频率转换速度快、产生调制信号种类多和杂散抑制良好等特点。
- Automating the test process and improving test efficiency demands integrating RF/microwave and low frequency switching systems into the test system. 为了使测试过程自动化并提高测试效率，就需要将RF/微波和低频切换系统集成到系统中。
- A Small signal model set up through the aid of state space average method can do a world of good for Conducting high frequency Switching Power supply stable analysis. 推证出用状态空间平均法建立小信号模型对高频开关电源进行稳定性分析的方法。
- Choice of High Frequency Switch Power Supply in Railway 铁路用高频开关电源电容器的选择
- Frequency switch between The headset and the handset audio 耳机和手机音频切换
- Practice of High Frequency Switch Power Supply Engineering 高频开关电源系统工程实践
- He varied the transmission frequency. 他变换了无线电传送的频率。
- The monte carlo analysis is used to analyze high frequency switching power loss when some errors of components occur ,which offers a scientific criterion to definite precision range of the component parameters. 当元器件存在一定误差时,为分析其在高频时对开关管功率损耗的影响,进行了蒙托卡诺分析,为确定元件参数的误差范围提供了科学的依据。
- EMI Problem and EMC in Power Supply of High Frequency Switch 高频开关电源中的电磁干扰(EMI)问题及电磁兼容(EMC)
- A unit of frequency equal to one cycle per second. 赫兹频率的单位，等于每秒一周
- Referring to high frequency switching power supply, the power losses mainly concentrate on the rectifier diodes in the secondary side and the MOSFET in the primary side during turn-on and turn-off. 对于高频切换式电源转换器来说，功?损耗大部分集中在二次侧二极体整?器以及一次侧功?晶体导通和截止之切换期间。
- Fatal accidents have decreased in frequency over recent years. 近年来死亡事故发生的频率已经下降。
- We can often correlate age with frequency of illness. 年龄的大小往往与发病率有关。
