电路及电子电路中相位关系的研讨——兼对PAL制解码器原理电路中三个90°相移电路的分析

Discussion on Phash Relation and Electric and Electronic Circuit:Analyzing to the Three Circuits with 90° Phase Shifting in the Principle Circuit of PAL Decoder

本文从最基本的电路及电子电路概念出发,由浅入深地阐述了电路及电子电路中相位的分析方法。就电子电路而言,诸如放大、振荡、移相、反馈等,所涉及的除幅度问题外,难以处理的也常是相位问题。文中以 PAL 制解码器原理电路中三个90°相移电路为典型,作了简要地分析。

From the basic conception of electric and electronic circuit,proceed from easy to difficult,this paper expounds the method how to analyze the phase. For example,in electronic circuit,such as amplification,oscillation phase shift,feedback and ect.,the question often difficult to cope with except amplitude,is the phase.The paper gives a brief analysis to an example of three 90°phase shiftiong in the principle circuit of PAL decoder.