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Old 10th February 2012, 08:53 PM   #1
NZkeith is offline NZkeith  New Zealand
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Default CAD for Tube circuits

Greetings Folks.... Firstly ...." diyAudio ", what a great forum and always somebody out there willing to share and help
My questiion:- I am still very much ' A Tube Virgin ', although being over 60 already. I have a few circuits that work really well and would like to 'draught' them in a CAD program. I have found quite a few FREEWARE packages, BUT very few with the basic tube amplifier components, diodes, triodes, pentodes, resistors and different caps etc., ALL in one place. I have tried 'TinyCAD', but struggle to find an EASY WAY to create say a 'diode' within the package, as there are only 3 valves 'supplied'.
As this is only a hobby, one does not want to go out and spend $100's on something that you might use only a few times.
I would really appreciate ANY input and help......
Very best wishes and thanks in anticipation.....
Keith, ....... Christchurch, New Zealand
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Old 10th February 2012, 09:01 PM   #2
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There are packages for ExpressSCH/ExpressPCB with tubes. And it's free!

If you have Visio, there's tubes in the library as well.
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Old 10th February 2012, 09:13 PM   #3
NZkeith is offline NZkeith  New Zealand
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Thanks a stack Stuart, .... See there, point proven !!!!!.... Within a few moments help was at hand..... Much appreciated...
Keep well and best wishes....
Cheers....
Keith
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Old 10th February 2012, 09:22 PM   #4
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Originally Posted by SY View Post
There are packages for ExpressSCH/ExpressPCB with tubes. And it's free!

If you have Visio, there's tubes in the library as well.
SY I just tried a new download from ExpressPCB and still don't have tubes! Is this someplace else or did you roll your own custom symbols?

ES
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Old 10th February 2012, 09:28 PM   #5
SY is offline SY  United States
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No, I got the tube package off another site (years ago, can't remember which, but Google is your friend). I think there's a Yahoo group for ExpressPCB where there are also libraries.
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Old 10th February 2012, 09:29 PM   #6
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Originally Posted by SY View Post
No, I got the tube package off another site (years ago, can't remember which, but Google is your friend). I think there's a Yahoo group for ExpressPCB where there are also libraries.
That makes sense. I just drew my own. I also had to redraw some of the transistors because on some pin 1 is the collector and on others it is not!
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Old 10th February 2012, 09:41 PM   #7
NZkeith is offline NZkeith  New Zealand
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Hello there Simon, thanks for your input.... YES... You are correct.... ExpressPCB does not seem to have ANY tubes, yet it does look like a great package. Just wondering if anyone has or knows of any 'tube/valve' add-ons for ExPCB ????

Thanks again.... looks like quite a good thread has been started, could well be a common problem....

Cheers, be assured, all inputs well appreciated...

Keith
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Old 10th February 2012, 09:53 PM   #8
SY is offline SY  United States
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Here's one, the Yahoo group has quite a few more.

Adding custom components to ExpressSch - Hoffman Ampifiers Guitar Tube amp forum
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Old 10th February 2012, 09:54 PM   #9
NZkeith is offline NZkeith  New Zealand
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Hi there too ALL.... I have just done a bit of a GOOGLE search and THERE ARE some add-ons for ExpressPCB..... Actually found a link to a thread in diyAudio !!!!!!! There does not appear to be any tube/valves, but the various sockets and MANY components are there. Kindly posted by member " Ivey " of diyAudio....

Thanks for that...

Keith
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Old 10th February 2012, 10:02 PM   #10
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Most CAD packages allow designing of your own components.
This is often better than relying on someone elses attempt.
You can make pads the size you want.
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