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Square wave and sawtooth wave generation circuit based on memristor

A technology for generating circuits and memristors, used in pulse generation, electrical components, pulse train generators, etc., can solve problems such as affecting the accuracy and stability of circuits, low stability of mechanical potentiometers, and difficulty in automatic control.

Inactive Publication Date: 2015-04-29
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the stability of the mechanical potentiometer is not high, and it is not easy to realize automatic control, while the resistance value of the digital potentiometer is a discrete value, and the adjustment range is narrow, which greatly affects the accuracy and accuracy of the square wave and sawtooth wave generating circuits. stability

Method used

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  • Square wave and sawtooth wave generation circuit based on memristor
  • Square wave and sawtooth wave generation circuit based on memristor
  • Square wave and sawtooth wave generation circuit based on memristor

Examples

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Embodiment

[0035] A memristor-based square wave and sawtooth wave generation circuit. The circuit as figure 1 As shown, by the non-inverting input hysteresis comparator module (1), the integration circuit (7) with adjustable charge and discharge time constant, the first variable gain amplifier module (14), the second variable gain amplifier module (13) and the control Module (12) is formed. Control module (12), non-inverting input hysteresis comparator module (1), integration circuit (7) with adjustable charge and discharge time constant, first variable gain amplifier module (14) and second variable gain amplifier module (13) Connect separately.

[0036] The non-inverting input hysteresis comparator module (1) is composed of a first memristor circuit (2), a comparator (3) and a first resistor (4). Terminal M of the first memristor circuit (2) 11 and terminal R of the first resistor (4) 11 Respectively with the input terminal V of the comparator (3) 1+ Connection, terminal M of the ...

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Abstract

The invention specifically relates to a square wave and sawtooth wave generation circuit based on a memristor. The invention has the technical scheme that the square wave and sawtooth wave generation circuit consists of an in-phase input hysteresis comparator (1), an integral circuit (7) with an adjustable charging and discharging time constant, a first variable gain amplification module (14), a second variable gain amplification module (13) and a control module (12), wherein the control module (12) is respectively connected with the in-phase input hysteresis comparator (1), the integral circuit (7) with the adjustable charging and discharging time constant, the first variable gain amplification module (14) and the second variable gain amplification module (13). The square wave and sawtooth wave generation circuit based on the memristor has the advantages of simple structure, high precision, good stability and easiness in realizing automatic control.

Description

technical field [0001] The invention belongs to the technical field of non-sinusoidal signal generating circuits. Specifically, it relates to a memristor-based square wave and sawtooth wave generating circuit. Background technique [0002] Some electronic systems, especially the signals required by digital systems, such as square waves, sawtooth waves, etc., can be generated by non-sine wave generating circuits, and have been widely used. [0003] In the traditional square wave and sawtooth wave generation circuits, in order to realize the adjustable output signal amplitude, frequency and duty cycle, the potentiometer is generally used to replace the resistor in the circuit, and the amplitude and frequency are respectively changed by adjusting the resistance of the potentiometer. and duty cycle. At present, the widely used potentiometers mainly include analog mechanical potentiometers and digital potentiometers. Because the stability of the mechanical potentiometer is not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K3/64H03K4/50
Inventor 甘朝晖尹力蔡发君王智
Owner WUHAN UNIV OF SCI & TECH
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