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The design of schematic diagram is the basis of circuit design. Only on the basis of designing schematic diagram can the circuit simulation of printed circuit board be carried out. The following briefly introduces the design steps of circuit schematic drawing by new scholars of Protel DXP2004SP2. It contains the following nine specific design steps: […]

Why should test points be added to circuit board design? Circuit board design plus test points are not needed in PCB production, but ICT test after PCBA is completed, which is to test whether there is any problem in circuit board welding and whether the performance meets the requirements. In the production of PCB, the […]

The design of single-sided PCB requires a lot of professional data and some physical knowledge, which can be said to be a comprehensive skill project. If you want to make a high-quality PCB, you need not only a solid foundation, but also sensitivity to impedance. The impedance involved in PCB mainly includes the following aspects: […]

The first and fourth layer PCB design drawing program: 1. Draw a circuit diagram and make a netlist. Among them, the process of drawing schematic diagram involves drawing elements and packaging, so it is no problem to master these two kinds of schematic diagrams. The elimination of errors and warnings can solve general problems. You […]

If some preventive measures are not taken in pcb design, interference, data loss and poor signal integrity may occur. We will outline many rules and guidelines to consider when choosing Bluetooth technology for a given application, more specifically, designing it into the circuit board. A variety of applications use Bluetooth, including: Beacons used in shopping […]

1. Passive crystal-Passive crystal needs the oscillator on the DSP chip, and the connection method is suggested on the datasheet. Passive crystal has no voltage problem, and the signal level is variable, that is to say, it is determined according to the starting circuit. The same crystal can be applied to various voltages and DSPs […]

1.PCBA production efficiency When you want a large PCB circuit board, many factories may not be able to do it because of its particularity. Therefore, it is necessary to know whether the supplier can produce and what is the production efficiency? When the PCB is larger than the industry standard and the supplier has no […]

The design of radio frequency (RF)PCB has many uncertainties in the published theory, which is often described as a “black art”. Usually, for circuits in the frequency band below microwave (including low-frequency and low-frequency digital circuits), careful planning on the premise of mastering all kinds of design principles is the guarantee of successful design at […]

Generally, the design current of PCB will not exceed 10A or even 5A. Especially in household and consumer electronics, the continuous working current on PCB usually does not exceed 2A. Recently, however, the company’s products should be designed with a power line, and the continuous current can reach about 80A. Considering the instantaneous current and […]

A good PCB layout design can optimize the efficiency, slow down the thermal stress, and minimize the noise and interaction between traces and components. All this comes from the designer’s understanding of the current conduction path and signal flow in the power supply. When a prototype power panel is powered on for the first time, […]