PCB Technical - Printed circuit board copper treatment experience

Cover the copper material, and calculate the space where the military commander PCB Supreme has discarded as a reference surface, and fill it with semi-fluid brass afterwards. These copper areas are called copper filling. The effect of PCB coating with brass is to reduce the ball resistance, improve the anti-interference ability, reduce the voltage drop, improve the resource utilization rate, and intervene in the power line to reduce the area around the city. If the PCB earth can be compared with multiple types, such as SGND, AGND, GND, etc., how to protect the brass PCB factory is to cover the difference between workers and peasants using the extremely important earth as a rule reference according to the second position of the PCB counter. The copper material, the number ball and the simulated earth are separated and the copper material is not much to say. Synchronously enter the shielding copper material in advance, bold the corresponding power source connection: V50V, V36V, V33VSD card oil supply, etc. Generally speaking, it promotes the formation of a co-frequency structure with multiple appearances.

There are several things that need to be dealt with to mask the brass: the single element is a single-point connection between the two earths, and the dual element is the copper coating before and after the crystal oscillator. The crystal oscillator in the magnetic circuit is the source of the single element. Afterwards, the case of the crystal oscillator was grounded separately. The three are municipalities directly under the Central Government of the archipelago, so if you think it is very big, it won't cost a lot of money to stick to the concept and add it in.

In addition, the ideal of broadly shielding copper materials is actually from the grid to shield the brass and the white wall to be flawless, which is on par. Why is it that the broad-faced brass of the cloth, if the wave soldering is faulty, the board ratio may be uplifted, or even blistering. Secondly, since this point, the heat dissipation properties of the grid have to be vast. In general, it is a multi-purpose grid with repeated internal circuit pair anti-interference requirements. The broadcast section pipeline has a large-scale grid-connected power generation network generation integrated copper paving.

Supplementary time:

The middleman in the digital circuit is different from the equivalent circuit middleman with MCU. The integrated circuit with the working frequency of the precursor is like the above. The function of applying brass is to reduce the impedance of the slam earth. The more flesh-and-blood processing method PCB factory operates like this: each main brain module is the first station of the change period allowed by the digital circuit to be filled with brass, and then it is reiterated to use the wire coil to connect the copper materials. It is to reduce the reaction inside the magnetic circuit at all levels.

The digital circuit simulates the mixed circuit of the magnetic circuit, the independent routing of the live wire, and the summary to the end of the dirty source filter capacitor. Extremely stars: the distribution of the transmission lines on the back of the analog loop, so you can’t just lay it thinly into a piece of copper and rely on the body. For the analog channel back, it pays attention to the reflection of each other at all times, and the simulation of the earth requires a single-point grounding. Whether the simulated ball can be bundled and coated into a copper skin can be processed according to facts. This snuggle requires an understanding of the somewhat outrageous nature of the analog IC used.