潜油电泵电缆试验方法 recommended practice for testing of electric submersible pumcable systems
潜油电泵电缆系统的应用 recommended practice for application of essubmersible cable systems
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例句与用法
A novel charge pump in pll 锁相环中的新型电荷泵电路
The circuits of pump - up and pump - down are symmetric to overcome the disadvantage of charge / discharge current mismatches 上拉泵电路和下拉泵电路完全对称,能够消除电流失配所带来的噪声。
There are two relatively independent sub - blocks in the system : self - adjusting charge pump and parallel led current control driver 整个电路包括两个相对独立的模块:具有自适应调整功能的电荷泵电路和并联led电流控制电路。
In order to overcome this problem , constructing the high performance charge pump circuits is essential for low voltage analog circuit design 为了解决这个问题,对低压模拟电路来说,设计高性能的电荷泵电路是十分重要的。
To cancel the offset - voltage of the comparator , a switch capacitance circuit is used between the three pre - amplifier stages . the charge pump circuit is used to boost the clock voltage of the switch transistor 采用电荷泵电路提供开关管栅过驱动电压,带隙基准电路作为电荷泵稳定电压的输入,有利于改善开关电路的性能。
In conventional cmos charge pump circuits , the pumping high voltage is limited by mos threshold voltage , so that it can not use less cascade stages to pull up a high voltage which we want to generate 在传统的cmos电荷泵电路中,电荷泵输出的电压受mos管的阈值电压限制,所以当要求电荷泵的输出电压较高时,则不得不连很多阶来达到要求。
Therefore , a four - phase charge pump circuit is invented to surmount this problem , but the current loading capability of this circuit is unfavorable and the driving clocks must have four - phase non - overlapped " signals 针对这个问题,四相位的电荷泵电路由此产生,但是这个电路的电流负载能力不太好并且它的驱动时钟信号必须是四相位且不重叠。
In the regulations kinds , charge pump converters use capacitors to store and transfer energy and can work well for step up without the need for an inductor . therefore , applications that need low or medium power are making charge pump more and more attractive 其中,电荷泵电路采用电荷转移方式工作,在不需要电感元件情况下可实现一定升压,因此这类电源管理芯片在中低功率的应用中倍受欢迎。
For saving driver ics ' power consumption and cost , this research proposes a novel display pixel design with integrated charge pump circuits . the proposed display pixel design can supply driving voltage more than double the input voltage to display pixels . there are two advantages for this developed novel pixel design . first , the power consumption of the panels with the proposed novel pixels can be reduced due to the lower voltage on data lines . second , the high voltage driver ics are not necessary , such that the cost and power consumption of the corresponding driving systems can be diminished . from the simulation results , the pixel voltage indeed could raise to more than double input voltage by this proposed design . in addition , the pixels with charge pump circuits also retrench about half power consumption than the conventional display pixels 为了节省面板电路驱动芯片的功率损耗以及制作成本,本研究提出一种新的像素电路设计,而在设计中将会融合电荷泵电路.利用这种电路设计的像素可有效地将像素电极上的驱动电压提高到输入电压的2 3倍以上.此像素电路设计具有两个优势:第一,可以有效降低显示面板的像素功率损耗;第二,不需高电压的面板电路驱动芯片,因此可节省芯片的成本及功率损耗.由模拟结果可知,像素电极上的驱动电压确实可由此像素电路设计而提高到输入电压的2 3倍以上;而像素的功率损耗也可有效地降低,约为传统像素的1 / 2
The charge pump automatically switches between 1x / 1 . 5x modes based on the input voltage , to maintain correct output levels at a high power efficiency . the led driver regulates the current of leds to a value configured by the outside control signal . the four led output channels are current matched for consistent led brightness 电荷泵电路的功能是根据输入电压自动选择1 . 5x或者1x电荷泵工作模式并输出相应电压信号,有较高的功率转换效率;电流控制电路的功能是实现几个并联led通道的电流匹配并根据外加输入信号控制led电流的大小。