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12v battery charger pcb 94vo printed circuit board

  • 12v battery charger pcb 94vo printed circuit board
  • 12v battery charger pcb 94vo printed circuit board
  • 12v battery charger pcb 94vo printed circuit board

12v battery charger pcb 94vo printed circuit board

    Unit Price: 32 USD
    Min. Order: 1 Piece/Pieces
    Packaging: Vacuum packing

Basic Info

Model No.: Pcba Assembly and Part

Product Description

Why copper is used in PCB?

1. Reasons for PCB production:
1. EMC, for large-area ground or power supply copper, will play a shielding role, some special grounds, such as PGND play a protective role.
2. PCB process requirements, generally in order to ensure the effect of electroplating, or lamination is not deformed, copper is laid on the PCB layer with less wiring.
3. The signal integrity is required to provide a complete return path for the digital signal of the High frequency board and reduce the wiring of the DC network. Of course, there are also reasons such as heat dissipation, special device installation requires copper and so on.
2. The benefits of copper paving:
The biggest advantage of copper paving is to reduce the ground wire impedance (a large part of the so-called anti-interference is also caused by the reduction of ground wire impedance). There are a lot of spike currents in the Characteristic impedance PCB digital circuit, so it is more necessary to reduce the ground wire impedance. It is generally believed that a large area of ground should be laid for circuits composed of digital devices, while for analog circuits, the ground loop formed by laying copper will cause electromagnetic coupling interference to outweigh the gain (except for the High frequency board). Therefore, it is not that all circuits require ordinary copper (BTW: the performance of mesh copper paving is better than that of a whole block)
3. The significance of copper paving lies in:
1. Pave the copper and connect with the ground wire, so as to reduce the loop area
2. A large area of copper is equivalent to reducing the resistance of the ground wire and reducing the voltage drop. The digital ground and the analog ground should also be separated to lay the copper when the frequency is high, and then connected with a single point. The single point can be connected with a wire around a magnetic ring several times. However, if the frequency is not too high, or the working conditions of the instrument are not bad, it can be relatively relaxed. The crystal oscillator can be regarded as a high-frequency emission source in the circuit. You can spread copper around and ground the shell of the crystal oscillator, which will be better.
Fourth, the difference between the whole piece of copper and the grid:
To analyze specifically, there are about 3 functions:
1. Beautiful;
2. Suppress noise;

3. In order to reduce high-frequency interference (on High frequency board H), according to the wiring guidelines: the power supply and the ground layer should be as wide as possible, why do you need to add a grid? Isn't it inconsistent with the principle? From a high frequency point of view, it is even more wrong. The most taboo in the High frequency board wiring is the sharp traces. There are many problems with n 90 degrees in the power layer. In fact, why do it like that is entirely the requirement of the craft: see if the hand-soldered type is painted like that, almost none; if you see such a painting, there must be Surface-Mount (SMT) &BGA Assembly on it. At that time, because there was a process called Wave Solder for PCBA when mounting, he had to heat the PCB locally. If the copper is fully covered, the above specific heat coefficient is different, the board will be up and the board will be up, and then the problem will come. Under our current corrosion process: if the film is easy to stick to the PCB, in the subsequent strong acid project, that spot may not be corroded, and there are a lot of waste products! From this perspective, do you know why you have to paint like that? Of course, some surface mounts are not gridded. From the point of view of product consistency, there may be two situations: a. His corrosion process is very good; b. Instead of Wave Solder for PCBA, it is adopted. A more advanced reflow welding, but in this case, the investment of the entire assembly line will be 3-5 times higher.

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HAODA ELECTRONIC CO.,LIMITED

 HAODA ELECTRONIC CO.,LIMITED specializes in high-speed turn-key PCB services:PCB design, PCB Fabrication, PCBA and Components Sourcing, we provide services for about 4000 customers around the world. HAODA ELECTRONIC CO.,LIMITED is a local factory focused on the "multiple species, short delivery time, rapid prototype" PCB manufacturers in Shenzhen . Company Had accumulated plenty of advantages over the years in PCB prototype, PCB mass production , with the help of many years of experience in the PCB industry and technology precipitation, the company reputation continues to improve, product quality has been recognized by different type customers all over the world...

We can serve you:

  • 0-18Layer FR4 board:

1 layer LED Based Night Lamp
4 Layer Power line Circuits
6 Layer Laser Circuits
8 Layer Button Motor Controller Circuits
12 Layer Touch Activated Switch Circuits

  • Quick Turn PCB:

12 hours for 2 layer PCB
24 hours for 4 layer PCB
48 hours for 6layer PCB


  • High Frequency Board

Roger 4003 printed board
Roger 4350 printed board
ceramics base copper-clad laminates
mulit-wiring printed board
industrial control PCB

HDI PCB
BVH(buried/blind via hole)PCB
Ro4350B+FR4 hybrid Board
Flame resistant PCB
Metal Core PCB (MCPCB)
  • Rigid-Flex Board

6 layer Rigid-flex Immersion Gold PCB
BVH(buried/blind via hole)PCB
Characteristic impedance CPB
Flame resistant PCB
Metal Core PCB (MCPCB)

  • Aluminum Base Board

Aluminum 2.0W LED board
Aluminum 3.0W LED board
communication PCB
Aluminum base board
Aluminum LED board

  • PCB Assembly Products

Through-Hole Assembly
Turkey PCB Assembly
PCBA Manufacturing
Surface-Mount (SMT) &BGA Assembly
Box Build Assembly
Mixed Assembly

  • PCBA Components Sourcing

Parting Sourcing
Electronic Components
Electronic connectors
Cable Connectors I/O Connectors
originality electronics IC
Electronic Resistor and Capacitor




Company Info

  • Company Name: HAODA ELECTRONIC CO.,LIMITED
  • Representative: Gansu QingYang
  • Product/Service: PCB , PCBA , PCB assembly , Quick Turn PCB , High frequency board , Rigid-Flex Board
  • Capital (Million US $): 1000,000RMB
  • Year Established: 2015
  • Total Annual Sales Volume (Million US $): US$50 Million - US$100 Million
  • Export Percentage: 91% - 100%
  • Total Annual Purchase Volume (Million US $): Below US$1 Million
  • No. of Production Lines: 21
  • No. of R&D Staff: 11 -20 People
  • No. of QC Staff: 51 -60 People
  • OEM Services Provided: yes
  • Factory Size (Sq.meters): 50,000-100,000 square meters
  • Factory Location: Building 2, Gangbei Industrial Zone, Huangtian, Hangcheng Street, Baoan District, Shenzhen
  • Contact Person: Mr. Gan QingYang
  • Tel: +86-0755-23720053
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