Mail Archives: geda-user/2016/08/01/11:54:46
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Dear Members, I need to design a RF board with some Wilkinson splitters o=
n it. While the symbol of splitter is ready (rf/splitter-1.sym) and for pcb=
we have even a java generator github.com (https://github.com/erichVK5/W )=
, I'm not sure how to use it. The splitter is just a few fancy tracks o=
n pcb (plus a resistor) that in fact are all connected. In schematics howev=
er this is an element with 3 pins. In pcb I can not name the splitter pins =
"1", "2", "3", because this will give warnings abou=
t shorted nets. If I change schematics symbol (short its pins) there will b=
e no warnings but all RF nets are reduced to one - that is not the case (al=
l splitter input/output connections are lost). Is there a better/preferre=
d way to deal with such RF components in gEDA? Thanks in advance, Michael=
Widlok
Dnia 1 maja 2016 00:06 michalwd1979 (michalwd1979 AT o2 DOT pl) =
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> napisa=C5=82(a):
Hello, Long time ago I remember playing around with a patch that added t=
hermals to SMD pads. There were a few issues with it, however during normal=
work I figured out that in fact the most usable (maybe not only for me) th=
ermals for pads are "solid" - the same as setting clearance to 0. P=
roblem with just setting clearance to 0 is when You want to change clearanc=
e to a part of board (by selecting objects and doing :changeclearsize(selec=
ted, xx, mm/mil)) is that this breaks Yours connected pads also. Stripped =
version for this patch that supports only "solid" thermals for pads=
is just a few lines of code (just tested it pcb opengl version). My quest=
ion: Do You think that adding it to mainline might be a good idea? If You w=
ant to use it OK, if not it does not breaks anything. Best Regards, Mic=
hael Widlok=0D
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<div>Dear Members,<br></div><div><br></div><div>I need to des=
ign a RF board with some Wilkinson splitters on it. While the symbol of spl=
itter is ready (rf/splitter-1.sym) and for pcb we have even a java generato=
r <a href=3D"https://github.com/erichVK5/WilkinsonPowerDividerFootprintGene=
rator">(https://github.com/erichVK5/WilkinsonPowerDividerFootprintGenerator=
</a>), I'm not sure how to use it. The splitter is just a few fancy tracks =
on pcb (plus a resistor) that in fact are all connected. In schematics howe=
ver this is an element with 3 pins. In pcb I can not name the splitter pins=
"1", "2", "3", because this will give warnings about shorted nets. If I ch=
ange schematics symbol (short its pins) there will be no warnings but all R=
F nets are reduced to one - that is not the case (all splitter input/output=
connections are lost).<br></div><div><br></div><div>Is there a better/pref=
erred way to deal with such RF components in gEDA?<br></div><div>Thanks in =
advance,<br></div><div>Michael Widlok<br></div>
<br>
<div class=3D"nh_extra">
<p>
Dnia 1 maja 2016 00:06 michalwd1979 (michalwd1979 AT o2 DOT pl) =
[via geda-user AT delorie DOT com] <geda-user AT delorie DOT com> napisa=C5=82(a):
</p>
<blockquote class=3D"nh_quote" style=3D"border-left: 2px so=
lid #999; padding-left: 8px; margin: 0;">
<div id=3D"gwp2feb0698"><div id=3D"gwp2feb0698h"><div cla=
ss=3D"gwp2feb0698b" data-message-body=3D"true"><div id=3D"gwp2feb0698_msg">
<div id=3D"gwp2feb0698_msg-body">
<div id=3D"gwp2feb0698_msg">
<div id=3D"gwp2feb0698_msg-body">Hello,<br/><br/>Long time ago I remember p=
laying around with a patch that added thermals to SMD pads. There were a fe=
w issues with it, however during normal work I figured out that in fact the=
most usable (maybe not only for me) thermals for pads are "solid" =
- the same as setting clearance to 0. Problem with just setting clearance t=
o 0 is when You want to change clearance to a part of board (by selecting o=
bjects and doing :changeclearsize(selected, xx, mm/mil)) is that this break=
s Yours connected pads also.<br/>Stripped version for this patch that suppo=
rts only "solid" thermals for pads is just a few lines of code (jus=
t tested it pcb opengl version).<br/>My question: Do You think that adding =
it to mainline might be a good idea? If You want to use it OK, if not it do=
es not breaks anything. <br/><br/>Best Regards,<br/>Michael Widlok<br/><br/=
></div>
</div>
</div>
</div>
</div></div></div>
</blockquote>
</div>
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