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Newb question about tube socket placement

rayma

Member
2011-04-29 8:37 pm
Can a tube socket be flipped to the opposite side of its normal PCB installation side and still work the same?

That makes it a mirror image, so the pins are wrong. 1 -> 9, 2 -> 8, 3 -> 7, etc.
The tube pin connections are not symmetric. You'd have to change all the pcb trace
connections (except #5) to correct that.

Instead, you could mount all the capacitors on the bottom. Then the tops of the sockets
could be even with the top plate.
 
Last edited:

fredjones

Member
2013-05-02 9:08 pm
I do not have the actual Tetra PCB yet. I guess if you can solder both sides, then just place the tube socket on top, and put all large components on the bottom.

Why didn't I think of this before. Duh! And why did none of the 148 persons who viewed this thread suggest this?
 
Last edited:

rayma

Member
2011-04-29 8:37 pm
I do not have the actual Tetra PCB yet. I guess if you can solder both sides, then just place the tube socket on top, and put all large components on the bottom. Why didn't I think of this before. Duh! And why did none of the 148 persons who viewed this thread suggest this?

It takes some actual hardware and construction experience.

Can a tube socket be flipped to the opposite side of its normal PCB installation side and still work the same?

That makes it a mirror image, so the pins are wrong. 1 -> 9, 2 -> 8, 3 -> 7, etc.
The tube pin connections are not symmetric. You'd have to change all the pcb trace
connections (except #5) to correct that. Instead, you could mount all the capacitors on the bottom.
Then the tops of the sockets could be even with the top plate.
 
Mount the tube sockets to the "top" side of the boards and all the other components to the "bottom". The tetra boards are laid out to make this very easy. Components can be mounted to either side and labeled on each side. The boards from Glass-Ware (Tubecad) are of very high quality and well laid out. Instructions are well written as well.