Home
JAQForum Ver 24.01
Log In or Join  
Active Topics
Local Time 02:09 22 Nov 2024 Privacy Policy
Jump to

Notice. New forum software under development. It's going to miss a few functions and look a bit ugly for a while, but I'm working on it full time now as the old forum was too unstable. Couple days, all good. If you notice any issues, please contact me.

Forum Index : PCB Manufacturing : Diptrace Help

Author Message
OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 924
Posted: 05:02am 25 Jan 2018
Copy link to clipboard 
Print this post

I have a double sided PCB in Diptrace and I am trying to link the ground pads of the 3T regs to the copper fill on the bottom of the PCB with vias for thermal purposes. Every time I try to achieve this I get errors in the DRC. Can anyone help with the right procedure to accomplish this?
OA47
 
Solar Mike
Guru

Joined: 08/02/2015
Location: New Zealand
Posts: 1138
Posted: 10:51am 25 Jan 2018
Copy link to clipboard 
Print this post

I use Diptrace quite a lot, cannot say I have seen this issue; are the Gnd pads on the same net as the copper fill other side of pcb?

Cheers
Mike
 
OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 924
Posted: 11:22pm 25 Jan 2018
Copy link to clipboard 
Print this post

  Quote  I use Diptrace quite a lot, cannot say I have seen this issue; are the Gnd pads on the same net as the copper fill other side of pcb?


Thanks for the Reply Mike. The copper pour was not connected to a net. I didn't have a selection of a ground net but the pads for the ground on the 3T regs was net 0 so I attached the pour to net 0 and all is happy.
OA47
 
OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 924
Posted: 11:43pm 25 Jan 2018
Copy link to clipboard 
Print this post

On further inspection this looses my bottom tracks so back to the drawing board.



 
Tinker

Guru

Joined: 07/11/2007
Location: Australia
Posts: 1904
Posted: 11:36am 26 Jan 2018
Copy link to clipboard 
Print this post

Just curious, OA47 reminds me of a germanium diode of yesteryear. Your avatar shows one too. Can you still buy germanium diodes?Edited by Tinker 2018-01-27
Klaus
 
Warpspeed
Guru

Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 12:53am 27 Jan 2018
Copy link to clipboard 
Print this post

Yes, still available, the 1N34 is one example.
They are still useful for some obscure things where you might want zero forward threshold voltage, but at extremely low current.

A crystal set radio, or an RF voltage measurement probe for example.
Cheers,  Tony.
 
OA47

Guru

Joined: 11/04/2012
Location: Australia
Posts: 924
Posted: 01:28am 27 Jan 2018
Copy link to clipboard 
Print this post

  Quote  Just curious, OA47 reminds me of a germanium diode of yesteryear. Your avatar shows one too. Can you still buy germanium diodes?


I chose OA47 for my avatar as AFAIR that would have been the first semiconductor I would have purchased for a project (Crystal Set)
 
Warpspeed
Guru

Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 12:32am 27 Feb 2018
Copy link to clipboard 
Print this post

That certainly brings back distant memories.......
Cheers,  Tony.
 
Print this page


To reply to this topic, you need to log in.

© JAQ Software 2024