Electronic PCB Card Reproducing Output Load

Electronic pcb card reproducing output load return circuit and output wave filtering device must follow the below principles according to the circuit function unit, and only when layout the all of components for the whole electronic pcb card:

1, first of all need to consider the size and dimension of electronic pcb card, when its dimension is oversize with long tracks, increasing impedance, the ability to anti-noise drop when reproducing electronic pcb card, all of these will directly lead to the increasing of cost no matter for design, layout or manufacturing and assembly; and the thermal dissipation will be affected by the small size of electronic pcb card and more likely to be interfered by the adjacent tracks. The best solution for the shape from electronic pcb card reproducing is rectangle, with length and width ratio is 3:2 or 4:3, and for those components which are all located on the edge of electronic pcb card should have at least 2mm distance to them;

2, the placement of components shouldn’t be too cramped to be soldered on the electronic pcb card;

3, choose a core part as the center of each functional circuit, and reproducing electronic pcb card will be proceed cycle it. Since the components need to be evenly and compact arrange the electronic pcb card in order, reduce and shorten the leads and connections when electronic pcb card reproducing as much as possible, decoupling capacitors must close to the VCC.

4, for those circuits working in the high frequency, electronic pcb card reproducing must consider the dissipated parameter among the components. Universal circuit should do the utmost to make the components layout in a parallel format. Through which can not only have a better cosmetic performance, but also easy to solder and execute the mass production.

5, according to the circuit flowchart to arrange the location of each functional circuit unit, and makes the layout from electronic pcb card reproducing become easier for signal transmission and communication, and makes the signal flow into the same direction.

6, the first and most important principle for electronic pcb card reproducing and layout is the first yield rate, pay attention to the flying tracks connection when move the components, and put all of the components with track connection in the concentrated area;

7, decrease the loop area as much as possible in the process of PCB Reverse Engineering to restrain the radiation interference on the switch power supply.