查询词典 square wave

One can choose the output sine wave square wave triangle wave signal generator, but with graphical input method.

详细说明：一个可以选择输出正弦波三角波方波的信号发生器，不过是用图形输入法。

Often divided into two types:(1) sine wave oscillator, according to the network oscillation frequency of the different loop selected further divided into RC sinusoidal oscillator, LC sinusoidal oscillators, quartz crystal oscillators, voltage-controlled oscillator, voltage-controlled crystal oscillator and other forms;(2) non-sinusoidal oscillation device, also known as relaxation oscillator, is the use of capacitor charging and discharging and active device (transistor, FET, single-junction transistor, etc.) to generate the pulse-off square wave, rectangular wave, triangle wave, sawtooth wave, or these basic waveforms synthetic waveform and its frequency by the LC time constant charge and discharge circuits to decide.

常分两大类型：（1）正弦波振荡器，根据振荡环路中选频网络的不同，又分为RC正弦波振荡器、LC正弦波振荡器、石英晶体振荡器、压控振荡器、压控石英晶体振荡器等多种形式；（2）非正弦波振荡器，又称张弛振荡器，是利用电容充放电及有源器件（晶体管、场效应管、单结晶体管等）的通断来产生脉冲方波、矩形波、三角波、锯齿波或这些基本波形的合成波形，其工作频率由LC充放电电路的时间常数来决定。

In the square wave current welding,the inductance is very important to influence the fomation of square wave A.

在方波交流焊中，电抗器的电感量对方波的形成及电弧的稳定性有着很大的影响。

We know, PC is a digital system, the internal high-frequency characteristics of signal waveforms for the square wave, and square wave contains a large number of harmonics.

我们知道，PC是一个数字系统，内部高频信号的特征波形为方波，而方波含有大量的谐波。

The square wave or corrected sine wave auto inverters have many limitations. When supplying to inductive load (such as electric fan, electric drill etc.), a square wave or corrected sine wave auto inverter produces too much harmonic current which makes the load seriously heated and even damaged. When supplying to capacitive load or rectificative load such as notebook PC, mobile phone charger etc.

方波或修正正弦波电源有很多局限性：在为感性负载供电时产生大量谐波电流，导致电器严重发热，甚至损坏；为容性或整流性负载（笔记本电脑、手机充电器等）供电时产生严重的脉冲电流，严重时可能导致电器损坏。

This work's characteristic is may several kind of basic profiles which outputs us through the pressed key choice to want to obtain: Square-wave, sine wave, triangular wave and saw-tooth wave.

本作品的特点就是可以通过按键选择输出我们想要得到的几种基本波形：方波、正弦波、三角波和锯齿波。

My graduation project core task is to design: 89S52 as the core, unifies DAC0808 to realize the programmed control to have the sine wave, the triangular wave, the square-wave and the saw-tooth wave four kind of commonly used low-frequency signals .

我的毕业设计核心任务是：以89S52为核心，结合DAC0808实现程序控制产生正弦波、三角波、方波和锯齿波四种常用低频信号。

Can have many kinds of profiles, like the triangular wave, the saw-tooth wave, the rectangular wave (including square-wave), the sine wave electric circuit are called the function signal generating device.

能够产生多种波形，如三角波、锯齿波、矩形波、正弦波的电路被称为函数信号发生器。

In the paper,using three methods,including C language,Matlab and DSP Builder,producing the arbitrary waveform initialization data of the sine wave,the triangular wave,the saw-tooth wave and the square-wave.Programming,parameter setting and waveform simulation are described to every method detailedly.

DDS系统一般包括系统时钟、频率预置与调节电路、相位累加器、ROM查找表，输出的数据通过外接的D/A转换器和滤波器完成波形输出。

In addition, the Chinese CRT TV screen points of light, depending on the magnetic field changes in the tilt, So with the need to control the current ramp, triangle wave, This is the same square wave can not ignore the role of function generator is generally automatically generate square wave, sine wave, saw tooth wave and triangular wave, etc. ladder circuit voltage waveform or equipment.

此外，如在电视机中显像管荧光屏上的光点，是靠磁场变化进行偏转的，所以需要要用锯齿波电流来控制，对于三角波，方波同样有这不可忽视的作用而函数发生器是指一般能自动产生方波、正弦波、三角波以及锯齿波阶梯波等电压波形的电路或仪器。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。