The pcb layout
The component print
The picture shows the component print of the PCB. Of course you can't use it for anything except for an overview. Please download the pdf-file instead if you want to see the details.
The printed circuit board is made for two channels, contains everything, power supply and the amp itself, including transformers except for input and output connectors. I have chosen not to have pcb mounted headphone and phono connectors because it's hard to fit in a case.
The pcb have groundplane on the lower (solder) side (not shown in pictures) which is essential in order to get good results.
The solder side
The picture shows the solder side of the PCB. Of course you can't use it for anything except for an overview. Please download the pdf-file instead if you want to see the details.
Almost everyone of the traces are on the solder side. The groundplane is very covering, only a few traces on the solder side.
The component side
The picture shows the component side of the PCB. Of course you can't use it for anything except for an overview. Please download the pdf-file instead if you want to see the details.
Almost everyone of the traces are on the component side as you can see. The groundplane is on the solder side.
The groundplane mask
The picture shows the groundplane mask of the PCB. Of course you can't use it for anything except for an overview. Please download the pdf-file instead if you want to see the details.
The black area is without groundplane and this is under the transformers.
The hot relief pads
The picture shows the pads which are connected to groundplane of the PCB. Of course you can't use it for anything except for an overview. Please download the pdf-file instead if you want to see the details.
Each "cross" at the pads is a ground connection. This file is used together with the solder side in a sandwich. I use this technique because my cad program has a very slow groundplane generation.