On Tue, 14 Jan 2003, Kyrre Aalerud wrote:

*>> > But, U would need to use a different polarity photoresist so u only need
*>> to
*>> > expose the tracks to be kept and not all copper to be removed or it
*>> would
*>> > take forever...
*>> Even better, design the board with as much copper filled as possible.
*>> This will also reduce etch time a little and save on etchant.
*>
*>And increase the capacitance of the tracks ?  No thanks.
*>I make mostly digital boards and capacitance isn't my friend...

So standardise on transmission line tracks *using* the extra capacitance
from the surrounding ground plane left by the thin etch.

Peter

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