VOLTAGE COMPARATOR MAKES A DUTY-CYCLE MODULATOR.

被引：0

作者：

Stearns, Howard F.

机构：

来源：

EDN | 1975年 / 20卷 / 11期

关键词：

D O I：

暂无

中图分类号：

TN7 [基本电子电路];

学科分类号：

080902 ;

摘要：

A complete duty-cycle modulator, including the triangle wave generator, can be fabricated with a quad comparator. The remaining two comparators can be used for preamplification and signal inversion in driving a class D amplifier. This circuit oscillates by virtue of positive feedback to the noninverting input. The comparator output switches at the midpoints of the slopes, and generates a symmetrical square wave. By varying the switching points (or levels), the modulating signal produces the duty-cycle modulated wave.

引用

页码：76 / 77