查询词典 astable multivibrator

Four self-exciting multivibrator circuits constituted with single 74121 are proposed.

集成单稳态触发器74121是脉冲电路中广泛应用的中规模集成器件。

The circuit simulation and the analysis are made for a gate circuit one shot multivibrator.

现在 ，EDA软件很多，较广泛使用的 EDA软件有PSPICE、 ORCAD、 PCAD、 WORKVIEW、PADS等 [1，2 ] 。

The system designed to break the traditional model, First of all, the measurement of the resistivity of components using parameters R consisting of 555 timer Multivibrator transformed into a frequency signal f, Then after counting SCM operations of the resistance R calculated, the final delivery of digital display circuit, the implementation of intelligent measurement.

该系统打破传统的设计模式，首先把要测量的电阻元件的参数R利用555定时器构成的多谐振荡器转换成频率信号f，然后用单片机计数后再运算求出R的阻值，最后送数码显示电路，实现了智能化测量。

Transmitter is composed of 555 core multivibrator, by changing the oscillator frequency to adjust the frequency of infrared emitter, and can adjust the resistance to reduce the infrared signal duty cycle to increase as much as possible infrared the scope of protection.

详细说明：发射电路是以555为核心组成多谐振荡器，通过改变振荡器的工作频率来调节红外发射器件的工作频率，且可以通过调节电阻来减小红外信号的占空比，从而尽可能地增加红外防护的范围。

File ? Save As 在 Save As 对话框键入 Multivibrator simulation.

保存准仿真电路为与原原理图不同的文件名，选择

As shown in Figure 12, adding a second resistor, RB, to the circuit of Figure 9 and connecting the trigger he threshold input causes the timer to self-trigger and run as a multivibrator.

象图12所表示的，给图9的电路增加第二个电阻RB，使其连接触发器，用阀值引起定时器自触发，使其象一个多频震荡器一样。

It consists of many ele- mentary pulse networks such as: Transistor forming and shaping circuit,trrnsistor blocking oscillator,multivibrator,time delay circuit and "and" gate,etc.

本文专门讨论了利用脉冲选择的晶体管化同步分频系统的线路综合原理和研制技术问题，对组成系统的各种单元脉冲电路，如晶体管窄脉冲形成器，晶体管间歇振荡器，晶体管多谐振荡器，晶体管延迟电路以及晶体管门电路等均作了较深入的分析，并给出相应的实验结果。

EDA ; simulation ; one shot multivibrator ; gate circuit

仿真电路包括数字电路、模拟电路及数模混合电路。

SINGLE SHOT MULTIVIBRATOR, An electrical circuit

输人信号触发电路时产生的脉冲的电路。

Summary This paper analyzes the working principle and stability of a transistor mul- tivibrator operating as a frequency divider,with both sides being synchronized by the input signal.It is found that the frequency division stability of this circuit can further be increased when the multivibrator operates in the second class of oscillating condition,and that the optimum operating point is best determined from the actual base voltage changing characteristic.

本文分析了晶体管自激多谐振荡器用作双侧同步分频电路的一般理论和分频稳定性，并考虑基极电压变化规律来确定最佳分频的工作状态和运用点，同时对同步脉冲的引入问题亦作了原理性补充，还提出了振荡于第二类状态下的自激多谐振荡器可获得高稳定性的分频，以及此类双侧同步分频电路的设计方法。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。