二、室内无绳电话机的各部分电路特点通过对上期无绳电话机电路组成及工作原理的熟悉,对无绳电话有了初步了解。下面笔者在此基础上,从以下4部分重点分析一下无绳电话电路特点,并提供相关主要元器件型号。1.有线部分无绳电话的有线部分主要由保护电路、继电器电路、差接耦合电路、手柄 Second, the various parts of the indoor cordless telephone circuit features through the last period of the composition of cordless telephone circuit and working principle of familiarity, have a preliminary understanding of cordless phones. Below the author on this basis, from the following four key analysis of the characteristics of cordless phone circuits, and provide the main components of the relevant models. 1. Wired part of the wired part of the cordless phone mainly by the protection circuit, the relay circuit, differential coupling circuit, the handle