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HL788P/TS微电脑答录机是广陵电子有限公司的新产品,电原理如图1所示。其主要特点是:a.可储存10个电话号码;b.密码遥控各种操作功能;c.监听及省钱装置;d.家人留言及会谈录音功能;e.设置雷电感应过压保护功能。整机具有较高的集成度,话机的发号采用UM91260芯片、通话采用TEA1062芯片、振铃采用HA31002P芯片、微电脑答录机的微处理采用DMC80C49—105A芯片、言处理采用HA12189NT芯片、密码遥控采用TC5305P芯片、电机驱动采用M5485L芯片、监听功放采用LM386D芯片等。该机的话机电路比较简单,且许多报刊杂志已介绍过类似电路,故在此不再赘述。本文重点介绍有代表性的微电脑
HL788P / TS microcomputer answering machine is a new product of Guangling Electronics Co., Ltd., the power principle shown in Figure 1. Its main features are: a. Can store 10 phone numbers; b. Password remote control of various operating functions; c. Monitor and save money device; d. Family members leave a message and talks recording; e lightning lightning protection set overvoltage protection. The machine has a high degree of integration, the phone number using UM91260 chip, call using TEA1062 chip, ringing using HA31002P chip, micro-computer answering machine using DMC80C49-105A micro-chip processing, using HA12189NT chip processing, password remote control TC5305P chip, motor drive using M5485L chip, monitor amplifier using LM386D chip. The machine’s telephone circuit is relatively simple, and many newspapers and magazines have introduced a similar circuit, it will not repeat them here. This article focuses on the representative microcomputer