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词汇 Astable multivibrator
分类 英语词汇 英语翻译词典
释义

Astable multivibrator

英语例句库

The examples of analyzing monostable multivibrator and astable multivibrator and Schmitt trigger based on 555 Timer by the method are also introduced.

文中给出了使用该方法分析由555定时器组成的单稳态触发器、多谐振荡器和施密特触发器等实例.

中文百科

复振器 Multivibrator

(重定向自Astable multivibrator)
基本动态交互式三极管双稳态复振器(R1, R2 = 1 kΩ, R3, R4 = 10 kΩ).
图1:基本的BJT非稳态复振器

复振器是一种用来产生在两种状态间变化的系统的电子电路,譬如说振荡器、定时器、触发器等等。最常见的形式是用来产生方波的非稳态振荡器。

复振器大致上可以分成3种:

最简单的复振器是由两个交互偶合的晶体管构成的,并在电路中使用不同的RC电路以决定处于不同状态的时间。

复振器常见于需要产生方波或定宽时脉的系统中,不过简单的电路也意味着不够精确的时脉控制,因此在时间因素非常重要的系统中较少见到复振器。

555计时器是一种广泛使用的集成电路版本的复振器。555计时器中使用了更精密的设计以解决一般复振器定时不准的问题。

英语百科

Multivibrator 复振器

(重定向自Astable multivibrator)
Original vacuum tube Abraham-Bloch multivibrator circuit, from their 1919 paper
A vacuum tube Abraham-Bloch multivibrator oscillator, France, 1920 (small box, left). Its harmonics are being used to calibrate a wavemeter (center).
Figure 1: Basic BJT astable multivibrator
Figure 2: Basic BJT monostable multivibrator

A multivibrator is an electronic circuit used to implement a variety of simple multi-state systems such as oscillators, timers and flip-flops. It is characterized by two amplifying devices (transistors, electron tubes or other devices) cross-coupled by resistors or capacitors. The name "multivibrator" was initially applied to the free-running oscillator version of the circuit because its output waveform was rich in harmonics.

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