Multi-path adjustable self-excited multivibrator

A multivibrator, self-excited oscillation technology, applied in power oscillators, electrical components and other directions, can solve the problems of simple circuit, low operating frequency of RC oscillator, large frequency variation range, etc., and achieves stable and reliable circuit and low production cost. Low cost, simple circuit effect

Active Publication Date: 2012-08-15
武汉东湖新技术开发区生产力促进中心
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  • Abstract
  • Description
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Problems solved by technology

However, the traditional LC oscillator circuit, quartz crystal oscillator circuit and RC oscillator circuit have some defects. For example, the operating frequency of the RC oscillator is low, and the frequency stability is not high, but the circuit is simple and the frequency range is large, often in the low frequency band. middle application

Method used

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  • Multi-path adjustable self-excited multivibrator
  • Multi-path adjustable self-excited multivibrator

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Embodiment Construction

[0007] A multi-channel adjustable self-excited multivibrator, the multi-channel adjustable self-excited multivibrator includes two self-excited oscillation circuits 1, 3 and a multi-channel band switch circuit 2; wherein the self-excited oscillation circuits 1, 3 are Alternate charging and discharging process, the circuit is symmetrical, but the parameters of the components cannot be completely consistent, so the state of the two triodes changes at the moment of power-on. This change is more and more intense due to the positive feedback, resulting in a temporary Steady state. During the temporary steady state, another triode is turned on or off after being gradually charged by the capacitor, and the state is reversed to reach another temporary steady state. This cycle forms an oscillation. This process controls the conduction and connection of the transistors Q1, Q2, Q3, and Q4. Cut-off, Q5, Q6 conduction and cut-off states are determined by the working state of transistors Q1,...

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Abstract

The invention discloses a multi-path adjustable self-excited multivibrator. Under the condition that an external trigger signal does not exist, the multivibrator can continuously, periodically and automatically generate rectangular pulses and can be set according to different required frequencies, different width ratios and the number of controllable paths. The type of circuit can be widely applied in various living fields. The circuit is a symmetric multi-path adjustable self-excited multivibrator consisting of a triode, a capacitor and a waveband switch serving as a core element. The circuit does not have a stable state; switch on and switch off of the triode are controlled by charging and discharging of the capacitor; and the circuit automatically excites between two transient states.

Description

technical field [0001] The invention relates to a multi-channel adjustable self-excited multivibrator, which is mainly used for self-excited temporary steady-state regulation and control of electronic switches. Background technique [0002] Oscillating circuits are generally composed of resistors, inductors, capacitors and other components and electronic devices. The LC circuit formed by connecting the inductance coil L and the capacitor C is the simplest oscillating circuit, and its natural frequency is f=[sx(]1[]2πlc. But the traditional LC oscillating circuit, quartz crystal oscillating circuit and RC Oscillating circuits and other types have some defects such as RC oscillators have low operating frequency and low frequency stability, but the circuit is simple and the frequency range is large, and it is often used in low frequency bands. And the traditional oscillating circuit consists of two-stage inverting amplifiers , capacitive resistance coupled and connected to for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/32
Inventor 杨忠浩
Owner 武汉东湖新技术开发区生产力促进中心
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