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When the system is at work, IF output power is achieved through adjusting inverter trigger angular frequency, which can always make the power out put be in the biggest state . Through the effect of the voltage and current closed-loop ,IF power achieve constant power output.

由于系统在工作时,中频电源的输出功率是通过调节逆变触发角频率来实现的,这样就可以始终使输出的功率处于给定的最大状态,并且通过电压和电流闭环作用,使中频电源达到恒功率输出。

The television power supply demands low ripple voltage, and the passive RC buffer circuit used in television before, decreased the power effect.

电视机电源要求非常低的纹波电压,过去电视机所采用的是大的无源RC缓冲电路,使电视机的电源效率比较低下。

Now the company's main business has: AC-DC, AC-AC, voltage converters, choke, inductor coil, filters, transformers, power transformers, all types of special transformers, the total frequency, high-frequency transformers and various types of switching power supply, etc.; and in the domestic set up a sound distribution network of electronic components.

现公司的主要经营项目有:AC-DC 、 AC-AC,电压转换器、扼流圈、电感线圈、滤波器、互感器、电源变压器、各类特种变压器,共频、高频变压器及各类开关电源等;并在国内建立了完善的电子元器件分销网络。

When numberical reading of the voltmeter is available, the power of each phase can be measured through the alternation switch of the voltmeter.

电源部分接有电压表,当控制台有电压读数以后,可通过电压转换开关1HK测量各相的电。

The output voltage of power supply is AC sinusoidal wave. When the sinusoidal peak-to-peak applied voltage is about 9kV and its frequency is about 10kHz, the APSGD will appear, and the luminescence thickness of plasma is less than 1mm. This experiment result agrees well with the calculated results.

实验中电源输出的电压波形为交流正弦波,在峰-峰值电压为9kV时发生沿面辉光放电的电压频率为10kHz,同时等离子体发光厚度低于1mm,上述实验结果较好得验证了理论计算的结果。

A power transformer also produces a secondary voltage directly proportional to its primary voltage; the difference between a potential transformer ang a power transformer is that the potential transformer and a power transformer is that the potential transformer is designed to handle only a very small current.

同时生产的电力变压器二次电压成正比,其主要电压;之间的潜在昂一电力变压器变压器不同的是,潜在的变压器和电源变压器的是,电压互感器的设计处理只有一个很小的电流。

MSP430F169 microcontroller was the core components of control and measurement function of an electromagnetic relay characteristic parameter tester. The tester also included DC power module, power amplifier module, constant current source module, keys, and digital tube display module. The tester could test the data of 943-1C-12DS electromagnetic relays including the minimum pull-in voltage, maximum release voltage, relay coil voltage rating when the pull-contact time, release time as well as the contact value of the contact resistance. The system could complete automatic measurement parameters to achieve all the basic requirements of design. And all of the test data was displayed through the 74HC573 digital tube.

摘 要:以MSP430F169单片机作为控制和测量的核心部件,辅以直流稳压电源模块、功率放大电路模块、恒流源模块、按键和数码管显示模块等组成一个电磁式继电器特性参数测试仪,完成对943-1C-12DS电磁式继电器最小吸合电压、最大释放电压、继电器线圈电压为额定值时的触点吸合时间、释放时间以及触点接触电阻值的测试,该系统能够实现成套参数自动测量,所有测试数据通过74HC573数码管进行显示。

Considering the shortage of voltage sensitivity in small source impedance ratio systems and with high resistance earth fault, the voltage fault component is replaced by memory voltage component to determine the fault's direction.

针对无穷大电源系统中和经高阻接地时存在的电压灵敏度不足的问题,采用保护安装处的记忆电压代替其电压故障分量,从而使保护可以可靠地判别出故障的方向。

An injection type shunt hybrid active power filter was analyzed, it can suppress harmonic currents and compensate high capacity reactive power, nevertheless, a sharp boosting on DC-side voltage was found in application. Based on the analyses of the reasons, different solutions was proposed such as adoption of main circuit of multiple performances, the use of hysteretic control method, fore-feed control of reflowing current or direct control on DC-side voltage without a rectifier to supply.

研究一种兼具大容量无功补偿能力的注入式并联混合有源滤波器,并分析其在工程应用中发现的直流侧电压抬升现象及这种现象产生的原因,在此基础上提出从采用多重化主电路结构、滞环控制法、回灌电流前馈控制法和脱离整流电源直接对直流侧电压进行控制等几个方面来抑制直流侧电压抬升的方法。

The higher surface energy of substrate results in higher effective viscosity and thicker ordered molecular film.

从侧面证明了有序液体模型的正确性,即薄膜润滑的成膜性能与近固体表面润滑剂分子的有序度密切相关;足够大的外电压使无序流体膜有序化,生成较高的有效粘度和较厚的油膜,并且二者随着外电压的增加,逐渐趋于稳定;外电场作用下,摩擦系数增大,切断电源后,摩擦系数减小,但不能恢复到未加电压前的摩擦系数值。

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I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时,滚道或滚动元件褪色是很常见的特征。

The lawyer's case blew up because he had no proof.

律师的辩护失败,因为他没有证据。