11 Sep
2012
11 Sep
'12
8:26 p.m.
Generally, the tip off is power and ground planes vs. bigger traces on the back or front.
Are decoupling caps connected to vias or to power lines?
Or, especially on older stuff, there will be a layer "key" on a board edge.
-Ryan
On Sep 11, 2012, at 2:29 PM, Chris Tofu wrote:
are you supposed to be able to tell just by looking at
them if they have multiple layers? Assuming you have one w/multiple layers, and I guess I
already know the answer, it's a huge headache to try and draw up schematics (or
duplicate the artwork rather) w/only photographs of the top and bottom of the board?
You'd need knowledge of the ic's, which isn't that huge a deal perhaps, being
I'm questioning this w/regard to very standard ic's and glue.
I want my APC back. I need to create copies of the cpu and disk controller cards. I
don't have ready access to these. Each of these boards is nearly the size of a IBM
5150 mobo, so would it make sense that they are anything but single layer boards? And the
APC had 2 video boards, each w/it's own pd7220.
I got to find that yogi guy.