Clipped triangular wave generation circuit

Abstract

The invention discloses a clipped triangular wave generation circuit, which comprises a waveform generation circuit and a translation circuit, wherein the waveform generation circuit is used for generating triangular waves with adjustable frequency and amplitude; the translation circuit translates waveforms output by the waveform generation circuit, and translation amplitude is adjustable; the waveforms output by the translation circuit are inverted, and the parts, which are more than zero, of the waveforms are clipped to obtain clipped triangular waves; and the translation circuit regulates dead time by regulating the translation amplitude. By the clipped triangular wave generation circuit with a simple and ingenious circuit structure design, the triangular waves are generated and converted into the required clipped triangular waves, and the frequency, amplitude and dead time of the clipped triangular waves can be correspondingly accurately controlled by regulating resistance values of three variable resistors; the clipped triangular wave generation circuit has the advantages of simple structure and a small number of components and parts; and simultaneously, a parameter control method is simple, and is hardly influenced by temperature drift.

Description

technical field [0001] The present invention relates to a waveform generation circuit, in particular to a clipped triangular wave generation circuit. Background technique [0002] In some signal processing devices, the front end of the system needs to generate a special clipped triangular wave. figure 1 As shown, and there are high precision requirements for the frequency, amplitude and dead time of this triangular wave, the traditional triangular wave generator has many mature design schemes, and the clipping triangular wave is generally used after the triangular wave generating circuit A diode or a comparator performs clipping, and the clipping point is pulled down to zero through a subtraction circuit. This method has a complex structure and is easily affected by temperature drift, so it cannot accurately control the clipping point to zero. Contents of the invention [0003] The object of the present invention is to provide a clipping triangular wave generating circuit...

AI Technical Summary

Problems solved by technology

[0002] In some signal processing devices, the front end of the system needs to generate a special clipping triangular wave, the clipping point is at zero, and the length of clipping is called dead time , its waveform is shown in attached Figure 1, and, There are high precision requirements for the frequency, amplitude and dead time of this triangular wave. There are many mature design schemes for traditional triangular wave generators, and the generation of clipping triangular waves is generally carried out with diodes or comparators after the triangular wave generating circuit. Limiting, the clipping point is pulled down to zero position through the subtraction circuit. This method has a complicated structure and is easily affected by temperature drift, so it cannot accurately control the clipping point at zero position.

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