查询词典 Ac

First of all, the circuit output waveform in the case of losing it by measuring the input voltage and output voltage in order to detect amplification of analog circuits, and then by adjusting the frequency of AC voltage source to reduce the output gain make 3db analog circuits in order to measure the maximum cut-off frequency, pass band can be obtained.

本电路首先在输出波形不失真的情况下通过测量输入电压和输出电压从而测出模拟电路的放大倍数，然后通过调节交流电压源的频率使得输出增益减少3db从而测量出模拟电路的上限截止频率，即可求出通频带。

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。

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。

Therefore, it is very practical to develop high quality ac voltage regulator.

因此发展高品质的交流电压调整器是非常有实用性的。

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。

To use the AC voltage stabilizer, UPS should be received in the first class

10若要使用交流稳压器，应接在 UPS 的前级

The company's full-automatic AC voltage stabilizer has the power, precision purification, purification parameters Series.

公司的交流稳压电源有全自动、精密净化、参数净化等系列。

A new AC voltage stabilizer with over voltage and under voltage protection was designed.

针对目前国内外稳压器现状及存在的问题，设计出一种采用先进电子元件、具有过压和欠压保护功能新型交流稳压器。

Volatile voltage, an exchange of purification or UPS, a single AC voltage stabilizer can be

扰特大、或是电压动荡不定，有条件的用户配交流净化电源或UPS，无条件的用户配一台交流稳压器）。

LCD line package type AC voltage stabilizer, showing input-output parameters such as voltage and current!

详细说明：液晶显示线包式交流稳压器，显示输出输入电压和电流等参数！

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。