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Old 1st August 2009, 05:49 PM   #1
Electrons are yellow and more is better!
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Default Tube socket for ECC88, drawing

This is the very first tube thread for me

I'm searching without success for mechanical drawings for tube sockets for ECC88. Is there a standard for tube sockets or can the pin placement for the socket vary?
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Old 1st August 2009, 06:06 PM   #2
SY is offline SY  United States
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The socket placement is, of course, standard. But there are LOTS of difference mechanical configurations.Typically, one buys sockets and measures them, then does the PCB.
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Old 2nd August 2009, 06:09 AM   #3
Electrons are yellow and more is better!
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So the socket pins don't always are directly under the pins on the tube?
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Old 2nd August 2009, 06:50 AM   #4
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No, they are a little bit spread out. The only exception I know of are the teflon UX4 sockets. These are not, strictly speaking, actually made for PCBs, but they can be made to work.

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Pete Millett has an eagle library on his website with good tube stuff. So does Tubelab. If you want to know what not to do, look at the tube libraries that come with Eagle.
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Old 2nd August 2009, 07:02 AM   #5
Electrons are yellow and more is better!
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I'll think I'll start with this socket
http://svalander.se/shoppen/tubesockets.htm RH4

BTW: Have you seen my and Mr. Ruschkowski's high-end adapters ?
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Old 10th August 2009, 10:53 AM   #6
Electrons are yellow and more is better!
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I bought the RH21 socket from Mr. Svalander. It was quite easy to make a footprint

Just wondering, the tubes are shown in "bottom view", right? I have followed the internal wires in the tube and think I'm right here. The tube is E88CC from TAD. This is my very first tube project ever, this "tube buffered gainclone", my take. Rhys' project got me inspired.
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Old 10th August 2009, 12:02 PM   #7
Arnulf is offline Arnulf  Europe
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Yes, the datasheets show tube from the bottom. In case of ECC88 it is easy to orient by following heater wires (pins 4 & 5).
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Old 10th August 2009, 01:59 PM   #8
Zibi is offline Zibi  Poland
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http://www.tubeampdoctor.com/index.php?cPath=36_92
Click a socket picture for a drawing.
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