How to draw the circuit?

1, direction of signal processing flow of circuit diagram.

2. Connect the wires.

3. Methods and steps to read the circuit diagram of power cord and ground wire.

Composition:

The circuit diagram mainly consists of four parts: component symbols, connections, nodes and comments. Symbols of elements represent elements in the actual circuit, and their shapes are not necessarily similar to the actual elements, or even completely different. But it generally shows the characteristics of components, and the number of pins is consistent with the actual components.

Connecting wires represent the conductors in the actual circuit. Although it is a line in the schematic diagram, it is often not a line but a copper foil block of various shapes in the commonly used printed circuit board, just like many connections in the radio schematic diagram are not necessarily straight lines in the printed circuit board diagram, but can also be a copper film of a certain shape.

Nodes represent the connection relationship between several component pins or several wires. All component pins and wires connected to nodes, regardless of the number, are conductive. Notes are very important in the circuit diagram, and all the words in the circuit diagram can be classified as notes. If you look at the picture above carefully, you will find that there are notes in each part of the circuit diagram to explain the model and name of the components.