400w

Research of solar energy electronic ballast for 400W high pressure sodium lamp

400W太阳能高压钠灯电子镇流器的研制

The average power is not less than 400W ;

平均功率不小于400W（瓦）；

In the market of power switch , converters under 400W take up most of the share .

在开关电源市场中，400W以下的电源大约占了市场的70-80%。

400W Digital PFC Boost Converter Controlled by A Microcontroller

用微控制器控制的400W数字PFC升压变换器

The threshold power is about 400W .

激光阈值功率约为400W。

Use a motor of 4P , 400W .

请使用4p、400W的马达。

When such banana masses were treated by 400W of microwave , their complete deactivating time were 45 seconds .

在微波400W的处理下，等质量不同厚度香蕉片该酶完全钝化的时间为45s。

In this paper , a blade for 400W Small Horizontal Axis Wind Turbine is designed according to the traditional design procedure and the 3D geometrical model is also created .

本文根据传统的叶片设计方法设计了400W小型水平轴风力机叶片，生成了三维几何模型。

The best conditions of microwave extraction are power 400w , time 60s , and the amount of oleoresin is 22.54mg/g ( tomato powder ) .

微波萃取的最佳工艺条件：功率400w，萃取时间50s，番茄红素提取量23.25mg/g（干燥番茄粉末）。

A 400W experimental circuit is built and the experimental results showed that the active power factor corrector can work well with the power factor of 0.99 in the wide input voltage range of AC 90 ~ 260V .

实验结果表明，该校正器在宽输入电压范围（90～260V）下能够正常工作，功率因数达到0.99。

The critical values were dependent on microwave power , when the mass fractions were 9 % , 7 % and 3 % respectively , the powers were corresponding to 100W , 200W and 400W .

该临界值和作用微波的功率有关，当微波功率为100W时，临界炭黑的质量分数为9%，200W时为7%，400W时为3%。

Then 2-ethylhexyl p-methoxy cinnamate was synthesized by esterification under microwave irradiation with p-toluene sulphonic acid as catalyst , while microwave power was 320 ~ 400W and time of irradiation was 40 min , the yield was 85 % .

再以对甲苯磺酸为催化剂，用微波辐射技术，经酯化反应得对甲氧基肉桂酸2-乙基己酯，微波功率320W～400W，辐射40min，产率为85%。

The article puts forward the innovative thought on this question , use the photoelectrical coupler to isolate coupling , utilize the fine characteristic of the photoelectrical coupler and advantage of BTL circuit 's great power output , under the output power of 400W , nearly replay the sound undistortedly .

本设计采用光电耦合器隔离耦合，利用其优良特性和BTL电路大功率输出优点设计的音频功率放大器，在400W的输出功率下，几乎能不失真地重放声音。