Printed Circuit Board Cloning can help end user to re-manufacture obselete electronic PCB card after extract schematic diagram, layout drawing, gerber file and BOM list from physical PCB board;
Printed Circuit Board Cloning can help end user to re-manufacture obselete electronic PCB card after extract schematic diagram, layout drawing, gerber file and BOM list from physical PCB board
In fact, the printed circuit board (PCB) is made of electrical linear materials, that is, its impedance should be constant, so, why does PCB introduce non-linearity into the signal? The answer is: relative to the place where the current flows, the PCB layout design is “spatially nonlinear”. Whether the amplifier draws current from this power supply or another power supply depends on the instantaneous polarity of the signal on the load.
The current flows from the power supply, passes through the bypass capacitor, and enters the load through the amplifier. Then, the current returns from the load ground (or the shield of the PCB output connector) to the ground plane, passes through the bypass capacitor, and returns to the power source that originally provided the current.
The concept of current flowing through the path of least impedance is incorrect, the amount of current in all the different impedance paths is proportional to its conductivity. In a ground plane, there is often more than one low-impedance path through which a large proportion of the ground current flows: one path is directly connected to the bypass capacitor; the other is to stimulate the input resistance before reaching the bypass capacitor.
