论文部分内容阅读
PT2124C是电风扇专用控制集成电路,其主要功能特点是:(1)具有强、中、弱三档风速和一组独立辅助输出;(2)具有四小时4段式不累进电子定时功能;(3)采用32768Hz晶振作时基,频率稳定;(4)所有开关均采用轻触方式。PT2124C的多项功能都适合于音响控制电路。本文介绍的多功能音响控制电路具有音源选择、四小时4段定时、双路交流电源开关控制等功能。
PT2124C is a fan-specific control integrated circuit, its main features are: (1) has a strong, medium and weak third gear speed and a set of independent auxiliary output; (2) has four hours 4-stage non-progressive electronic timing function; 3) using 32768Hz crystal as a time base, frequency stability; (4) all switches are used touch mode. The PT2124C’s many features are suitable for audio control circuit. This article describes the multi-function audio control circuit with a sound source selection, four-hour four-band timer, dual AC power switch control and other functions.