Three-terminal regulated power supply circuit and PCB board design example - circuit CAD design software using technology

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

MOS power IC full range

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM

1.5PF SOT23-6 Low Capacitance 5V Breakdown Voltage 6V SRV05

description:

Through the production of a commonly used three-terminal regulated power supply PCB board, the basic process of circuit board production will be introduced to achieve the following learning objectives:

Master the method of changing the PCB component lead package.
Master the method of planning a board using the wizard.
Master the method of pin packing and network loading.
Master the method of component layout.
Understand the meaning of the main wiring rules. Master the setting method of the main wiring rules and the operation method of automatic wiring.

Drawing a schematic

Determine the appropriate component package

Determining that the component package is completed during the schematic drawing process is critical to the fabrication of the PCB. The PCB components loaded in the PCB are formed by calling out the package according to the pin package determined in the schematic diagram. Therefore, the schematic components, the connection relationship of the schematic components, the PCB lead package, and the PCB board copper. Foil traces are one-to-one correspondence, but the expression and focus of the two are different. The schematic diagram uses "schematic symbols" and clear lines to express the working principle and signal processing of the circuit. The focus is on the expression circuit. The structure and function are convenient for circuit explanation and analysis. The PCB board realizes the specific functions of the schematic through the "pin package" and the actual copper foil wire, focusing on the component mounting, soldering, debugging, etc., so when it is gradually transferred from the schematic drawing to the PCB board design, the schematic must be Based on this, the joint schematic takes into account the layout and routing of the PCB components.

Three-terminal regulated power supply automatic wiring result

Three-terminal regulated power supply circuit and PCB board design 3D perspective

The above is part of the three-terminal regulated power supply circuit and PCB board design, the detailed tutorial content can be found in the PDF document!