75. -48V to -48V signal is only the return flow, there is no convergence to other places? If you can not, please explain the reason in the remarks column.
1. The information received is completed (including: schematics, *.brd, bill of materials, PCB design and change requirements, standardization requirements, process design documents)
PCB wiring requirements to avoid one of the cases is the right-angle alignment. In principle, right-angle alignment changes the line width of the transmission line, resulting in discontinuities in impedance. In fact, not only the right-angle alignment, angle, acute angle alignment may cause impedance changes.
LED switching power supply research and development speed in recent years has been a significant technological leap. As the last design link, PCB design is also very important, because once there is a problem in this part, it is likely to cause more electromagnetic interference to the entire LED switching power supply system, for the power supply stability and security Will also have an adverse effect. So, PCB design how to do it is correct?
Rx:the resistance, a lot of resistance in the circuit diagram, according to theserial number, R1, R2...