查询词典 DC

HMC1022 magnetoresistive sensor based on a weak magnetic field test system, in the intensity of magnetic induction into a small amount of DC voltage, the voltage level by the amplification for the amount of voltage into digital with TLC2543 volume, and then through the single-chip AT89S52 data processing, carried out using two-way LCD1602 display.

基于磁阻传感器HMC1022的弱磁场测试系统，在将磁感应强度转化为微小的直流电压量以后，经放大为伏特级的电压量用TLC2543转化为数字量，再通过单片机AT89S52进行数据的处理，用LCD1602进行双路的显示。

At first, the DC and AC characteristics of the HBT were studied theoretically. Then a voltage comparator was designed.

首先，分析了HBT的基本工作原理；然后比较详细地分析了ECL电压比较器的工作原理并进行了设计。

It has a base internal circuit, resulting in a period of 20ms, the base width of 1.5ms signal, will be the DC bias voltage and the voltage comparator potentiometer to obtain the output voltage difference.

它内部有一个基准电路，产生周期为20ms，宽度为1.5ms的基准信号，将获得的直流偏置电压与电位器的电压比较，获得电压差输出。

The programme through the transformer transformer, through the rectifier circuit filter circuit which will be AC into DC, and the adoption of the regulation by regulators more stable voltage, input voltage regulator when it can only be fixed when the voltage difference within the scope of regulation of the output voltage, and therefore out of voltage difference in the scope of automatic Diaodang, it is through the two comparator output voltage and the reference voltage comparison, and through the counter counting function control relay controller The input to determine the size of the output voltage at which the scope, and then automatically Diaodang.

该方案是通过变压器变压，再经过整流电路、滤波电路进而将交流电变为直流电，在通过稳压器的稳压得到较稳定的电压，由于稳压器当输入电压固定时只能在它的电压差范围内调节输出电压，、所以要在调出电压差的范围时自动调档，这是通过两个比较器将输出电压和基准电压进行比较，再通过计数器的计数功能控制继电器控制器的输入情况来判断输出电压的大小在哪个范围，然后进行自动调档。

DC voltage divider can be used to design lower voltage direct current power.

直流分压器集开关电源和电能变换于一身，可以被用来设计降压型直流电源。

And also a method of adding an Equivalent DC Voltage Source in the output side of non-isolation converters which can extend the step-up voltage gain is proposed in this thesis.

介绍了耦合电感在不隔离型变换器中的物理意义，采用一种在输出侧增加等效电压源的方法，拓展了不隔离型变换器的升压增益。

The simulation results show that the amplifier of improved control circuit not only solve the question of output DC offset,but also keep the voltage gain lowered by voltage compensation technique.

仿真结果表明，改进控制电路后的系统不但解决了输出直流偏置问题，而且解决了电压补偿方法所造成的放大器增益下降问题。

With the development of electronic technology, the use of single-chip microcomputer-controlled voltage regulator dc power supply has greatly improved performance.

随着电子技术的发展，利用单片机控制的直流稳压电源性能有很大的改观。

The Company specializes in many years, AC-DC voltage regulator technology development and production of speed, experience and strong technical force.

本公司专业从事多年的交直流调压调速技术的开发生产，经验丰富、技术力量强。

However, this kind of traditional dc voltage stabilizer, good control, simple, low reliability and low accuracy of interference, high volume and complexity of the power electronic devices.

然而这种传统的直流稳压电源功能简单，不好控制、可靠性低、干扰大、精度低且体积大、复杂度高。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。