The pictures and precautions about the whole circuit diagram are as follows: 1 The analysis of the whole circuit diagram is mainly: the specific position of each part of the unit circuit in the whole circuit diagram; the type of unit circuit; the analysis of DC working voltage supply circuit; the analysis of AC signal transmission; the analysis of the working principle of some unit circuits These unit circuits are relatively complicated before. 2 For the whole circuit diagram divided into several drawings, the drawings can be made one by one. If the analysis of the whole signal transmission system is needed, the drawings should be connected for analysis. 3After learning the circuit diagram of the whole machine, after learning a functional unit circuit, find the unit circuit of this function in several complete circuit diagrams separately, and analyze it, because the unit circuit in the whole circuit diagram There are many changes, and the drawing of the circuit is affected by other circuits and is not necessarily the same as the single drawn unit circuit, so the difficulty of drawing is increased. 4 In general, the direction of signal transmission is from the left to the right of the whole circuit diagram. 5 The DC working voltage supply circuit's drawing direction is from right to left, and the DC circuit identification direction of a certain level of amplifying circuit is from top to bottom. 6 In the process of analyzing the whole circuit, if there is difficulty in analyzing a certain unit circuit, for example, it is difficult to analyze the application circuit of a certain type of integrated circuit, you can find the identification data of this type of integrated circuit (internal circuit block diagram, each lead) Foot action, etc.) to help map. 7 There are many English labels in some of the whole circuit diagrams. It is quite advantageous to understand the meaning of these English labels. The English description marked near a certain type of integrated circuit is a functional description of the integrated circuit. Dc Gear Motor,Dc Motor 24V,220V Gear Motor,Permanent Magnet Dc Motor NingBo BeiLun HengFeng Electromotor Manufacture Co.,Ltd. , https://www.hengfengmotor.com