PCB Design
Why bother about the PCB ?
A PCB is a very complex part and should be treated as one of the
components in the design, it can make or brake a design. Below I
will try to give some guidance on how to route the PCB.
The task of the PCB
The PCB has two main electrical tasks:
- To provide connectivity
- To route the currents in a desired way
Ground tree
Powering scheme - power amplifiers
Powering scheme - low level
circuitry
General considerations
If you are into etching and such, DO NOT tin plate the whole
surface of the copper foil after etching, the solderability will
be much reduced. After etching, keep the photoresist on the board
until you are ready to start mounting the components on the
board. With an absolute oxide free copper surface the
solderability is a dream. Do not underestimate this point
because high-end gear are produced under well controled
conditions to give the best possible result. Believe me,
you could probably turn an Audio Research to crap by just poor
solderings.
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