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目前，市场上的室内无绳电话机主要分为单信通和多信道两种，在电路组成上，多信道无绳电话机相对于单信道无绳电话机来说，主要采用了微处理器与锁相频率合成技术，其他电路基本相同。一、单信道无绳电话机的组成及简单工作原理1．座机电路组成及工作原理图1所示为单信道无绳
Currently, the market of indoor cordless phones are mainly divided into single-channel and multi-channel two kinds of circuit components, multi-channel cordless phones relative to single-channel cordless phones, the main use of the microprocessor and phase-locked Frequency synthesis technology, other circuits are basically the same. First, the composition of single-channel cordless phones and simple working principle 1. Landline circuit composition and working principle Figure 1 shows a single channel cordless