Basic characteristics and main uses of the circuit diagram - Database & Sql Blog Articles

Single chip microcomputer STM32L151CCU6

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1. Circuit diagram: Arranged by graphic symbols and in order of work, detailing the connection relationship of all the basic components of the circuit, equipment or complete set, regardless of the actual position of the schematic.
2, the legend


This circuit diagram illustrates the circuit configuration and operating principle of the power supply, control and interlocking of the compressor, M1 and fan motor M2. This picture has the following characteristics:
(1) According to the power supply and function divided into two parts: the main circuit is drawn according to the flow of energy (ie current), indicating the power supply relationship between the electric energy through the fuse and the contactor to the motor; the auxiliary circuit is drawn according to the action sequence, ie the functional relationship.
(2) The main circuit adopts vertical arrangement, and the auxiliary circuit adopts horizontal arrangement.
(3) The attached table gives the components and related technical parameters.
4. Use of this diagram (1) for detailed expression and understanding of the working principle of the design object (circuit, device or device), analysis and calculation of circuit characteristics.
(2) As the basis for preparing the wiring diagram.
(3) Provide information for testing and finding faults.